diff options
Diffstat (limited to 'gemfeed')
24 files changed, 1840 insertions, 1840 deletions
diff --git a/gemfeed/2008-06-26-perl-poetry.html b/gemfeed/2008-06-26-perl-poetry.html index 7d1ce809..7b6130aa 100644 --- a/gemfeed/2008-06-26-perl-poetry.html +++ b/gemfeed/2008-06-26-perl-poetry.html @@ -47,44 +47,44 @@ _~~|~/_|_|__/|~~~~~~~ | / ~~~~~ | | ~~~~~~~~ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/perl</font></i> +<pre><i><font color="#ababab">#!/usr/bin/perl</font></i> -<i><font color="#9A1900"># (C) 2006 by Paul C. Buetow</font></i> +<i><font color="#ababab"># (C) 2006 by Paul C. Buetow</font></i> -<b><font color="#0000FF">goto</font></b> library <b><font color="#0000FF">for</font></b> study <font color="#009900">$math</font><font color="#990000">;</font> -BEGIN <font color="#FF0000">{</font> <b><font color="#0000FF">s</font></b><font color="#FF0000">/earching/ books/</font> -<b><font color="#0000FF">and</font></b> <b><font color="#0000FF">read</font></b> <font color="#009900">$them</font><font color="#990000">,</font> <font color="#009900">$at</font><font color="#990000">,</font> <font color="#009900">$the</font> <font color="#FF0000">}</font> library<font color="#990000">:</font> +<b><font color="#ffffff">goto</font></b><font color="#ff0000"> library </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> study </font><font color="#ff0000">$math</font><font color="#F3E651">;</font> +<font color="#ff0000">BEGIN </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">s</font></b><font color="#bb00ff">/earching/ books/</font><font color="#ff0000"> </font> +<b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">read</font></b><font color="#ff0000"> </font><font color="#ff0000">$them</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$at</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$the</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#ff0000"> library</font><font color="#F3E651">:</font> -<b><font color="#0000FF">our</font></b> <font color="#009900">$topics</font><font color="#990000">,</font> <b><font color="#0000FF">cos</font></b> <b><font color="#0000FF">and</font></b> tan<font color="#990000">,</font> -<b><font color="#0000FF">require</font></b> strict<font color="#990000">;</font> <b><font color="#000080">import</font></b> <font color="#FF0000">{</font> of<font color="#990000">,</font> <b><font color="#0000FF">tied</font></b> <font color="#009900">$patience</font> <font color="#FF0000">}</font><font color="#990000">;</font> +<b><font color="#ffffff">our</font></b><font color="#ff0000"> </font><font color="#ff0000">$topics</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">cos</font></b><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> tan</font><font color="#F3E651">,</font><font color="#ff0000"> </font> +<b><font color="#ffffff">require</font></b><font color="#ff0000"> strict</font><font color="#F3E651">;</font><font color="#ff0000"> </font><font color="#ababab">import</font><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> of</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">tied</font></b><font color="#ff0000"> </font><font color="#ff0000">$patience</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">int</font></b><font color="#FF0000">'egrate'</font><font color="#990000">;</font> <b><font color="#0000FF">sub</font></b> trade<font color="#990000">;</font> <font color="#FF0000">}</font><font color="#990000">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">exp</font></b><font color="#FF0000">'onentize'</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">abs</font></b><font color="#FF0000">'olutize'</font> <font color="#FF0000">}</font><font color="#990000">;</font> -study <b><font color="#0000FF">and</font></b> study <b><font color="#0000FF">and</font></b> study <b><font color="#0000FF">and</font></b> study<font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">int</font></b><font color="#bb00ff">'egrate'</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">sub</font></b><font color="#ff0000"> trade</font><font color="#F3E651">;</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">exp</font></b><font color="#bb00ff">'onentize'</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">abs</font></b><font color="#bb00ff">'olutize'</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<font color="#ff0000">study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study</font><font color="#F3E651">;</font> -<b><font color="#0000FF">foreach</font></b> <font color="#009900">$topic</font> <font color="#990000">(</font><font color="#FF0000">{</font>of<font color="#990000">,</font> math<font color="#FF0000">}</font><font color="#990000">)</font> <font color="#FF0000">{</font> -you<font color="#990000">,</font> <b><font color="#0000FF">m</font></b><font color="#FF6600">/ay /</font>go<font color="#990000">,</font> to<font color="#990000">,</font> limits <font color="#FF0000">}</font> +<b><font color="#ffffff">foreach</font></b><font color="#ff0000"> </font><font color="#ff0000">$topic</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#F3E651">{</font><font color="#ff0000">of</font><font color="#F3E651">,</font><font color="#ff0000"> math</font><font color="#F3E651">}</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000">you</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">m</font></b><font color="#ff0000">/ay /</font><font color="#ff0000">go</font><font color="#F3E651">,</font><font color="#ff0000"> to</font><font color="#F3E651">,</font><font color="#ff0000"> limits </font><font color="#F3E651">}</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> not <b><font color="#0000FF">qw</font></b><font color="#FF0000">/erk /</font> <b><font color="#0000FF">unless</font></b> <font color="#009900">$success</font> -<b><font color="#0000FF">and</font></b> <b><font color="#0000FF">m</font></b><font color="#FF6600">/ove /</font>o<font color="#990000">;</font><font color="#009900">$n</font> <b><font color="#0000FF">and</font></b> study <font color="#FF0000">}</font><font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> not </font><b><font color="#ffffff">qw</font></b><font color="#bb00ff">/erk /</font><font color="#ff0000"> </font><b><font color="#ffffff">unless</font></b><font color="#ff0000"> </font><font color="#ff0000">$success</font><font color="#ff0000"> </font> +<b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">m</font></b><font color="#ff0000">/ove /</font><font color="#ff0000">o</font><font color="#F3E651">;</font><font color="#ff0000">$n</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study </font><font color="#F3E651">}</font><font color="#F3E651">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">int</font></b><font color="#FF0000">'egrate'</font><font color="#990000">;</font> <b><font color="#0000FF">sub</font></b> trade<font color="#990000">;</font> <font color="#FF0000">}</font><font color="#990000">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">exp</font></b><font color="#FF0000">'onentize'</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">abs</font></b><font color="#FF0000">'olutize'</font> <font color="#FF0000">}</font><font color="#990000">;</font> -study <b><font color="#0000FF">and</font></b> study <b><font color="#0000FF">and</font></b> study <b><font color="#0000FF">and</font></b> study<font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">int</font></b><font color="#bb00ff">'egrate'</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">sub</font></b><font color="#ff0000"> trade</font><font color="#F3E651">;</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">exp</font></b><font color="#bb00ff">'onentize'</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">abs</font></b><font color="#bb00ff">'olutize'</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<font color="#ff0000">study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study</font><font color="#F3E651">;</font> -<b><font color="#0000FF">grep</font></b> <font color="#FF0000">/all/</font><font color="#990000">,</font> <b><font color="#0000FF">exp</font></b><font color="#FF0000">'onents'</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">cos</font></b><font color="#FF0000">'inuses'</font><font color="#990000">;</font> -<font color="#FF0000">/seek results/</font> <b><font color="#0000FF">for</font></b> <font color="#009900">@all</font><font color="#990000">,</font> <b><font color="#0000FF">log</font></b><font color="#FF0000">'4rithms'</font><font color="#990000">;</font> +<b><font color="#ffffff">grep</font></b><font color="#ff0000"> </font><font color="#bb00ff">/all/</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">exp</font></b><font color="#bb00ff">'onents'</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">cos</font></b><font color="#bb00ff">'inuses'</font><font color="#F3E651">;</font> +<font color="#bb00ff">/seek results/</font><font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> </font><font color="#ff0000">@all</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">log</font></b><font color="#bb00ff">'4rithms'</font><font color="#F3E651">;</font> -<font color="#FF0000">'you'</font> <font color="#990000">=~</font> <b><font color="#0000FF">m</font></b><font color="#FF6600">/ay /</font>go<font color="#990000">,</font> not home -<b><font color="#0000FF">unless</font></b> <b><font color="#0000FF">each</font></b> <font color="#009900">%book</font> ne<i><font color="#9A1900">#ars</font></i> -<font color="#009900">$completion</font><font color="#990000">;</font> +<font color="#bb00ff">'you'</font><font color="#ff0000"> </font><font color="#F3E651">=~</font><font color="#ff0000"> </font><b><font color="#ffffff">m</font></b><font color="#ff0000">/ay /</font><font color="#ff0000">go</font><font color="#F3E651">,</font><font color="#ff0000"> not home </font> +<b><font color="#ffffff">unless</font></b><font color="#ff0000"> </font><b><font color="#ffffff">each</font></b><font color="#ff0000"> </font><font color="#ff0000">%book</font><font color="#ff0000"> ne</font><i><font color="#ababab">#ars</font></i> +<font color="#ff0000">$completion</font><font color="#F3E651">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">int</font></b><font color="#FF0000">'egrate'</font><font color="#990000">;</font> <b><font color="#0000FF">sub</font></b> trade<font color="#990000">;</font> <font color="#FF0000">}</font><font color="#990000">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">exp</font></b><font color="#FF0000">'onentize'</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">abs</font></b><font color="#FF0000">'olutize'</font> <font color="#FF0000">}</font><font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">int</font></b><font color="#bb00ff">'egrate'</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">sub</font></b><font color="#ff0000"> trade</font><font color="#F3E651">;</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">exp</font></b><font color="#bb00ff">'onentize'</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">abs</font></b><font color="#bb00ff">'olutize'</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> -<i><font color="#9A1900">#at</font></i> -home<font color="#990000">:</font> <font color="#FF0000">//ig,'nore', time and sleep $very =~ s/tr/on/</font><b><font color="#0000FF">g</font></b><font color="#990000">;</font> -__END__ +<i><font color="#ababab">#at</font></i> +<font color="#ff0000">home</font><font color="#F3E651">:</font><font color="#ff0000"> </font><font color="#bb00ff">//ig,'nore', time and sleep $very =~ s/tr/on/</font><b><font color="#ffffff">g</font></b><font color="#F3E651">;</font> +<font color="#ff0000">__END__</font> </pre> <br /> @@ -94,47 +94,47 @@ __END__ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/perl</font></i> +<pre><i><font color="#ababab">#!/usr/bin/perl</font></i> -<i><font color="#9A1900"># (C) 2006 by Paul C. Buetow</font></i> +<i><font color="#ababab"># (C) 2006 by Paul C. Buetow</font></i> -Christmas<font color="#990000">:</font><font color="#FF0000">{</font>time<font color="#990000">;</font><i><font color="#9A1900">#!!!</font></i> +<font color="#ff0000">Christmas</font><font color="#F3E651">:</font><font color="#F3E651">{</font><font color="#ff0000">time</font><font color="#F3E651">;</font><i><font color="#ababab">#!!!</font></i> -Children<font color="#990000">:</font> <b><font color="#0000FF">do</font></b> <b><font color="#0000FF">tell</font></b> <font color="#009900">$wishes</font><font color="#990000">;</font> +<font color="#ff0000">Children</font><font color="#F3E651">:</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><b><font color="#ffffff">tell</font></b><font color="#ff0000"> </font><font color="#ff0000">$wishes</font><font color="#F3E651">;</font> -Santa<font color="#990000">:</font> <b><font color="#0000FF">for</font></b> <font color="#009900">$each</font> <font color="#990000">(</font><font color="#009900">@children</font><font color="#990000">)</font> <font color="#FF0000">{</font> -BEGIN <font color="#FF0000">{</font> <b><font color="#0000FF">read</font></b> <font color="#009900">$each</font><font color="#990000">,</font> <font color="#009900">$their</font><font color="#990000">,</font> wishes <b><font color="#0000FF">and</font></b> study them<font color="#990000">;</font> <b><font color="#0000FF">use</font></b> Memoize<i><font color="#9A1900">#ing</font></i> +<font color="#ff0000">Santa</font><font color="#F3E651">:</font><font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> </font><font color="#ff0000">$each</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">@children</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font> +<font color="#ff0000">BEGIN </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">read</font></b><font color="#ff0000"> </font><font color="#ff0000">$each</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$their</font><font color="#F3E651">,</font><font color="#ff0000"> wishes </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study them</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">use</font></b><font color="#ff0000"> Memoize</font><i><font color="#ababab">#ing</font></i> -<font color="#FF0000">}</font> <b><font color="#0000FF">use</font></b> constant gift<font color="#990000">,</font> <font color="#FF0000">'wrapping'</font><font color="#990000">;</font> -<b><font color="#0000FF">package</font></b> Gifts<font color="#990000">;</font> <b><font color="#0000FF">pack</font></b> <font color="#009900">$each</font><font color="#990000">,</font> gift <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">bless</font></b> <font color="#009900">$each</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">goto</font></b> deliver -or <b><font color="#0000FF">do</font></b> <b><font color="#000080">import</font></b> <b><font color="#0000FF">if</font></b> not <b><font color="#0000FF">local</font></b> <font color="#009900">$available</font><font color="#990000">,!!!</font> HO<font color="#990000">,</font> HO<font color="#990000">,</font> HO<font color="#990000">;</font> +<font color="#F3E651">}</font><font color="#ff0000"> </font><b><font color="#ffffff">use</font></b><font color="#ff0000"> constant gift</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">'wrapping'</font><font color="#F3E651">;</font><font color="#ff0000"> </font> +<b><font color="#ffffff">package</font></b><font color="#ff0000"> Gifts</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">pack</font></b><font color="#ff0000"> </font><font color="#ff0000">$each</font><font color="#F3E651">,</font><font color="#ff0000"> gift </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">bless</font></b><font color="#ff0000"> </font><font color="#ff0000">$each</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">goto</font></b><font color="#ff0000"> deliver</font> +<font color="#ff0000">or </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#ababab">import</font><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> not </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">$available</font><font color="#F3E651">,!!!</font><font color="#ff0000"> HO</font><font color="#F3E651">,</font><font color="#ff0000"> HO</font><font color="#F3E651">,</font><font color="#ff0000"> HO</font><font color="#F3E651">;</font> -<b><font color="#0000FF">redo</font></b> Santa<font color="#990000">,</font> <b><font color="#0000FF">pipe</font></b> <font color="#009900">$gifts</font><font color="#990000">,</font> to_childs<font color="#990000">;</font> -<b><font color="#0000FF">redo</font></b> Santa <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">do</font></b> <b><font color="#0000FF">return</font></b> <b><font color="#0000FF">if</font></b> <b><font color="#0000FF">last</font></b> one<font color="#990000">,</font> is<font color="#990000">,</font> delivered<font color="#990000">;</font> +<b><font color="#ffffff">redo</font></b><font color="#ff0000"> Santa</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">pipe</font></b><font color="#ff0000"> </font><font color="#ff0000">$gifts</font><font color="#F3E651">,</font><font color="#ff0000"> to_childs</font><font color="#F3E651">;</font> +<b><font color="#ffffff">redo</font></b><font color="#ff0000"> Santa </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><b><font color="#ffffff">last</font></b><font color="#ff0000"> one</font><font color="#F3E651">,</font><font color="#ff0000"> is</font><font color="#F3E651">,</font><font color="#ff0000"> delivered</font><font color="#F3E651">;</font><font color="#ff0000"> </font> -deliver<font color="#990000">:</font> gift <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">require</font></b> diagnostics <b><font color="#0000FF">if</font></b> <b><font color="#0000FF">our</font></b> <font color="#009900">$gifts</font> <font color="#990000">,</font>not break<font color="#990000">;</font> -<b><font color="#0000FF">do</font></b><font color="#FF0000">{</font> <b><font color="#0000FF">use</font></b> NEXT<font color="#990000">;</font> time<font color="#990000">;</font> <b><font color="#0000FF">tied</font></b> <font color="#009900">$gifts</font><font color="#FF0000">}</font> <b><font color="#0000FF">if</font></b> broken <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">dump</font></b> the<font color="#990000">,</font> broken<font color="#990000">,</font> ones<font color="#990000">;</font> -The_children<font color="#990000">:</font> <b><font color="#0000FF">sleep</font></b> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">wait</font></b> <b><font color="#0000FF">for</font></b> <font color="#990000">(</font><b><font color="#0000FF">each</font></b> <font color="#009900">%gift</font><font color="#990000">)</font> <b><font color="#0000FF">and</font></b> try <font color="#FF0000">{</font> to <font color="#990000">=></font> <b><font color="#0000FF">untie</font></b> <font color="#009900">$gifts</font> <font color="#FF0000">}</font><font color="#990000">;</font> +<font color="#ff0000">deliver</font><font color="#F3E651">:</font><font color="#ff0000"> gift </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">require</font></b><font color="#ff0000"> diagnostics </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><b><font color="#ffffff">our</font></b><font color="#ff0000"> </font><font color="#ff0000">$gifts</font><font color="#ff0000"> </font><font color="#F3E651">,</font><font color="#ff0000">not break</font><font color="#F3E651">;</font> +<b><font color="#ffffff">do</font></b><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">use</font></b><font color="#ff0000"> NEXT</font><font color="#F3E651">;</font><font color="#ff0000"> time</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">tied</font></b><font color="#ff0000"> </font><font color="#ff0000">$gifts</font><font color="#F3E651">}</font><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> broken </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">dump</font></b><font color="#ff0000"> the</font><font color="#F3E651">,</font><font color="#ff0000"> broken</font><font color="#F3E651">,</font><font color="#ff0000"> ones</font><font color="#F3E651">;</font> +<font color="#ff0000">The_children</font><font color="#F3E651">:</font><font color="#ff0000"> </font><b><font color="#ffffff">sleep</font></b><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">wait</font></b><font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#ffffff">each</font></b><font color="#ff0000"> </font><font color="#ff0000">%gift</font><font color="#F3E651">)</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> try </font><font color="#F3E651">{</font><font color="#ff0000"> to </font><font color="#F3E651">=></font><font color="#ff0000"> </font><b><font color="#ffffff">untie</font></b><font color="#ff0000"> </font><font color="#ff0000">$gifts</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> -<b><font color="#0000FF">redo</font></b> Santa<font color="#990000">,</font> <b><font color="#0000FF">pipe</font></b> <font color="#009900">$gifts</font><font color="#990000">,</font> to_childs<font color="#990000">;</font> -<b><font color="#0000FF">redo</font></b> Santa <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">do</font></b> <b><font color="#0000FF">return</font></b> <b><font color="#0000FF">if</font></b> <b><font color="#0000FF">last</font></b> one<font color="#990000">,</font> is<font color="#990000">,</font> delivered<font color="#990000">;</font> +<b><font color="#ffffff">redo</font></b><font color="#ff0000"> Santa</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">pipe</font></b><font color="#ff0000"> </font><font color="#ff0000">$gifts</font><font color="#F3E651">,</font><font color="#ff0000"> to_childs</font><font color="#F3E651">;</font> +<b><font color="#ffffff">redo</font></b><font color="#ff0000"> Santa </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><b><font color="#ffffff">last</font></b><font color="#ff0000"> one</font><font color="#F3E651">,</font><font color="#ff0000"> is</font><font color="#F3E651">,</font><font color="#ff0000"> delivered</font><font color="#F3E651">;</font><font color="#ff0000"> </font> -The_christmas_tree<font color="#990000">:</font> formline <b><font color="#0000FF">s</font></b><font color="#FF0000">/ /childrens/</font><font color="#990000">,</font> <font color="#009900">$gifts</font><font color="#990000">;</font> -<b><font color="#0000FF">alarm</font></b> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">warn</font></b> <b><font color="#0000FF">if</font></b> not <b><font color="#0000FF">exists</font></b> <font color="#009900">$Christmas</font><font color="#FF0000">{</font> tree<font color="#FF0000">}</font><font color="#990000">,</font> <font color="#009900">@t</font><font color="#990000">,</font> <font color="#009900">$ENV</font><font color="#FF0000">{</font>HOME<font color="#FF0000">}</font><font color="#990000">;</font> -<b><font color="#0000FF">write</font></b> <font color="#990000"><<</font>EMail - to the parents to buy a new christmas tree<font color="#990000">!!!!</font><font color="#993399">111</font> - <b><font color="#0000FF">and</font></b> send the -EMail -<font color="#990000">;</font><b><font color="#0000FF">wait</font></b> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">redo</font></b> deliver until <b><font color="#0000FF">defined</font></b> <b><font color="#0000FF">local</font></b> <font color="#009900">$tree</font><font color="#990000">;</font> +<font color="#ff0000">The_christmas_tree</font><font color="#F3E651">:</font><font color="#ff0000"> formline </font><b><font color="#ffffff">s</font></b><font color="#bb00ff">/ /childrens/</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$gifts</font><font color="#F3E651">;</font> +<b><font color="#ffffff">alarm</font></b><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">warn</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> not </font><b><font color="#ffffff">exists</font></b><font color="#ff0000"> </font><font color="#ff0000">$Christmas</font><font color="#F3E651">{</font><font color="#ff0000"> tree</font><font color="#F3E651">}</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">@t</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$ENV</font><font color="#F3E651">{</font><font color="#ff0000">HOME</font><font color="#F3E651">}</font><font color="#F3E651">;</font><font color="#ff0000"> </font> +<b><font color="#ffffff">write</font></b><font color="#ff0000"> </font><font color="#F3E651"><<</font><font color="#ff0000">EMail</font> +<font color="#ff0000"> to the parents to buy a new christmas tree</font><font color="#F3E651">!!!!</font><font color="#bb00ff">111</font> +<font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> send the</font> +<font color="#ff0000">EMail</font> +<font color="#F3E651">;</font><b><font color="#ffffff">wait</font></b><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">redo</font></b><font color="#ff0000"> deliver until </font><b><font color="#ffffff">defined</font></b><font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">$tree</font><font color="#F3E651">;</font> -<b><font color="#0000FF">redo</font></b> Santa<font color="#990000">,</font> <b><font color="#0000FF">pipe</font></b> <font color="#009900">$gifts</font><font color="#990000">,</font> to_childs<font color="#990000">;</font> -<b><font color="#0000FF">redo</font></b> Santa <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">do</font></b> <b><font color="#0000FF">return</font></b> <b><font color="#0000FF">if</font></b> <b><font color="#0000FF">last</font></b> one<font color="#990000">,</font> is<font color="#990000">,</font> delivered <font color="#990000">;</font><font color="#FF0000">}</font> +<b><font color="#ffffff">redo</font></b><font color="#ff0000"> Santa</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">pipe</font></b><font color="#ff0000"> </font><font color="#ff0000">$gifts</font><font color="#F3E651">,</font><font color="#ff0000"> to_childs</font><font color="#F3E651">;</font> +<b><font color="#ffffff">redo</font></b><font color="#ff0000"> Santa </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><b><font color="#ffffff">last</font></b><font color="#ff0000"> one</font><font color="#F3E651">,</font><font color="#ff0000"> is</font><font color="#F3E651">,</font><font color="#ff0000"> delivered </font><font color="#F3E651">;</font><font color="#F3E651">}</font> -END <font color="#FF0000">{}</font> <b><font color="#0000FF">our</font></b> <font color="#009900">$mission</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">do</font></b> <b><font color="#0000FF">sleep</font></b> until <b><font color="#0000FF">next</font></b> Christmas <font color="#990000">;</font><font color="#FF0000">}</font> +<font color="#ff0000">END </font><font color="#F3E651">{}</font><font color="#ff0000"> </font><b><font color="#ffffff">our</font></b><font color="#ff0000"> </font><font color="#ff0000">$mission</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><b><font color="#ffffff">sleep</font></b><font color="#ff0000"> until </font><b><font color="#ffffff">next</font></b><font color="#ff0000"> Christmas </font><font color="#F3E651">;</font><font color="#F3E651">}</font> -__END__ +<font color="#ff0000">__END__</font> -This is perl<font color="#990000">,</font> v5<font color="#990000">.</font><font color="#993399">8.8</font> built <b><font color="#0000FF">for</font></b> i386<font color="#990000">-</font>freebsd<font color="#990000">-</font>64int +<font color="#ff0000">This is perl</font><font color="#F3E651">,</font><font color="#ff0000"> v5</font><font color="#F3E651">.</font><font color="#bb00ff">8.8</font><font color="#ff0000"> built </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i386</font><font color="#F3E651">-</font><font color="#ff0000">freebsd</font><font color="#F3E651">-</font><font color="#ff0000">64int</font> </pre> <br /> <h2 style='display: inline' id='shoppingpl'>shopping.pl</h2><br /> @@ -143,35 +143,35 @@ This is perl<font color="#990000">,</font> v5<font color="#990000">.</font><font by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/perl</font></i> +<pre><i><font color="#ababab">#!/usr/bin/perl</font></i> -<i><font color="#9A1900"># (C) 2007 by Paul C. Buetow</font></i> +<i><font color="#ababab"># (C) 2007 by Paul C. Buetow</font></i> -BEGIN<font color="#FF0000">{}</font> <b><font color="#0000FF">goto</font></b> mall <b><font color="#0000FF">for</font></b> <font color="#009900">$shopping</font><font color="#990000">;</font> +<font color="#ff0000">BEGIN</font><font color="#F3E651">{}</font><font color="#ff0000"> </font><b><font color="#ffffff">goto</font></b><font color="#ff0000"> mall </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> </font><font color="#ff0000">$shopping</font><font color="#F3E651">;</font><font color="#ff0000"> </font> -<b><font color="#0000FF">m</font></b><font color="#FF6600">/y/</font><font color="#990000">;</font> mall<font color="#990000">:</font> <b><font color="#0000FF">seek</font></b><font color="#009900">$s</font><font color="#990000">,</font> cool <b><font color="#000000">products</font></b><font color="#990000">(),</font> <font color="#FF0000">{</font> to <font color="#990000">=></font> <font color="#009900">$sell</font> <font color="#FF0000">}</font><font color="#990000">;</font> -<b><font color="#0000FF">for</font></b> <font color="#009900">$their</font> <font color="#990000">(</font><font color="#009900">@business</font><font color="#990000">)</font> <font color="#FF0000">{</font> to<font color="#990000">:;</font> earn<font color="#990000">:;</font> a<font color="#990000">:;</font> lot<font color="#990000">:;</font> of<font color="#990000">:;</font> money<font color="#990000">:</font> <font color="#FF0000">}</font> +<b><font color="#ffffff">m</font></b><font color="#ff0000">/y/</font><font color="#F3E651">;</font><font color="#ff0000"> mall</font><font color="#F3E651">:</font><font color="#ff0000"> </font><b><font color="#ffffff">seek</font></b><font color="#ff0000">$s</font><font color="#F3E651">,</font><font color="#ff0000"> cool </font><font color="#7bc710">products</font><font color="#F3E651">(),</font><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> to </font><font color="#F3E651">=></font><font color="#ff0000"> </font><font color="#ff0000">$sell</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> </font><font color="#ff0000">$their</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">@business</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> to</font><font color="#F3E651">:;</font><font color="#ff0000"> earn</font><font color="#F3E651">:;</font><font color="#ff0000"> a</font><font color="#F3E651">:;</font><font color="#ff0000"> lot</font><font color="#F3E651">:;</font><font color="#ff0000"> of</font><font color="#F3E651">:;</font><font color="#ff0000"> money</font><font color="#F3E651">:</font><font color="#ff0000"> </font><font color="#F3E651">}</font> -<b><font color="#0000FF">do</font></b> not <b><font color="#0000FF">goto</font></b> home <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">exit</font></b> mall <b><font color="#0000FF">if</font></b> <b><font color="#0000FF">exists</font></b> <font color="#009900">$new</font><font color="#FF0000">{</font>product<font color="#FF0000">}</font><font color="#990000">;</font> -<b><font color="#0000FF">foreach</font></b> <font color="#009900">$of</font> <font color="#990000">(</font><b><font color="#0000FF">q</font></b><font color="#FF0000">(uality rich products)</font><font color="#990000">)</font><font color="#FF0000">{}</font> <b><font color="#0000FF">package</font></b> products<font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> not </font><b><font color="#ffffff">goto</font></b><font color="#ff0000"> home </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">exit</font></b><font color="#ff0000"> mall </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><b><font color="#ffffff">exists</font></b><font color="#ff0000"> </font><font color="#ff0000">$new</font><font color="#F3E651">{</font><font color="#ff0000">product</font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<b><font color="#ffffff">foreach</font></b><font color="#ff0000"> </font><font color="#ff0000">$of</font><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#ffffff">q</font></b><font color="#bb00ff">(uality rich products)</font><font color="#F3E651">)</font><font color="#F3E651">{}</font><font color="#ff0000"> </font><b><font color="#ffffff">package</font></b><font color="#ff0000"> products</font><font color="#F3E651">;</font><font color="#ff0000"> </font> -<b><font color="#0000FF">our</font></b> <font color="#009900">$news</font><font color="#990000">;</font> <b><font color="#0000FF">do</font></b> <b><font color="#0000FF">tell</font></b> cool <b><font color="#000000">products</font></b><font color="#990000">()</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">do</font></b><font color="#FF0000">{</font> <b><font color="#0000FF">sub</font></b><i><font color="#9A1900">#tract</font></i> -cool<font color="#FF0000">{</font> <font color="#009900">$products</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">shift</font></b> <font color="#009900">@the</font><font color="#990000">,</font> <font color="#009900">@bad</font><font color="#990000">,</font> <font color="#009900">@ones</font><font color="#990000">;</font> +<b><font color="#ffffff">our</font></b><font color="#ff0000"> </font><font color="#ff0000">$news</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><b><font color="#ffffff">tell</font></b><font color="#ff0000"> cool </font><font color="#7bc710">products</font><font color="#F3E651">()</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">sub</font></b><i><font color="#ababab">#tract</font></i> +<font color="#ff0000">cool</font><font color="#F3E651">{</font><font color="#ff0000"> </font><font color="#ff0000">$products</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b><font color="#ff0000"> </font><font color="#ff0000">@the</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">@bad</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">@ones</font><font color="#F3E651">;</font> -<b><font color="#0000FF">do</font></b> <b><font color="#0000FF">bless</font></b> <font color="#990000">[</font><b><font color="#0000FF">q</font></b><font color="#FF0000">(uality)</font><font color="#990000">],</font> <font color="#009900">$products</font> -<b><font color="#0000FF">and</font></b> <b><font color="#0000FF">return</font></b> not <b><font color="#0000FF">undef</font></b> <font color="#009900">$stuff</font> <b><font color="#0000FF">if</font></b> <b><font color="#000000">not</font></b> <font color="#990000">(</font><b><font color="#0000FF">local</font></b> <font color="#009900">$available</font><font color="#990000">)</font> <font color="#FF0000">}}</font><font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><b><font color="#ffffff">bless</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><b><font color="#ffffff">q</font></b><font color="#bb00ff">(uality)</font><font color="#F3E651">],</font><font color="#ff0000"> </font><font color="#ff0000">$products</font><font color="#ff0000"> </font> +<b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> not </font><b><font color="#ffffff">undef</font></b><font color="#ff0000"> </font><font color="#ff0000">$stuff</font><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#7bc710">not</font><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">$available</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">}}</font><font color="#F3E651">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> study <b><font color="#0000FF">and</font></b> study <b><font color="#0000FF">and</font></b> study <b><font color="#0000FF">for</font></b> cool <b><font color="#000000">products</font></b><font color="#990000">()</font> <font color="#FF0000">}</font> -<b><font color="#0000FF">and</font></b> <b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">seek</font></b> <font color="#009900">$all</font><font color="#990000">,</font> cool <b><font color="#000000">products</font></b><font color="#990000">(),</font> <font color="#FF0000">{</font> to <font color="#990000">=></font> <font color="#009900">$buy</font> <font color="#FF0000">}</font> <font color="#FF0000">}</font><font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> study </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> cool </font><font color="#7bc710">products</font><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">}</font> +<b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">seek</font></b><font color="#ff0000"> </font><font color="#ff0000">$all</font><font color="#F3E651">,</font><font color="#ff0000"> cool </font><font color="#7bc710">products</font><font color="#F3E651">(),</font><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> to </font><font color="#F3E651">=></font><font color="#ff0000"> </font><font color="#ff0000">$buy</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> -<b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> <b><font color="#0000FF">write</font></b> <font color="#009900">$them</font><font color="#990000">,</font> <font color="#009900">$down</font> <font color="#FF0000">}</font> <b><font color="#0000FF">and</font></b> <b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> order<font color="#990000">:</font> <b><font color="#0000FF">foreach</font></b> <font color="#990000">(</font><font color="#009900">@case</font><font color="#990000">)</font> <font color="#FF0000">{</font> <b><font color="#0000FF">package</font></b> <b><font color="#0000FF">s</font></b> <font color="#FF0000">}</font> <font color="#FF0000">}</font><font color="#990000">;</font> -<b><font color="#0000FF">goto</font></b> home <b><font color="#0000FF">if</font></b> not <b><font color="#0000FF">exists</font></b> <font color="#009900">$more</font><font color="#FF0000">{</font>money<font color="#FF0000">}</font> or <b><font color="#0000FF">die</font></b> <b><font color="#0000FF">q</font></b><font color="#FF0000">(uerying)</font> <font color="#990000">;</font><b><font color="#0000FF">for</font></b><font color="#990000">(</font> <font color="#009900">@money</font><font color="#990000">)</font><font color="#FF0000">{}</font><font color="#990000">;</font> +<b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">write</font></b><font color="#ff0000"> </font><font color="#ff0000">$them</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$down</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> order</font><font color="#F3E651">:</font><font color="#ff0000"> </font><b><font color="#ffffff">foreach</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">@case</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> </font><b><font color="#ffffff">package</font></b><font color="#ff0000"> </font><b><font color="#ffffff">s</font></b><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<b><font color="#ffffff">goto</font></b><font color="#ff0000"> home </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> not </font><b><font color="#ffffff">exists</font></b><font color="#ff0000"> </font><font color="#ff0000">$more</font><font color="#F3E651">{</font><font color="#ff0000">money</font><font color="#F3E651">}</font><font color="#ff0000"> or </font><b><font color="#ffffff">die</font></b><font color="#ff0000"> </font><b><font color="#ffffff">q</font></b><font color="#bb00ff">(uerying)</font><font color="#ff0000"> </font><font color="#F3E651">;</font><b><font color="#ffffff">for</font></b><font color="#F3E651">(</font><font color="#ff0000"> </font><font color="#ff0000">@money</font><font color="#F3E651">)</font><font color="#F3E651">{}</font><font color="#F3E651">;</font> -at<font color="#990000">:;</font>home<font color="#990000">:</font> <b><font color="#0000FF">do</font></b> <font color="#FF0000">{</font> END<font color="#FF0000">{}</font> <b><font color="#0000FF">and</font></b><font color="#990000">:;</font> rest<font color="#990000">:;</font> a<font color="#990000">:;</font> bit<font color="#990000">:</font> <b><font color="#0000FF">exit</font></b> <font color="#009900">$shopping</font> <font color="#FF0000">}</font> -<b><font color="#0000FF">and</font></b> <b><font color="#0000FF">sleep</font></b> until <b><font color="#0000FF">unpack</font></b><font color="#009900">$ing</font><font color="#990000">,</font> cool <b><font color="#000000">products</font></b><font color="#990000">();</font> +<font color="#ff0000">at</font><font color="#F3E651">:;</font><font color="#ff0000">home</font><font color="#F3E651">:</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> END</font><font color="#F3E651">{}</font><font color="#ff0000"> </font><b><font color="#ffffff">and</font></b><font color="#F3E651">:;</font><font color="#ff0000"> rest</font><font color="#F3E651">:;</font><font color="#ff0000"> a</font><font color="#F3E651">:;</font><font color="#ff0000"> bit</font><font color="#F3E651">:</font><font color="#ff0000"> </font><b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><font color="#ff0000">$shopping</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#ff0000"> </font> +<b><font color="#ffffff">and</font></b><font color="#ff0000"> </font><b><font color="#ffffff">sleep</font></b><font color="#ff0000"> until </font><b><font color="#ffffff">unpack</font></b><font color="#ff0000">$ing</font><font color="#F3E651">,</font><font color="#ff0000"> cool </font><font color="#7bc710">products</font><font color="#F3E651">();</font> -__END__ -This is perl<font color="#990000">,</font> v5<font color="#990000">.</font><font color="#993399">8.8</font> built <b><font color="#0000FF">for</font></b> i386<font color="#990000">-</font>freebsd<font color="#990000">-</font>64int +<font color="#ff0000">__END__</font> +<font color="#ff0000">This is perl</font><font color="#F3E651">,</font><font color="#ff0000"> v5</font><font color="#F3E651">.</font><font color="#bb00ff">8.8</font><font color="#ff0000"> built </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i386</font><font color="#F3E651">-</font><font color="#ff0000">freebsd</font><font color="#F3E651">-</font><font color="#ff0000">64int</font> </pre> <br /> <h2 style='display: inline' id='More'>More...</h2><br /> diff --git a/gemfeed/2010-04-09-standard-ml-and-haskell.html b/gemfeed/2010-04-09-standard-ml-and-haskell.html index 84ae1fc7..6b3b5e89 100644 --- a/gemfeed/2010-04-09-standard-ml-and-haskell.html +++ b/gemfeed/2010-04-09-standard-ml-and-haskell.html @@ -26,10 +26,10 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">datatype</font></b> ’a multi - <font color="#990000">=</font> EMPTY - <font color="#990000">|</font> ELEM <b><font color="#0000FF">of</font></b> ’a - <font color="#990000">|</font> UNION <b><font color="#0000FF">of</font></b> ’a multi <font color="#990000">*</font> ’a multi +<pre><b><font color="#ffffff">datatype</font></b><font color="#ff0000"> ’a multi</font> +<font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> EMPTY</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> ELEM </font><b><font color="#ffffff">of</font></b><font color="#ff0000"> ’a</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> UNION </font><b><font color="#ffffff">of</font></b><font color="#ff0000"> ’a multi </font><font color="#F3E651">*</font><font color="#ff0000"> ’a multi</font> </pre> <br /> <span>Haskell:</span><br /> @@ -38,11 +38,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">data</font></b> <font color="#990000">(</font><font color="#009900">Eq</font> a<font color="#990000">)</font> <font color="#990000">=></font> <font color="#009900">Multi</font> a - <font color="#990000">=</font> <font color="#009900">Empty</font> - <font color="#990000">|</font> <font color="#009900">Elem</font> a - <font color="#990000">|</font> <font color="#009900">Union</font> <font color="#990000">(</font><font color="#009900">Multi</font> a<font color="#990000">)</font> <font color="#990000">(</font><font color="#009900">Multi</font> a<font color="#990000">)</font> - <b><font color="#0000FF">deriving</font></b> <font color="#009900">Show</font> +<pre><b><font color="#ffffff">data</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Eq</font></b><font color="#ff0000"> a</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=></font><font color="#ff0000"> </font><b><font color="#F35E1E">Multi</font></b><font color="#ff0000"> a</font> +<font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#F35E1E">Empty</font></b> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> </font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> a</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> </font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Multi</font></b><font color="#ff0000"> a</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Multi</font></b><font color="#ff0000"> a</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">deriving</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">Show</font></b> </pre> <br /> <h2 style='display: inline' id='Processingamulti'>Processing a multi</h2><br /> @@ -53,12 +53,12 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">fun</font></b> number <font color="#990000">(</font>EMPTY<font color="#990000">)</font> _ <font color="#990000">=</font> <font color="#993399">0</font> - <font color="#990000">|</font> number <font color="#990000">(</font>ELEM x<font color="#990000">)</font> w <font color="#990000">=</font> <b><font color="#0000FF">if</font></b> x <font color="#990000">=</font> w <b><font color="#0000FF">then</font></b> <font color="#993399">1</font> <b><font color="#0000FF">else</font></b> <font color="#993399">0</font> - <font color="#990000">|</font> number <font color="#990000">(</font>UNION <font color="#990000">(</font>x<font color="#990000">,</font>y<font color="#990000">))</font> w <font color="#990000">=</font> <font color="#990000">(</font>number x w<font color="#990000">)</font> <font color="#990000">+</font> <font color="#990000">(</font>number y w<font color="#990000">)</font> -<b><font color="#0000FF">fun</font></b> test_number w <font color="#990000">=</font> number <font color="#990000">(</font>UNION <font color="#990000">(</font>EMPTY<font color="#990000">,</font> <font color="#990000">\</font> - UNION <font color="#990000">(</font>ELEM <font color="#993399">4</font><font color="#990000">,</font> UNION <font color="#990000">(</font>ELEM <font color="#993399">6</font><font color="#990000">,</font> <font color="#990000">\</font> - UNION <font color="#990000">(</font>UNION <font color="#990000">(</font>ELEM <font color="#993399">4</font><font color="#990000">,</font> ELEM <font color="#993399">4</font><font color="#990000">),</font> EMPTY<font color="#990000">)))))</font> w +<pre><b><font color="#ffffff">fun</font></b><font color="#ff0000"> number </font><font color="#F3E651">(</font><font color="#ff0000">EMPTY</font><font color="#F3E651">)</font><font color="#ff0000"> _ </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> number </font><font color="#F3E651">(</font><font color="#ff0000">ELEM x</font><font color="#F3E651">)</font><font color="#ff0000"> w </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> x </font><font color="#F3E651">=</font><font color="#ff0000"> w </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> </font><font color="#bb00ff">1</font><font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> number </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">x</font><font color="#F3E651">,</font><font color="#ff0000">y</font><font color="#F3E651">))</font><font color="#ff0000"> w </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">number x w</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">+</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">number y w</font><font color="#F3E651">)</font> +<b><font color="#ffffff">fun</font></b><font color="#ff0000"> test_number w </font><font color="#F3E651">=</font><font color="#ff0000"> number </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">EMPTY</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> UNION </font><font color="#F3E651">(</font><font color="#ff0000">ELEM </font><font color="#bb00ff">4</font><font color="#F3E651">,</font><font color="#ff0000"> UNION </font><font color="#F3E651">(</font><font color="#ff0000">ELEM </font><font color="#bb00ff">6</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> UNION </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">ELEM </font><font color="#bb00ff">4</font><font color="#F3E651">,</font><font color="#ff0000"> ELEM </font><font color="#bb00ff">4</font><font color="#F3E651">),</font><font color="#ff0000"> EMPTY</font><font color="#F3E651">)))))</font><font color="#ff0000"> w </font> </pre> <br /> <span>Haskell:</span><br /> @@ -67,11 +67,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>number <font color="#009900">Empty</font> <b><font color="#0000FF">_</font></b> <font color="#990000">=</font> <font color="#993399">0</font> -number <font color="#990000">(</font><font color="#009900">Elem</font> x<font color="#990000">)</font> w <font color="#990000">=</font> <b><font color="#0000FF">if</font></b> x <font color="#990000">==</font> w <b><font color="#0000FF">then</font></b> <font color="#993399">1</font> <b><font color="#0000FF">else</font></b> <font color="#993399">0</font> -test_number w <font color="#990000">=</font> number <font color="#990000">(</font><font color="#009900">Union</font> <font color="#009900">Empty</font> <font color="#990000">\</font> - <font color="#990000">(</font><font color="#009900">Union</font> <font color="#990000">(</font><font color="#009900">Elem</font> <font color="#993399">4</font><font color="#990000">)</font> <font color="#990000">(</font><font color="#009900">Union</font> <font color="#990000">(</font><font color="#009900">Elem</font> <font color="#993399">6</font><font color="#990000">)</font> <font color="#990000">\</font> - <font color="#990000">(</font><font color="#009900">Union</font> <font color="#990000">(</font><font color="#009900">Union</font> <font color="#990000">(</font><font color="#009900">Elem</font> <font color="#993399">4</font><font color="#990000">)</font> <font color="#990000">(</font><font color="#009900">Elem</font> <font color="#993399">4</font><font color="#990000">))</font> <font color="#009900">Empty</font><font color="#990000">))))</font> w +<pre><font color="#ff0000">number </font><b><font color="#F35E1E">Empty</font></b><font color="#ff0000"> </font><b><font color="#ffffff">_</font></b><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000">number </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> x</font><font color="#F3E651">)</font><font color="#ff0000"> w </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> x </font><font color="#F3E651">==</font><font color="#ff0000"> w </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> </font><font color="#bb00ff">1</font><font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000">test_number w </font><font color="#F3E651">=</font><font color="#ff0000"> number </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">Empty</font></b><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> </font><font color="#bb00ff">4</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> </font><font color="#bb00ff">6</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> </font><font color="#bb00ff">4</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> </font><font color="#bb00ff">4</font><font color="#F3E651">))</font><font color="#ff0000"> </font><b><font color="#F35E1E">Empty</font></b><font color="#F3E651">))))</font><font color="#ff0000"> w</font> </pre> <br /> <h2 style='display: inline' id='Simplifyfunction'>Simplify function</h2><br /> @@ -82,19 +82,19 @@ test_number w <font color="#990000">=</font> number <font color="#990000">(</fon by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">fun</font></b> simplify <font color="#990000">(</font>UNION <font color="#990000">(</font>x<font color="#990000">,</font>y<font color="#990000">))</font> <font color="#990000">=</font> - <b><font color="#0000FF">let</font></b> <b><font color="#0000FF">fun</font></b> is_empty <font color="#990000">(</font>EMPTY<font color="#990000">)</font> <font color="#990000">=</font> true <font color="#990000">|</font> is_empty _ <font color="#990000">=</font> false - <b><font color="#0000FF">val</font></b> x’ <font color="#990000">=</font> simplify x - <b><font color="#0000FF">val</font></b> y’ <font color="#990000">=</font> simplify y - <b><font color="#0000FF">in</font></b> <b><font color="#0000FF">if</font></b> <font color="#990000">(</font>is_empty x’<font color="#990000">)</font> <b><font color="#0000FF">andalso</font></b> <font color="#990000">(</font>is_empty y’<font color="#990000">)</font> - <b><font color="#0000FF">then</font></b> EMPTY - <b><font color="#0000FF">else</font></b> <b><font color="#0000FF">if</font></b> <font color="#990000">(</font>is_empty x’<font color="#990000">)</font> - <b><font color="#0000FF">then</font></b> y’ - <b><font color="#0000FF">else</font></b> <b><font color="#0000FF">if</font></b> <font color="#990000">(</font>is_empty y’<font color="#990000">)</font> - <b><font color="#0000FF">then</font></b> x’ - <b><font color="#0000FF">else</font></b> UNION <font color="#990000">(</font>x’<font color="#990000">,</font> y’<font color="#990000">)</font> - <b><font color="#0000FF">end</font></b> - <font color="#990000">|</font> simplify x <font color="#990000">=</font> x +<pre><b><font color="#ffffff">fun</font></b><font color="#ff0000"> simplify </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">x</font><font color="#F3E651">,</font><font color="#ff0000">y</font><font color="#F3E651">))</font><font color="#ff0000"> </font><font color="#F3E651">=</font> +<font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><b><font color="#ffffff">fun</font></b><font color="#ff0000"> is_empty </font><font color="#F3E651">(</font><font color="#ff0000">EMPTY</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> true </font><font color="#F3E651">|</font><font color="#ff0000"> is_empty _ </font><font color="#F3E651">=</font><font color="#ff0000"> false</font> +<font color="#ff0000"> </font><b><font color="#ffffff">val</font></b><font color="#ff0000"> x’ </font><font color="#F3E651">=</font><font color="#ff0000"> simplify x</font> +<font color="#ff0000"> </font><b><font color="#ffffff">val</font></b><font color="#ff0000"> y’ </font><font color="#F3E651">=</font><font color="#ff0000"> simplify y</font> +<font color="#ff0000"> </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">is_empty x’</font><font color="#F3E651">)</font><font color="#ff0000"> </font><b><font color="#ffffff">andalso</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">is_empty y’</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> EMPTY</font> +<font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">is_empty x’</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> y’</font> +<font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">is_empty y’</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> x’</font> +<font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> UNION </font><font color="#F3E651">(</font><font color="#ff0000">x’</font><font color="#F3E651">,</font><font color="#ff0000"> y’</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">end</font></b> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> simplify x </font><font color="#F3E651">=</font><font color="#ff0000"> x</font> </pre> <br /> <span>Haskell:</span><br /> @@ -103,17 +103,17 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>simplify <font color="#990000">(</font><font color="#009900">Union</font> x y<font color="#990000">)</font> - <font color="#990000">|</font> <font color="#990000">(</font>isEmpty x’<font color="#990000">)</font> <font color="#990000">&&</font> <font color="#990000">(</font>isEmpty y’<font color="#990000">)</font> <font color="#990000">=</font> <font color="#009900">Empty</font> - <font color="#990000">|</font> isEmpty x’ <font color="#990000">=</font> y’ - <font color="#990000">|</font> isEmpty y’ <font color="#990000">=</font> x’ - <font color="#990000">|</font> otherwise <font color="#990000">=</font> <font color="#009900">Union</font> x’ y’ - <b><font color="#0000FF">where</font></b> - isEmpty <font color="#009900">Empty</font> <font color="#990000">=</font> <font color="#009900">True</font> - isEmpty <b><font color="#0000FF">_</font></b> <font color="#990000">=</font> <font color="#009900">False</font> - x’ <font color="#990000">=</font> simplify x - y’ <font color="#990000">=</font> simplify y -simplify x <font color="#990000">=</font> x +<pre><font color="#ff0000">simplify </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> x y</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">isEmpty x’</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">isEmpty y’</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#F35E1E">Empty</font></b> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> isEmpty x’ </font><font color="#F3E651">=</font><font color="#ff0000"> y’</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> isEmpty y’ </font><font color="#F3E651">=</font><font color="#ff0000"> x’</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> otherwise </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> x’ y’</font> +<font color="#ff0000"> </font><b><font color="#ffffff">where</font></b> +<font color="#ff0000"> isEmpty </font><b><font color="#F35E1E">Empty</font></b><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#F35E1E">True</font></b> +<font color="#ff0000"> isEmpty </font><b><font color="#ffffff">_</font></b><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#F35E1E">False</font></b> +<font color="#ff0000"> x’ </font><font color="#F3E651">=</font><font color="#ff0000"> simplify x</font> +<font color="#ff0000"> y’ </font><font color="#F3E651">=</font><font color="#ff0000"> simplify y</font> +<font color="#ff0000">simplify x </font><font color="#F3E651">=</font><font color="#ff0000"> x</font> </pre> <br /> <h2 style='display: inline' id='Deleteall'>Delete all</h2><br /> @@ -124,12 +124,12 @@ simplify x <font color="#990000">=</font> x by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">fun</font></b> delete_all m w <font color="#990000">=</font> - <b><font color="#0000FF">let</font></b> <b><font color="#0000FF">fun</font></b> delete_all’ <font color="#990000">(</font>ELEM x<font color="#990000">)</font> <font color="#990000">=</font> <b><font color="#0000FF">if</font></b> x <font color="#990000">=</font> w <b><font color="#0000FF">then</font></b> EMPTY <b><font color="#0000FF">else</font></b> ELEM x - <font color="#990000">|</font> delete_all’ <font color="#990000">(</font>UNION <font color="#990000">(</font>x<font color="#990000">,</font>y<font color="#990000">))</font> <font color="#990000">=</font> UNION <font color="#990000">(</font>delete_all’ x<font color="#990000">,</font> delete_all’ y<font color="#990000">)</font> - <font color="#990000">|</font> delete_all’ x <font color="#990000">=</font> x - <b><font color="#0000FF">in</font></b> simplify <font color="#990000">(</font>delete_all’ m<font color="#990000">)</font> - <b><font color="#0000FF">end</font></b> +<pre><b><font color="#ffffff">fun</font></b><font color="#ff0000"> delete_all m w </font><font color="#F3E651">=</font> +<font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><b><font color="#ffffff">fun</font></b><font color="#ff0000"> delete_all’ </font><font color="#F3E651">(</font><font color="#ff0000">ELEM x</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> x </font><font color="#F3E651">=</font><font color="#ff0000"> w </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> EMPTY </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> ELEM x</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> delete_all’ </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">x</font><font color="#F3E651">,</font><font color="#ff0000">y</font><font color="#F3E651">))</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> UNION </font><font color="#F3E651">(</font><font color="#ff0000">delete_all’ x</font><font color="#F3E651">,</font><font color="#ff0000"> delete_all’ y</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> delete_all’ x </font><font color="#F3E651">=</font><font color="#ff0000"> x</font> +<font color="#ff0000"> </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> simplify </font><font color="#F3E651">(</font><font color="#ff0000">delete_all’ m</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">end</font></b> </pre> <br /> <span>Haskell:</span><br /> @@ -138,11 +138,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>delete_all m w <font color="#990000">=</font> simplify <font color="#990000">(</font>delete_all’ m<font color="#990000">)</font> - <b><font color="#0000FF">where</font></b> - delete_all’ <font color="#990000">(</font><font color="#009900">Elem</font> x<font color="#990000">)</font> <font color="#990000">=</font> <b><font color="#0000FF">if</font></b> x <font color="#990000">==</font> w <b><font color="#0000FF">then</font></b> <font color="#009900">Empty</font> <b><font color="#0000FF">else</font></b> <font color="#009900">Elem</font> x - delete_all’ <font color="#990000">(</font><font color="#009900">Union</font> x y<font color="#990000">)</font> <font color="#990000">=</font> <font color="#009900">Union</font> <font color="#990000">(</font>delete_all’ x<font color="#990000">)</font> <font color="#990000">(</font>delete_all’ y<font color="#990000">)</font> - delete_all’ x <font color="#990000">=</font> x +<pre><font color="#ff0000">delete_all m w </font><font color="#F3E651">=</font><font color="#ff0000"> simplify </font><font color="#F3E651">(</font><font color="#ff0000">delete_all’ m</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">where</font></b> +<font color="#ff0000"> delete_all’ </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> x</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> x </font><font color="#F3E651">==</font><font color="#ff0000"> w </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">Empty</font></b><font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> x</font> +<font color="#ff0000"> delete_all’ </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> x y</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">delete_all’ x</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">delete_all’ y</font><font color="#F3E651">)</font> +<font color="#ff0000"> delete_all’ x </font><font color="#F3E651">=</font><font color="#ff0000"> x</font> </pre> <br /> <h2 style='display: inline' id='Deleteone'>Delete one</h2><br /> @@ -153,21 +153,21 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">fun</font></b> delete_one m w <font color="#990000">=</font> - <b><font color="#0000FF">let</font></b> <b><font color="#0000FF">fun</font></b> delete_one’ <font color="#990000">(</font>UNION <font color="#990000">(</font>x<font color="#990000">,</font>y<font color="#990000">))</font> <font color="#990000">=</font> - <b><font color="#0000FF">let</font></b> <b><font color="#0000FF">val</font></b> <font color="#990000">(</font>x’<font color="#990000">,</font> deleted<font color="#990000">)</font> <font color="#990000">=</font> delete_one’ x - <b><font color="#0000FF">in</font></b> <b><font color="#0000FF">if</font></b> deleted - <b><font color="#0000FF">then</font></b> <font color="#990000">(</font>UNION <font color="#990000">(</font>x’<font color="#990000">,</font> y<font color="#990000">),</font> deleted<font color="#990000">)</font> - <b><font color="#0000FF">else</font></b> <b><font color="#0000FF">let</font></b> <b><font color="#0000FF">val</font></b> <font color="#990000">(</font>y’<font color="#990000">,</font> deleted<font color="#990000">)</font> <font color="#990000">=</font> delete_one’ y - <b><font color="#0000FF">in</font></b> <font color="#990000">(</font>UNION <font color="#990000">(</font>x<font color="#990000">,</font> y’<font color="#990000">),</font> deleted<font color="#990000">)</font> - <b><font color="#0000FF">end</font></b> - <b><font color="#0000FF">end</font></b> - <font color="#990000">|</font> delete_one’ <font color="#990000">(</font>ELEM x<font color="#990000">)</font> <font color="#990000">=</font> - <b><font color="#0000FF">if</font></b> x <font color="#990000">=</font> w <b><font color="#0000FF">then</font></b> <font color="#990000">(</font>EMPTY<font color="#990000">,</font> true<font color="#990000">)</font> <b><font color="#0000FF">else</font></b> <font color="#990000">(</font>ELEM x<font color="#990000">,</font> false<font color="#990000">)</font> - <font color="#990000">|</font> delete_one’ x <font color="#990000">=</font> <font color="#990000">(</font>x<font color="#990000">,</font> false<font color="#990000">)</font> - <b><font color="#0000FF">val</font></b> <font color="#990000">(</font>m’<font color="#990000">,</font> _<font color="#990000">)</font> <font color="#990000">=</font> delete_one’ m - <b><font color="#0000FF">in</font></b> simplify m’ - <b><font color="#0000FF">end</font></b> +<pre><b><font color="#ffffff">fun</font></b><font color="#ff0000"> delete_one m w </font><font color="#F3E651">=</font> +<font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><b><font color="#ffffff">fun</font></b><font color="#ff0000"> delete_one’ </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">x</font><font color="#F3E651">,</font><font color="#ff0000">y</font><font color="#F3E651">))</font><font color="#ff0000"> </font><font color="#F3E651">=</font> +<font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><b><font color="#ffffff">val</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">x’</font><font color="#F3E651">,</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> delete_one’ x</font> +<font color="#ff0000"> </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> deleted</font> +<font color="#ff0000"> </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">x’</font><font color="#F3E651">,</font><font color="#ff0000"> y</font><font color="#F3E651">),</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><b><font color="#ffffff">val</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">y’</font><font color="#F3E651">,</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> delete_one’ y</font> +<font color="#ff0000"> </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">UNION </font><font color="#F3E651">(</font><font color="#ff0000">x</font><font color="#F3E651">,</font><font color="#ff0000"> y’</font><font color="#F3E651">),</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">end</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">end</font></b> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> delete_one’ </font><font color="#F3E651">(</font><font color="#ff0000">ELEM x</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> x </font><font color="#F3E651">=</font><font color="#ff0000"> w </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">EMPTY</font><font color="#F3E651">,</font><font color="#ff0000"> true</font><font color="#F3E651">)</font><font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">ELEM x</font><font color="#F3E651">,</font><font color="#ff0000"> false</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> delete_one’ x </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">x</font><font color="#F3E651">,</font><font color="#ff0000"> false</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">val</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">m’</font><font color="#F3E651">,</font><font color="#ff0000"> _</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> delete_one’ m</font> +<font color="#ff0000"> </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> simplify m’</font> +<font color="#ff0000"> </font><b><font color="#ffffff">end</font></b> </pre> <br /> <span>Haskell:</span><br /> @@ -176,19 +176,19 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>delete_one m w <font color="#990000">=</font> <b><font color="#0000FF">do</font></b> - <b><font color="#0000FF">let</font></b> <font color="#990000">(</font>m’<font color="#990000">,</font> <b><font color="#0000FF">_</font></b><font color="#990000">)</font> <font color="#990000">=</font> delete_one’ m - simplify m’ - <b><font color="#0000FF">where</font></b> - delete_one’ <font color="#990000">(</font><font color="#009900">Union</font> x y<font color="#990000">)</font> <font color="#990000">=</font> - <b><font color="#0000FF">let</font></b> <font color="#990000">(</font>x’<font color="#990000">,</font> deleted<font color="#990000">)</font> <font color="#990000">=</font> delete_one’ x - <b><font color="#0000FF">in</font></b> <b><font color="#0000FF">if</font></b> deleted - <b><font color="#0000FF">then</font></b> <font color="#990000">(</font><font color="#009900">Union</font> x’ y<font color="#990000">,</font> deleted<font color="#990000">)</font> - <b><font color="#0000FF">else</font></b> <b><font color="#0000FF">let</font></b> <font color="#990000">(</font>y’<font color="#990000">,</font> deleted<font color="#990000">)</font> <font color="#990000">=</font> delete_one’ y - <b><font color="#0000FF">in</font></b> <font color="#990000">(</font><font color="#009900">Union</font> x y’<font color="#990000">,</font> deleted<font color="#990000">)</font> - delete_one’ <font color="#990000">(</font><font color="#009900">Elem</font> x<font color="#990000">)</font> <font color="#990000">=</font> - <b><font color="#0000FF">if</font></b> x <font color="#990000">==</font> w <b><font color="#0000FF">then</font></b> <font color="#990000">(</font><font color="#009900">Empty</font><font color="#990000">,</font> <font color="#009900">True</font><font color="#990000">)</font> <b><font color="#0000FF">else</font></b> <font color="#990000">(</font><font color="#009900">Elem</font> x<font color="#990000">,</font> <font color="#009900">False</font><font color="#990000">)</font> - delete_one’ x <font color="#990000">=</font> <font color="#990000">(</font>x<font color="#990000">,</font> <font color="#009900">False</font><font color="#990000">)</font> +<pre><font color="#ff0000">delete_one m w </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">m’</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">_</font></b><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> delete_one’ m</font> +<font color="#ff0000"> simplify m’</font> +<font color="#ff0000"> </font><b><font color="#ffffff">where</font></b> +<font color="#ff0000"> delete_one’ </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> x y</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font> +<font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">x’</font><font color="#F3E651">,</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> delete_one’ x</font> +<font color="#ff0000"> </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> deleted</font> +<font color="#ff0000"> </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> x’ y</font><font color="#F3E651">,</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><b><font color="#ffffff">let</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">y’</font><font color="#F3E651">,</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> delete_one’ y</font> +<font color="#ff0000"> </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Union</font></b><font color="#ff0000"> x y’</font><font color="#F3E651">,</font><font color="#ff0000"> deleted</font><font color="#F3E651">)</font> +<font color="#ff0000"> delete_one’ </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> x</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> x </font><font color="#F3E651">==</font><font color="#ff0000"> w </font><b><font color="#ffffff">then</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Empty</font></b><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#F35E1E">True</font></b><font color="#F3E651">)</font><font color="#ff0000"> </font><b><font color="#ffffff">else</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><b><font color="#F35E1E">Elem</font></b><font color="#ff0000"> x</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#F35E1E">False</font></b><font color="#F3E651">)</font> +<font color="#ff0000"> delete_one’ x </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">x</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#F35E1E">False</font></b><font color="#F3E651">)</font> </pre> <br /> <h2 style='display: inline' id='Higherorderfunctions'>Higher-order functions</h2><br /> diff --git a/gemfeed/2010-05-09-the-fype-programming-language.html b/gemfeed/2010-05-09-the-fype-programming-language.html index 1728107d..4f9ab23c 100644 --- a/gemfeed/2010-05-09-the-fype-programming-language.html +++ b/gemfeed/2010-05-09-the-fype-programming-language.html @@ -37,12 +37,12 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">typedef</font></b> <b><font color="#0000FF">struct</font></b> <font color="#FF0000">{</font> - <font color="#008080">Tupel</font> <font color="#990000">*</font>p_tupel_argv<font color="#990000">;</font> <i><font color="#9A1900">// Contains command line options</font></i> - <font color="#008080">List</font> <font color="#990000">*</font>p_list_token<font color="#990000">;</font> <i><font color="#9A1900">// Initial list of token</font></i> - <font color="#008080">Hash</font> <font color="#990000">*</font>p_hash_syms<font color="#990000">;</font> <i><font color="#9A1900">// Symbol table</font></i> - <font color="#009900">char</font> <font color="#990000">*</font>c_basename<font color="#990000">;</font> -<font color="#FF0000">}</font> Fype<font color="#990000">;</font> +<pre><b><font color="#ffffff">typedef</font></b><font color="#ff0000"> </font><b><font color="#ffffff">struct</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">Tupel</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">p_tupel_argv</font><font color="#F3E651">;</font><font color="#ff0000"> </font><i><font color="#ababab">// Contains command line options</font></i> +<font color="#ff0000"> </font><font color="#ff0000">List</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">p_list_token</font><font color="#F3E651">;</font><font color="#ff0000"> </font><i><font color="#ababab">// Initial list of token</font></i> +<font color="#ff0000"> </font><font color="#ff0000">Hash</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">p_hash_syms</font><font color="#F3E651">;</font><font color="#ff0000"> </font><i><font color="#ababab">// Symbol table</font></i> +<font color="#ff0000"> </font><b><font color="#F35E1E">char</font></b><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">c_basename</font><font color="#F3E651">;</font> +<font color="#F3E651">}</font><font color="#ff0000"> Fype</font><font color="#F3E651">;</font> </pre> <br /> <span>And here is a snippet from the primary Fype "class implementation":</span><br /> @@ -51,53 +51,53 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>Fype<font color="#990000">*</font> -<b><font color="#000000">fype_new</font></b><font color="#990000">()</font> <font color="#FF0000">{</font> - <font color="#008080">Fype</font> <font color="#990000">*</font>p_fype <font color="#990000">=</font> <b><font color="#000000">malloc</font></b><font color="#990000">(</font><b><font color="#0000FF">sizeof</font></b><font color="#990000">(</font>Fype<font color="#990000">));</font> +<pre><font color="#ff0000">Fype</font><font color="#F3E651">*</font> +<font color="#7bc710">fype_new</font><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">Fype</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">p_fype </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">malloc</font><font color="#F3E651">(</font><b><font color="#ffffff">sizeof</font></b><font color="#F3E651">(</font><font color="#ff0000">Fype</font><font color="#F3E651">));</font> - p_fype<font color="#990000">-></font>p_hash_syms <font color="#990000">=</font> <b><font color="#000000">hash_new</font></b><font color="#990000">(</font><font color="#993399">512</font><font color="#990000">);</font> - p_fype<font color="#990000">-></font>p_list_token <font color="#990000">=</font> <b><font color="#000000">list_new</font></b><font color="#990000">();</font> - p_fype<font color="#990000">-></font>p_tupel_argv <font color="#990000">=</font> <b><font color="#000000">tupel_new</font></b><font color="#990000">();</font> - p_fype<font color="#990000">-></font>c_basename <font color="#990000">=</font> NULL<font color="#990000">;</font> +<font color="#ff0000"> p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_hash_syms </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">hash_new</font><font color="#F3E651">(</font><font color="#bb00ff">512</font><font color="#F3E651">);</font> +<font color="#ff0000"> p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_list_token </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">list_new</font><font color="#F3E651">();</font> +<font color="#ff0000"> p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_tupel_argv </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">tupel_new</font><font color="#F3E651">();</font> +<font color="#ff0000"> p_fype</font><font color="#F3E651">-></font><font color="#ff0000">c_basename </font><font color="#F3E651">=</font><font color="#ff0000"> NULL</font><font color="#F3E651">;</font> - <b><font color="#000000">garbage_init</font></b><font color="#990000">();</font> +<font color="#ff0000"> </font><font color="#7bc710">garbage_init</font><font color="#F3E651">();</font> - <b><font color="#0000FF">return</font></b> <font color="#990000">(</font>p_fype<font color="#990000">);</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">);</font> +<font color="#F3E651">}</font> -<font color="#009900">void</font> -<b><font color="#000000">fype_delete</font></b><font color="#990000">(</font><font color="#008080">Fype</font> <font color="#990000">*</font>p_fype<font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#000000">argv_tupel_delete</font></b><font color="#990000">(</font>p_fype<font color="#990000">-></font>p_tupel_argv<font color="#990000">);</font> +<b><font color="#F35E1E">void</font></b> +<font color="#7bc710">fype_delete</font><font color="#F3E651">(</font><font color="#ff0000">Fype</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">p_fype</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#7bc710">argv_tupel_delete</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_tupel_argv</font><font color="#F3E651">);</font> - <b><font color="#000000">hash_iterate</font></b><font color="#990000">(</font>p_fype<font color="#990000">-></font>p_hash_syms<font color="#990000">,</font> symbol_cleanup_hash_syms_cb<font color="#990000">);</font> - <b><font color="#000000">hash_delete</font></b><font color="#990000">(</font>p_fype<font color="#990000">-></font>p_hash_syms<font color="#990000">);</font> +<font color="#ff0000"> </font><font color="#7bc710">hash_iterate</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_hash_syms</font><font color="#F3E651">,</font><font color="#ff0000"> symbol_cleanup_hash_syms_cb</font><font color="#F3E651">);</font> +<font color="#ff0000"> </font><font color="#7bc710">hash_delete</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_hash_syms</font><font color="#F3E651">);</font> - <b><font color="#000000">list_iterate</font></b><font color="#990000">(</font>p_fype<font color="#990000">-></font>p_list_token<font color="#990000">,</font> token_ref_down_cb<font color="#990000">);</font> - <b><font color="#000000">list_delete</font></b><font color="#990000">(</font>p_fype<font color="#990000">-></font>p_list_token<font color="#990000">);</font> +<font color="#ff0000"> </font><font color="#7bc710">list_iterate</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_list_token</font><font color="#F3E651">,</font><font color="#ff0000"> token_ref_down_cb</font><font color="#F3E651">);</font> +<font color="#ff0000"> </font><font color="#7bc710">list_delete</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">-></font><font color="#ff0000">p_list_token</font><font color="#F3E651">);</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">(</font>p_fype<font color="#990000">-></font>c_basename<font color="#990000">)</font> - <b><font color="#000000">free</font></b><font color="#990000">(</font>p_fype<font color="#990000">-></font>c_basename<font color="#990000">);</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">-></font><font color="#ff0000">c_basename</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#7bc710">free</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">-></font><font color="#ff0000">c_basename</font><font color="#F3E651">);</font> - <b><font color="#000000">garbage_destroy</font></b><font color="#990000">();</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><font color="#7bc710">garbage_destroy</font><font color="#F3E651">();</font> +<font color="#F3E651">}</font> -<font color="#009900">int</font> -<b><font color="#000000">fype_run</font></b><font color="#990000">(</font><font color="#009900">int</font> i_argc<font color="#990000">,</font> <font color="#009900">char</font> <font color="#990000">**</font>pc_argv<font color="#990000">)</font> <font color="#FF0000">{</font> - <font color="#008080">Fype</font> <font color="#990000">*</font>p_fype <font color="#990000">=</font> <b><font color="#000000">fype_new</font></b><font color="#990000">();</font> +<b><font color="#F35E1E">int</font></b> +<font color="#7bc710">fype_run</font><font color="#F3E651">(</font><b><font color="#F35E1E">int</font></b><font color="#ff0000"> i_argc</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#F35E1E">char</font></b><font color="#ff0000"> </font><font color="#F3E651">**</font><font color="#ff0000">pc_argv</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">Fype</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">p_fype </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">fype_new</font><font color="#F3E651">();</font> - <i><font color="#9A1900">// argv: Maintains command line options</font></i> - <b><font color="#000000">argv_run</font></b><font color="#990000">(</font>p_fype<font color="#990000">,</font> i_argc<font color="#990000">,</font> pc_argv<font color="#990000">);</font> +<font color="#ff0000"> </font><i><font color="#ababab">// argv: Maintains command line options</font></i> +<font color="#ff0000"> </font><font color="#7bc710">argv_run</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">,</font><font color="#ff0000"> i_argc</font><font color="#F3E651">,</font><font color="#ff0000"> pc_argv</font><font color="#F3E651">);</font> - <i><font color="#9A1900">// scanner: Creates a list of token</font></i> - <b><font color="#000000">scanner_run</font></b><font color="#990000">(</font>p_fype<font color="#990000">);</font> +<font color="#ff0000"> </font><i><font color="#ababab">// scanner: Creates a list of token</font></i> +<font color="#ff0000"> </font><font color="#7bc710">scanner_run</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">);</font> - <i><font color="#9A1900">// interpret: Interpret the list of token</font></i> - <b><font color="#000000">interpret_run</font></b><font color="#990000">(</font>p_fype<font color="#990000">);</font> +<font color="#ff0000"> </font><i><font color="#ababab">// interpret: Interpret the list of token</font></i> +<font color="#ff0000"> </font><font color="#7bc710">interpret_run</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">);</font> - <b><font color="#000000">fype_delete</font></b><font color="#990000">(</font>p_fype<font color="#990000">);</font> +<font color="#ff0000"> </font><font color="#7bc710">fype_delete</font><font color="#F3E651">(</font><font color="#ff0000">p_fype</font><font color="#F3E651">);</font> - <b><font color="#0000FF">return</font></b> <font color="#990000">(</font><font color="#993399">0</font><font color="#990000">);</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#bb00ff">0</font><font color="#F3E651">);</font> +<font color="#F3E651">}</font> </pre> <br /> <h2 style='display: inline' id='Datatypes'>Data types</h2><br /> diff --git a/gemfeed/2011-05-07-perl-daemon-service-framework.html b/gemfeed/2011-05-07-perl-daemon-service-framework.html index 34ee06d9..3e5d08c1 100644 --- a/gemfeed/2011-05-07-perl-daemon-service-framework.html +++ b/gemfeed/2011-05-07-perl-daemon-service-framework.html @@ -41,14 +41,14 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Starting</font></i> - <font color="#990000">.</font>/bin/perldaemon start <font color="#990000">(</font>or shortcut <font color="#990000">.</font>/control start<font color="#990000">)</font> +<pre><i><font color="#ababab"># Starting</font></i> +<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/bin/perldaemon start </font><font color="#F3E651">(</font><font color="#ff0000">or shortcut </font><font color="#F3E651">.</font><font color="#ff0000">/control start</font><font color="#F3E651">)</font> -<i><font color="#9A1900"># Stopping</font></i> - <font color="#990000">.</font>/bin/perldaemon stop <font color="#990000">(</font>or shortcut <font color="#990000">.</font>/control stop<font color="#990000">)</font> +<i><font color="#ababab"># Stopping</font></i> +<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/bin/perldaemon stop </font><font color="#F3E651">(</font><font color="#ff0000">or shortcut </font><font color="#F3E651">.</font><font color="#ff0000">/control stop</font><font color="#F3E651">)</font> -<i><font color="#9A1900"># Alternatively: Starting in foreground </font></i> -<font color="#990000">.</font>/bin/perldaemon start daemon<font color="#990000">.</font><font color="#009900">daemonize</font><font color="#990000">=</font>no <font color="#990000">(</font>or shortcut <font color="#990000">.</font>/control foreground<font color="#990000">)</font> +<i><font color="#ababab"># Alternatively: Starting in foreground </font></i> +<font color="#F3E651">.</font><font color="#ff0000">/bin/perldaemon start daemon</font><font color="#F3E651">.</font><font color="#ff0000">daemonize</font><font color="#F3E651">=</font><font color="#ff0000">no </font><font color="#F3E651">(</font><font color="#ff0000">or shortcut </font><font color="#F3E651">.</font><font color="#ff0000">/control foreground</font><font color="#F3E651">)</font> </pre> <br /> <span>To stop a daemon from running in foreground mode, "Ctrl+C" must be hit. To see more available startup options run "./control" without any argument.</span><br /> @@ -61,30 +61,30 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>pb@titania<font color="#990000">:~</font>/svn/utils/perldaemon/trunk$ <font color="#990000">.</font>/control keys -<i><font color="#9A1900"># Path to the logfile</font></i> -daemon<font color="#990000">.</font><font color="#009900">logfile</font><font color="#990000">=.</font>/log/perldaemon<font color="#990000">.</font>log +<pre><font color="#ff0000">pb@titania</font><font color="#F3E651">:~</font><font color="#ff0000">/svn/utils/perldaemon/trunk$ </font><font color="#F3E651">.</font><font color="#ff0000">/control keys</font> +<i><font color="#ababab"># Path to the logfile</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">logfile</font><font color="#F3E651">=.</font><font color="#ff0000">/log/perldaemon</font><font color="#F3E651">.</font><font color="#ff0000">log</font> -<i><font color="#9A1900"># The amount of seconds until the next event look takes place</font></i> -daemon<font color="#990000">.</font><font color="#009900">loopinterval</font><font color="#990000">=</font><font color="#993399">1</font> +<i><font color="#ababab"># The amount of seconds until the next event look takes place</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font><font color="#F3E651">=</font><font color="#bb00ff">1</font> -<i><font color="#9A1900"># Path to the modules dir</font></i> -daemon<font color="#990000">.</font>modules<font color="#990000">.</font><font color="#009900">dir</font><font color="#990000">=.</font>/lib/PerlDaemonModules +<i><font color="#ababab"># Path to the modules dir</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">modules</font><font color="#F3E651">.</font><font color="#ff0000">dir</font><font color="#F3E651">=.</font><font color="#ff0000">/lib/PerlDaemonModules</font> -<i><font color="#9A1900"># Specifies either the daemon should run in daemon or foreground mode</font></i> -daemon<font color="#990000">.</font><font color="#009900">daemonize</font><font color="#990000">=</font>yes +<i><font color="#ababab"># Specifies either the daemon should run in daemon or foreground mode</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">daemonize</font><font color="#F3E651">=</font><font color="#ff0000">yes</font> -<i><font color="#9A1900"># Path to the pidfile</font></i> -daemon<font color="#990000">.</font><font color="#009900">pidfile</font><font color="#990000">=.</font>/run/perldaemon<font color="#990000">.</font>pid +<i><font color="#ababab"># Path to the pidfile</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">pidfile</font><font color="#F3E651">=.</font><font color="#ff0000">/run/perldaemon</font><font color="#F3E651">.</font><font color="#ff0000">pid</font> -<i><font color="#9A1900"># Each module should run every run interval seconds</font></i> -daemon<font color="#990000">.</font>modules<font color="#990000">.</font><font color="#009900">runinterval</font><font color="#990000">=</font><font color="#993399">3</font> +<i><font color="#ababab"># Each module should run every run interval seconds</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">modules</font><font color="#F3E651">.</font><font color="#ff0000">runinterval</font><font color="#F3E651">=</font><font color="#bb00ff">3</font> -<i><font color="#9A1900"># Path to the alive file (is touched every loop interval seconds, usable for monitoring)</font></i> -daemon<font color="#990000">.</font><font color="#009900">alivefile</font><font color="#990000">=.</font>/run/perldaemon<font color="#990000">.</font>alive +<i><font color="#ababab"># Path to the alive file (is touched every loop interval seconds, usable for monitoring)</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">alivefile</font><font color="#F3E651">=.</font><font color="#ff0000">/run/perldaemon</font><font color="#F3E651">.</font><font color="#ff0000">alive</font> -<i><font color="#9A1900"># Specifies the working directory</font></i> -daemon<font color="#990000">.</font><font color="#009900">wd</font><font color="#990000">=./</font> +<i><font color="#ababab"># Specifies the working directory</font></i> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">wd</font><font color="#F3E651">=./</font> </pre> <br /> <h2 style='display: inline' id='Example'>Example </h2><br /> @@ -95,17 +95,17 @@ daemon<font color="#990000">.</font><font color="#009900">wd</font><font color=" by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ <font color="#990000">.</font>/control keys <font color="#990000">|</font> grep daemon<font color="#990000">.</font>loopinterval -daemon<font color="#990000">.</font><font color="#009900">loopinterval</font><font color="#990000">=</font><font color="#993399">1</font> -$ <font color="#990000">.</font>/control keys daemon<font color="#990000">.</font><font color="#009900">loopinterval</font><font color="#990000">=</font><font color="#993399">10</font> <font color="#990000">|</font> grep daemon<font color="#990000">.</font>loopinterval -daemon<font color="#990000">.</font><font color="#009900">loopinterval</font><font color="#990000">=</font><font color="#993399">10</font> -$ <font color="#990000">.</font>/control start daemon<font color="#990000">.</font><font color="#009900">loopinterval</font><font color="#990000">=</font><font color="#993399">10</font><font color="#990000">;</font> sleep <font color="#993399">10</font><font color="#990000">;</font> tail -n <font color="#993399">2</font> log/perldaemon<font color="#990000">.</font>log -Starting daemon now<font color="#990000">...</font> -Mon Jun <font color="#993399">13</font> <font color="#993399">11</font><font color="#990000">:</font><font color="#993399">29</font><font color="#990000">:</font><font color="#993399">27</font> <font color="#993399">2011</font> <font color="#990000">(</font>PID <font color="#993399">2838</font><font color="#990000">):</font> Triggering PerlDaemonModules<font color="#990000">::</font>ExampleModule -<font color="#990000">(</font>last triggered before <font color="#993399">10</font><font color="#990000">.</font>002106s<font color="#990000">;</font> carry<font color="#990000">:</font> <font color="#993399">7</font><font color="#990000">.</font>002106s<font color="#990000">;</font> wanted interval<font color="#990000">:</font> 3s<font color="#990000">)</font> -Mon Jun <font color="#993399">13</font> <font color="#993399">11</font><font color="#990000">:</font><font color="#993399">29</font><font color="#990000">:</font><font color="#993399">27</font> <font color="#993399">2011</font> <font color="#990000">(</font>PID <font color="#993399">2838</font><font color="#990000">):</font> ExampleModule Test <font color="#993399">2</font> -$ <font color="#990000">.</font>/control stop -Stopping daemon now<font color="#990000">...</font> +<pre><font color="#ff0000">$ </font><font color="#F3E651">.</font><font color="#ff0000">/control keys </font><font color="#F3E651">|</font><font color="#ff0000"> grep daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font><font color="#F3E651">=</font><font color="#bb00ff">1</font> +<font color="#ff0000">$ </font><font color="#F3E651">.</font><font color="#ff0000">/control keys daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font><font color="#F3E651">=</font><font color="#bb00ff">10</font><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> grep daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font> +<font color="#ff0000">daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font><font color="#F3E651">=</font><font color="#bb00ff">10</font> +<font color="#ff0000">$ </font><font color="#F3E651">.</font><font color="#ff0000">/control start daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font><font color="#F3E651">=</font><font color="#bb00ff">10</font><font color="#F3E651">;</font><font color="#ff0000"> sleep </font><font color="#bb00ff">10</font><font color="#F3E651">;</font><font color="#ff0000"> tail -n </font><font color="#bb00ff">2</font><font color="#ff0000"> log/perldaemon</font><font color="#F3E651">.</font><font color="#ff0000">log</font> +<font color="#ff0000">Starting daemon now</font><font color="#F3E651">...</font> +<font color="#ff0000">Mon Jun </font><font color="#bb00ff">13</font><font color="#ff0000"> </font><font color="#bb00ff">11</font><font color="#F3E651">:</font><font color="#bb00ff">29</font><font color="#F3E651">:</font><font color="#bb00ff">27</font><font color="#ff0000"> </font><font color="#bb00ff">2011</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">PID </font><font color="#bb00ff">2838</font><font color="#F3E651">):</font><font color="#ff0000"> Triggering PerlDaemonModules</font><font color="#F3E651">::</font><font color="#ff0000">ExampleModule </font> +<font color="#F3E651">(</font><font color="#ff0000">last triggered before </font><font color="#bb00ff">10</font><font color="#F3E651">.</font><font color="#ff0000">002106s</font><font color="#F3E651">;</font><font color="#ff0000"> carry</font><font color="#F3E651">:</font><font color="#ff0000"> </font><font color="#bb00ff">7</font><font color="#F3E651">.</font><font color="#ff0000">002106s</font><font color="#F3E651">;</font><font color="#ff0000"> wanted interval</font><font color="#F3E651">:</font><font color="#ff0000"> 3s</font><font color="#F3E651">)</font> +<font color="#ff0000">Mon Jun </font><font color="#bb00ff">13</font><font color="#ff0000"> </font><font color="#bb00ff">11</font><font color="#F3E651">:</font><font color="#bb00ff">29</font><font color="#F3E651">:</font><font color="#bb00ff">27</font><font color="#ff0000"> </font><font color="#bb00ff">2011</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">PID </font><font color="#bb00ff">2838</font><font color="#F3E651">):</font><font color="#ff0000"> ExampleModule Test </font><font color="#bb00ff">2</font> +<font color="#ff0000">$ </font><font color="#F3E651">.</font><font color="#ff0000">/control stop</font> +<font color="#ff0000">Stopping daemon now</font><font color="#F3E651">...</font> </pre> <br /> <span>If you want to change that property forever, either edit perldaemon.conf or do this:</span><br /> @@ -114,7 +114,7 @@ Stopping daemon now<font color="#990000">...</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ <font color="#990000">.</font>/control keys daemon<font color="#990000">.</font><font color="#009900">loopinterval</font><font color="#990000">=</font><font color="#993399">10</font> <font color="#990000">></font> new<font color="#990000">.</font>conf<font color="#990000">;</font> mv new<font color="#990000">.</font>conf conf/perldaemon<font color="#990000">.</font>conf +<pre><font color="#ff0000">$ </font><font color="#F3E651">.</font><font color="#ff0000">/control keys daemon</font><font color="#F3E651">.</font><font color="#ff0000">loopinterval</font><font color="#F3E651">=</font><font color="#bb00ff">10</font><font color="#ff0000"> </font><font color="#F3E651">></font><font color="#ff0000"> new</font><font color="#F3E651">.</font><font color="#ff0000">conf</font><font color="#F3E651">;</font><font color="#ff0000"> mv new</font><font color="#F3E651">.</font><font color="#ff0000">conf conf/perldaemon</font><font color="#F3E651">.</font><font color="#ff0000">conf</font> </pre> <br /> <h2 style='display: inline' id='HiReseventloop'>HiRes event loop</h2><br /> @@ -131,35 +131,35 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> PerlDaemonModules<font color="#990000">::</font>ExampleModule<font color="#990000">;</font> +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> PerlDaemonModules</font><font color="#F3E651">::</font><font color="#ff0000">ExampleModule</font><font color="#F3E651">;</font> -<b><font color="#0000FF">use</font></b> strict<font color="#990000">;</font> -<b><font color="#0000FF">use</font></b> warnings<font color="#990000">;</font> +<b><font color="#ffffff">use</font></b><font color="#ff0000"> strict</font><font color="#F3E651">;</font> +<b><font color="#ffffff">use</font></b><font color="#ff0000"> warnings</font><font color="#F3E651">;</font> -<b><font color="#0000FF">sub</font></b> <b><font color="#000000">new</font></b> <font color="#990000">(</font>$$$<font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">my</font></b> <font color="#990000">(</font><font color="#009900">$class</font><font color="#990000">,</font> <font color="#009900">$conf</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#009900">@_</font><font color="#990000">;</font> +<b><font color="#ffffff">sub</font></b><font color="#ff0000"> </font><font color="#7bc710">new</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">$$$</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">$class</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$conf</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#ff0000">@_</font><font color="#F3E651">;</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$self</font> <font color="#990000">=</font> <b><font color="#0000FF">bless</font></b> <font color="#FF0000">{</font> conf <font color="#990000">=></font> <font color="#009900">$conf</font> <font color="#FF0000">}</font><font color="#990000">,</font> <font color="#009900">$class</font><font color="#990000">;</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$self</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#ffffff">bless</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font><font color="#ff0000"> conf </font><font color="#F3E651">=></font><font color="#ff0000"> </font><font color="#ff0000">$conf</font><font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$class</font><font color="#F3E651">;</font> - <i><font color="#9A1900"># Store some private module stuff</font></i> - <font color="#009900">$self</font><font color="#990000">-></font><font color="#FF0000">{</font>counter<font color="#FF0000">}</font> <font color="#990000">=</font> <font color="#993399">0</font><font color="#990000">;</font> +<font color="#ff0000"> </font><i><font color="#ababab"># Store some private module stuff</font></i> +<font color="#ff0000"> </font><font color="#ff0000">$self</font><font color="#F3E651">-></font><font color="#F3E651">{</font><font color="#ff0000">counter</font><font color="#F3E651">}</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font> - <b><font color="#0000FF">return</font></b> <font color="#009900">$self</font><font color="#990000">;</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#ff0000">$self</font><font color="#F3E651">;</font> +<font color="#F3E651">}</font> -<i><font color="#9A1900"># Runs periodically in a loop (set interval in perldaemon.conf)</font></i> -<b><font color="#0000FF">sub</font></b> <b><font color="#0000FF">do</font></b> <font color="#990000">(</font>$<font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$self</font> <font color="#990000">=</font> <b><font color="#0000FF">shift</font></b><font color="#990000">;</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$conf</font> <font color="#990000">=</font> <font color="#009900">$self</font><font color="#990000">-></font><font color="#FF0000">{</font>conf<font color="#FF0000">}</font><font color="#990000">;</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$logger</font> <font color="#990000">=</font> <font color="#009900">$conf</font><font color="#990000">-></font><font color="#FF0000">{</font>logger<font color="#FF0000">}</font><font color="#990000">;</font> +<i><font color="#ababab"># Runs periodically in a loop (set interval in perldaemon.conf)</font></i> +<b><font color="#ffffff">sub</font></b><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">$</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$self</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b><font color="#F3E651">;</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$conf</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#ff0000">$self</font><font color="#F3E651">-></font><font color="#F3E651">{</font><font color="#ff0000">conf</font><font color="#F3E651">}</font><font color="#F3E651">;</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$logger</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#ff0000">$conf</font><font color="#F3E651">-></font><font color="#F3E651">{</font><font color="#ff0000">logger</font><font color="#F3E651">}</font><font color="#F3E651">;</font> - <i><font color="#9A1900"># Calculate some private module stuff</font></i> - <b><font color="#0000FF">my</font></b> <font color="#009900">$count</font> <font color="#990000">=</font> <font color="#990000">++</font><font color="#009900">$self</font><font color="#990000">-></font><font color="#FF0000">{</font>counter<font color="#FF0000">}</font><font color="#990000">;</font> +<font color="#ff0000"> </font><i><font color="#ababab"># Calculate some private module stuff</font></i> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$count</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">++</font><font color="#ff0000">$self</font><font color="#F3E651">-></font><font color="#F3E651">{</font><font color="#ff0000">counter</font><font color="#F3E651">}</font><font color="#F3E651">;</font> - <font color="#009900">$logger</font><font color="#990000">-></font><b><font color="#000000">logmsg</font></b><font color="#990000">(</font><font color="#FF0000">"ExampleModule Test $count"</font><font color="#990000">);</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><font color="#ff0000">$logger</font><font color="#F3E651">-></font><font color="#7bc710">logmsg</font><font color="#F3E651">(</font><font color="#bb00ff">"ExampleModule Test $count"</font><font color="#F3E651">);</font> +<font color="#F3E651">}</font> -<font color="#993399">1</font><font color="#990000">;</font> +<font color="#bb00ff">1</font><font color="#F3E651">;</font> </pre> <br /> <h3 style='display: inline' id='Yourownmodule'>Your own module</h3><br /> @@ -170,11 +170,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre> cd <font color="#990000">.</font>/lib/PerlDaemonModules<font color="#990000">/</font> - cp ExampleModule<font color="#990000">.</font>pm YourModule<font color="#990000">.</font>pm - vi YourModule<font color="#990000">.</font>pm - cd - - <font color="#990000">.</font>/bin/perldaemon restart <font color="#990000">(</font>or shortcurt <font color="#990000">.</font>/control restart<font color="#990000">)</font> +<pre><font color="#ff0000"> cd </font><font color="#F3E651">.</font><font color="#ff0000">/lib/PerlDaemonModules</font><font color="#F3E651">/</font> +<font color="#ff0000"> cp ExampleModule</font><font color="#F3E651">.</font><font color="#ff0000">pm YourModule</font><font color="#F3E651">.</font><font color="#ff0000">pm</font> +<font color="#ff0000"> vi YourModule</font><font color="#F3E651">.</font><font color="#ff0000">pm</font> +<font color="#ff0000"> cd -</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/bin/perldaemon restart </font><font color="#F3E651">(</font><font color="#ff0000">or shortcurt </font><font color="#F3E651">.</font><font color="#ff0000">/control restart</font><font color="#F3E651">)</font> </pre> <br /> <span>Now watch <span class='inlinecode'>./log/perldaemon.log</span> closely. It is a good practice to test your modules in 'foreground mode' (see above how to do that).</span><br /> diff --git a/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.html b/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.html index 35725876..dd5e921d 100644 --- a/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.html +++ b/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.html @@ -24,47 +24,47 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#include <stdio.h></font></i> +<pre><i><font color="#ababab">#include <stdio.h></font></i> -<i><font color="#9A1900">#define $arg function_argument</font></i> -<i><font color="#9A1900">#define my int</font></i> -<i><font color="#9A1900">#define sub int</font></i> -<i><font color="#9A1900">#define BEGIN int main(void)</font></i> +<i><font color="#ababab">#define $arg function_argument</font></i> +<i><font color="#ababab">#define my int</font></i> +<i><font color="#ababab">#define sub int</font></i> +<i><font color="#ababab">#define BEGIN int main(void)</font></i> -<b><font color="#0000FF">my</font></b> <font color="#009900">$arg</font><font color="#990000">;</font> +<b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$arg</font><font color="#F3E651">;</font> -<b><font color="#0000FF">sub</font></b> <b><font color="#000000">hello</font></b><font color="#990000">()</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">printf</font></b><font color="#990000">(</font><font color="#FF0000">"Hello, welcome to the Fibonacci Numbers!\n"</font><font color="#990000">);</font> - <b><font color="#0000FF">printf</font></b><font color="#990000">(</font><font color="#FF0000">"This program is all, valid C and C++ and Perl and Raku code!\n"</font><font color="#990000">);</font> - <b><font color="#0000FF">printf</font></b><font color="#990000">(</font><font color="#FF0000">"It calculates all fibonacci numbers from 0 to 9!\n\n"</font><font color="#990000">);</font> - <b><font color="#0000FF">return</font></b> <font color="#993399">0</font><font color="#990000">;</font> -<font color="#FF0000">}</font> +<b><font color="#ffffff">sub</font></b><font color="#ff0000"> </font><font color="#7bc710">hello</font><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">printf</font></b><font color="#F3E651">(</font><font color="#bb00ff">"Hello, welcome to the Fibonacci Numbers!\n"</font><font color="#F3E651">);</font> +<font color="#ff0000"> </font><b><font color="#ffffff">printf</font></b><font color="#F3E651">(</font><font color="#bb00ff">"This program is all, valid C and C++ and Perl and Raku code!\n"</font><font color="#F3E651">);</font> +<font color="#ff0000"> </font><b><font color="#ffffff">printf</font></b><font color="#F3E651">(</font><font color="#bb00ff">"It calculates all fibonacci numbers from 0 to 9!\n\n"</font><font color="#F3E651">);</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font> +<font color="#F3E651">}</font> -<b><font color="#0000FF">sub</font></b> <b><font color="#000000">fibonacci</font></b><font color="#990000">()</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$n</font> <font color="#990000">=</font> <font color="#009900">$arg</font><font color="#990000">;</font> +<b><font color="#ffffff">sub</font></b><font color="#ff0000"> </font><font color="#7bc710">fibonacci</font><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$n</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#ff0000">$arg</font><font color="#F3E651">;</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">(</font><font color="#009900">$n</font> <font color="#990000"><</font> <font color="#993399">2</font><font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">return</font></b> <font color="#009900">$n</font><font color="#990000">;</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">$n</font><font color="#ff0000"> </font><font color="#F3E651"><</font><font color="#ff0000"> </font><font color="#bb00ff">2</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#ff0000">$n</font><font color="#F3E651">;</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <font color="#009900">$arg</font> <font color="#990000">=</font> <font color="#009900">$n</font> <font color="#990000">-</font> <font color="#993399">1</font><font color="#990000">;</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$fib1</font> <font color="#990000">=</font> <b><font color="#000000">fibonacci</font></b><font color="#990000">();</font> - <font color="#009900">$arg</font> <font color="#990000">=</font> <font color="#009900">$n</font> <font color="#990000">-</font> <font color="#993399">2</font><font color="#990000">;</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$fib2</font> <font color="#990000">=</font> <b><font color="#000000">fibonacci</font></b><font color="#990000">();</font> +<font color="#ff0000"> </font><font color="#ff0000">$arg</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#ff0000">$n</font><font color="#ff0000"> </font><font color="#F3E651">-</font><font color="#ff0000"> </font><font color="#bb00ff">1</font><font color="#F3E651">;</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$fib1</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">fibonacci</font><font color="#F3E651">();</font> +<font color="#ff0000"> </font><font color="#ff0000">$arg</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#ff0000">$n</font><font color="#ff0000"> </font><font color="#F3E651">-</font><font color="#ff0000"> </font><font color="#bb00ff">2</font><font color="#F3E651">;</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$fib2</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">fibonacci</font><font color="#F3E651">();</font> - <b><font color="#0000FF">return</font></b> <font color="#009900">$fib1</font> <font color="#990000">+</font> <font color="#009900">$fib2</font><font color="#990000">;</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#ff0000">$fib1</font><font color="#ff0000"> </font><font color="#F3E651">+</font><font color="#ff0000"> </font><font color="#ff0000">$fib2</font><font color="#F3E651">;</font> +<font color="#F3E651">}</font> -BEGIN <font color="#FF0000">{</font> - <b><font color="#000000">hello</font></b><font color="#990000">();</font> - <b><font color="#0000FF">my</font></b> <font color="#009900">$i</font> <font color="#990000">=</font> <font color="#993399">0</font><font color="#990000">;</font> +<font color="#ff0000">BEGIN </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#7bc710">hello</font><font color="#F3E651">();</font> +<font color="#ff0000"> </font><b><font color="#ffffff">my</font></b><font color="#ff0000"> </font><font color="#ff0000">$i</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font> - <b><font color="#0000FF">while</font></b> <font color="#990000">(</font><font color="#009900">$i</font> <font color="#990000"><=</font> <font color="#993399">10</font><font color="#990000">)</font> <font color="#FF0000">{</font> - <font color="#009900">$arg</font> <font color="#990000">=</font> <font color="#009900">$i</font><font color="#990000">;</font> - <b><font color="#0000FF">printf</font></b><font color="#990000">(</font><font color="#FF0000">"fib(%d) = %d\n"</font><font color="#990000">,</font> <font color="#009900">$i</font><font color="#990000">,</font> <b><font color="#000000">fibonacci</font></b><font color="#990000">());</font> - <font color="#009900">$i</font><font color="#990000">++;</font> - <font color="#FF0000">}</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">while</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">$i</font><font color="#ff0000"> </font><font color="#F3E651"><=</font><font color="#ff0000"> </font><font color="#bb00ff">10</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">$arg</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#ff0000">$i</font><font color="#F3E651">;</font> +<font color="#ff0000"> </font><b><font color="#ffffff">printf</font></b><font color="#F3E651">(</font><font color="#bb00ff">"fib(%d) = %d\n"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">$i</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#7bc710">fibonacci</font><font color="#F3E651">());</font> +<font color="#ff0000"> </font><font color="#ff0000">$i</font><font color="#F3E651">++;</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#F3E651">}</font> </pre> <br /> <span>You can find the full source code at GitHub:</span><br /> @@ -77,41 +77,41 @@ BEGIN <font color="#FF0000">{</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> gcc fibonacci<font color="#990000">.</font>pl<font color="#990000">.</font>raku<font color="#990000">.</font>c -o fibonacci -<font color="#990000">%</font> <font color="#990000">.</font>/fibonacci -Hello<font color="#990000">,</font> welcome to the Fibonacci Numbers<font color="#990000">!</font> -This program is all<font color="#990000">,</font> valid C and C<font color="#990000">++</font> and Perl and Raku code<font color="#990000">!</font> -It calculates all fibonacci numbers from <font color="#993399">0</font> to <font color="#993399">9</font><font color="#990000">!</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> gcc fibonacci</font><font color="#F3E651">.</font><font color="#ff0000">pl</font><font color="#F3E651">.</font><font color="#ff0000">raku</font><font color="#F3E651">.</font><font color="#ff0000">c -o fibonacci</font> +<font color="#F3E651">%</font><font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/fibonacci</font> +<font color="#ff0000">Hello</font><font color="#F3E651">,</font><font color="#ff0000"> welcome to the Fibonacci Numbers</font><font color="#F3E651">!</font> +<font color="#ff0000">This program is all</font><font color="#F3E651">,</font><font color="#ff0000"> valid C and C</font><font color="#F3E651">++</font><font color="#ff0000"> and Perl and Raku code</font><font color="#F3E651">!</font> +<font color="#ff0000">It calculates all fibonacci numbers from </font><font color="#bb00ff">0</font><font color="#ff0000"> to </font><font color="#bb00ff">9</font><font color="#F3E651">!</font> -fib<font color="#990000">(</font><font color="#993399">0</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">0</font> -fib<font color="#990000">(</font><font color="#993399">1</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">2</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">3</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">2</font> -fib<font color="#990000">(</font><font color="#993399">4</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">3</font> -fib<font color="#990000">(</font><font color="#993399">5</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">5</font> -fib<font color="#990000">(</font><font color="#993399">6</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">8</font> -fib<font color="#990000">(</font><font color="#993399">7</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">13</font> -fib<font color="#990000">(</font><font color="#993399">8</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">21</font> -fib<font color="#990000">(</font><font color="#993399">9</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">34</font> -fib<font color="#990000">(</font><font color="#993399">10</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">55</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">0</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">1</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">2</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">3</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">4</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">3</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">5</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">5</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">6</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">8</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">7</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">13</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">8</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">21</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">9</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">34</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">10</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">55</font> -<font color="#990000">%</font> g<font color="#990000">++</font> fibonacci<font color="#990000">.</font>pl<font color="#990000">.</font>raku<font color="#990000">.</font>c -o fibonacci -<font color="#990000">%</font> <font color="#990000">.</font>/fibonacci -Hello<font color="#990000">,</font> welcome to the Fibonacci Numbers<font color="#990000">!</font> -This program is all<font color="#990000">,</font> valid C and C<font color="#990000">++</font> and Perl and Raku code<font color="#990000">!</font> -It calculates all fibonacci numbers from <font color="#993399">0</font> to <font color="#993399">9</font><font color="#990000">!</font> +<font color="#F3E651">%</font><font color="#ff0000"> g</font><font color="#F3E651">++</font><font color="#ff0000"> fibonacci</font><font color="#F3E651">.</font><font color="#ff0000">pl</font><font color="#F3E651">.</font><font color="#ff0000">raku</font><font color="#F3E651">.</font><font color="#ff0000">c -o fibonacci</font> +<font color="#F3E651">%</font><font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/fibonacci</font> +<font color="#ff0000">Hello</font><font color="#F3E651">,</font><font color="#ff0000"> welcome to the Fibonacci Numbers</font><font color="#F3E651">!</font> +<font color="#ff0000">This program is all</font><font color="#F3E651">,</font><font color="#ff0000"> valid C and C</font><font color="#F3E651">++</font><font color="#ff0000"> and Perl and Raku code</font><font color="#F3E651">!</font> +<font color="#ff0000">It calculates all fibonacci numbers from </font><font color="#bb00ff">0</font><font color="#ff0000"> to </font><font color="#bb00ff">9</font><font color="#F3E651">!</font> -fib<font color="#990000">(</font><font color="#993399">0</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">0</font> -fib<font color="#990000">(</font><font color="#993399">1</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">2</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">3</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">2</font> -fib<font color="#990000">(</font><font color="#993399">4</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">3</font> -fib<font color="#990000">(</font><font color="#993399">5</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">5</font> -fib<font color="#990000">(</font><font color="#993399">6</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">8</font> -fib<font color="#990000">(</font><font color="#993399">7</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">13</font> -fib<font color="#990000">(</font><font color="#993399">8</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">21</font> -fib<font color="#990000">(</font><font color="#993399">9</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">34</font> -fib<font color="#990000">(</font><font color="#993399">10</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">55</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">0</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">1</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">2</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">3</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">4</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">3</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">5</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">5</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">6</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">8</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">7</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">13</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">8</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">21</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">9</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">34</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">10</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">55</font> </pre> <br /> <h3 style='display: inline' id='LetsrunitwithPerlandRaku'>Let's run it with Perl and Raku</h3><br /> @@ -120,39 +120,39 @@ fib<font color="#990000">(</font><font color="#993399">10</font><font color="#99 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> perl fibonacci<font color="#990000">.</font>pl<font color="#990000">.</font>raku<font color="#990000">.</font>c -Hello<font color="#990000">,</font> welcome to the Fibonacci Numbers<font color="#990000">!</font> -This program is all<font color="#990000">,</font> valid C and C<font color="#990000">++</font> and Perl and Raku code<font color="#990000">!</font> -It calculates all fibonacci numbers from <font color="#993399">0</font> to <font color="#993399">9</font><font color="#990000">!</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> perl fibonacci</font><font color="#F3E651">.</font><font color="#ff0000">pl</font><font color="#F3E651">.</font><font color="#ff0000">raku</font><font color="#F3E651">.</font><font color="#ff0000">c</font> +<font color="#ff0000">Hello</font><font color="#F3E651">,</font><font color="#ff0000"> welcome to the Fibonacci Numbers</font><font color="#F3E651">!</font> +<font color="#ff0000">This program is all</font><font color="#F3E651">,</font><font color="#ff0000"> valid C and C</font><font color="#F3E651">++</font><font color="#ff0000"> and Perl and Raku code</font><font color="#F3E651">!</font> +<font color="#ff0000">It calculates all fibonacci numbers from </font><font color="#bb00ff">0</font><font color="#ff0000"> to </font><font color="#bb00ff">9</font><font color="#F3E651">!</font> -fib<font color="#990000">(</font><font color="#993399">0</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">0</font> -fib<font color="#990000">(</font><font color="#993399">1</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">2</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">3</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">2</font> -fib<font color="#990000">(</font><font color="#993399">4</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">3</font> -fib<font color="#990000">(</font><font color="#993399">5</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">5</font> -fib<font color="#990000">(</font><font color="#993399">6</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">8</font> -fib<font color="#990000">(</font><font color="#993399">7</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">13</font> -fib<font color="#990000">(</font><font color="#993399">8</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">21</font> -fib<font color="#990000">(</font><font color="#993399">9</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">34</font> -fib<font color="#990000">(</font><font color="#993399">10</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">55</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">0</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">1</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">2</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">3</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">4</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">3</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">5</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">5</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">6</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">8</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">7</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">13</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">8</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">21</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">9</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">34</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">10</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">55</font> -<font color="#990000">%</font> raku fibonacci<font color="#990000">.</font>pl<font color="#990000">.</font>raku<font color="#990000">.</font>c -Hello<font color="#990000">,</font> welcome to the Fibonacci Numbers<font color="#990000">!</font> -This program is all<font color="#990000">,</font> valid C and C<font color="#990000">++</font> and Perl and Raku code<font color="#990000">!</font> -It calculates all fibonacci numbers from <font color="#993399">0</font> to <font color="#993399">9</font><font color="#990000">!</font> +<font color="#F3E651">%</font><font color="#ff0000"> raku fibonacci</font><font color="#F3E651">.</font><font color="#ff0000">pl</font><font color="#F3E651">.</font><font color="#ff0000">raku</font><font color="#F3E651">.</font><font color="#ff0000">c</font> +<font color="#ff0000">Hello</font><font color="#F3E651">,</font><font color="#ff0000"> welcome to the Fibonacci Numbers</font><font color="#F3E651">!</font> +<font color="#ff0000">This program is all</font><font color="#F3E651">,</font><font color="#ff0000"> valid C and C</font><font color="#F3E651">++</font><font color="#ff0000"> and Perl and Raku code</font><font color="#F3E651">!</font> +<font color="#ff0000">It calculates all fibonacci numbers from </font><font color="#bb00ff">0</font><font color="#ff0000"> to </font><font color="#bb00ff">9</font><font color="#F3E651">!</font> -fib<font color="#990000">(</font><font color="#993399">0</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">0</font> -fib<font color="#990000">(</font><font color="#993399">1</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">2</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">1</font> -fib<font color="#990000">(</font><font color="#993399">3</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">2</font> -fib<font color="#990000">(</font><font color="#993399">4</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">3</font> -fib<font color="#990000">(</font><font color="#993399">5</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">5</font> -fib<font color="#990000">(</font><font color="#993399">6</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">8</font> -fib<font color="#990000">(</font><font color="#993399">7</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">13</font> -fib<font color="#990000">(</font><font color="#993399">8</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">21</font> -fib<font color="#990000">(</font><font color="#993399">9</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">34</font> -fib<font color="#990000">(</font><font color="#993399">10</font><font color="#990000">)</font> <font color="#990000">=</font> <font color="#993399">55</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">0</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">1</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">2</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">3</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">4</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">3</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">5</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">5</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">6</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">8</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">7</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">13</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">8</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">21</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">9</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">34</font> +<font color="#ff0000">fib</font><font color="#F3E651">(</font><font color="#bb00ff">10</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">55</font> </pre> <br /> <span>It's entertaining to play with :-).</span><br /> diff --git a/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.html b/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.html index 7736e050..37989842 100644 --- a/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.html +++ b/gemfeed/2015-12-05-run-debian-on-your-phone-with-debroid.html @@ -43,24 +43,24 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>sudo dnf install debootstrap -<i><font color="#9A1900"># 5g</font></i> -dd <b><font color="#0000FF">if</font></b><font color="#990000">=</font>/dev/zero <font color="#009900">of</font><font color="#990000">=</font>jessie<font color="#990000">.</font>img <font color="#009900">bs</font><font color="#990000">=</font><font color="#009900">$[</font> <font color="#993399">1024</font> <font color="#990000">*</font> <font color="#993399">1024</font> <font color="#990000">]</font> <font color="#990000">\</font> - <font color="#009900">count</font><font color="#990000">=</font><font color="#009900">$[</font> <font color="#993399">1024</font> <font color="#990000">*</font> <font color="#993399">5</font> <font color="#990000">]</font> +<pre><font color="#ff0000">sudo dnf install debootstrap</font> +<i><font color="#ababab"># 5g</font></i> +<font color="#ff0000">dd </font><b><font color="#ffffff">if</font></b><font color="#F3E651">=</font><font color="#ff0000">/dev/zero </font><font color="#ff0000">of</font><font color="#F3E651">=</font><font color="#ff0000">jessie</font><font color="#F3E651">.</font><font color="#ff0000">img </font><font color="#ff0000">bs</font><font color="#F3E651">=</font><font color="#ff0000">$[</font><font color="#ff0000"> </font><font color="#bb00ff">1024</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000"> </font><font color="#bb00ff">1024</font><font color="#ff0000"> </font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#ff0000">count</font><font color="#F3E651">=</font><font color="#ff0000">$[</font><font color="#ff0000"> </font><font color="#bb00ff">1024</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000"> </font><font color="#bb00ff">5</font><font color="#ff0000"> </font><font color="#F3E651">]</font> -<i><font color="#9A1900"># Show used loop devices</font></i> -sudo losetup -f -<i><font color="#9A1900"># Store the next free one to $loop</font></i> -<font color="#009900">loop</font><font color="#990000">=</font>loopN -sudo losetup /dev<font color="#990000">/</font><font color="#009900">$loop</font> jessie<font color="#990000">.</font>img +<i><font color="#ababab"># Show used loop devices</font></i> +<font color="#ff0000">sudo losetup -f</font> +<i><font color="#ababab"># Store the next free one to $loop</font></i> +<font color="#ff0000">loop</font><font color="#F3E651">=</font><font color="#ff0000">loopN</font> +<font color="#ff0000">sudo losetup /dev</font><font color="#F3E651">/</font><font color="#ff0000">$loop</font><font color="#ff0000"> jessie</font><font color="#F3E651">.</font><font color="#ff0000">img</font> -mkdir jessie -sudo mkfs<font color="#990000">.</font>ext4 /dev<font color="#990000">/</font><font color="#009900">$loop</font> -sudo mount /dev<font color="#990000">/</font><font color="#009900">$loop</font> jessie -sudo debootstrap --foreign --variant<font color="#990000">=</font>minbase <font color="#990000">\</font> - --arch armel jessie jessie<font color="#990000">/</font> <font color="#990000">\</font> - http<font color="#990000">:</font>//http<font color="#990000">.</font>debian<font color="#990000">.</font>net/debian -sudo umount jessie +<font color="#ff0000">mkdir jessie</font> +<font color="#ff0000">sudo mkfs</font><font color="#F3E651">.</font><font color="#ff0000">ext4 /dev</font><font color="#F3E651">/</font><font color="#ff0000">$loop</font> +<font color="#ff0000">sudo mount /dev</font><font color="#F3E651">/</font><font color="#ff0000">$loop</font><font color="#ff0000"> jessie</font> +<font color="#ff0000">sudo debootstrap --foreign --variant</font><font color="#F3E651">=</font><font color="#ff0000">minbase </font><font color="#F3E651">\</font> +<font color="#ff0000"> --arch armel jessie jessie</font><font color="#F3E651">/</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> http</font><font color="#F3E651">:</font><font color="#ff0000">//http</font><font color="#F3E651">.</font><font color="#ff0000">debian</font><font color="#F3E651">.</font><font color="#ff0000">net/debian</font> +<font color="#ff0000">sudo umount jessie</font> </pre> <br /> <h3 style='display: inline' id='CopyDebianimagetothephone'>Copy Debian image to the phone</h3><br /> @@ -71,42 +71,42 @@ sudo umount jessie by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>adb root <font color="#990000">&&</font> adb wait-for-device <font color="#990000">&&</font> adb shell -mkdir -p /storage/sdcard<font color="#993399">1</font>/Linux/jessie -<b><font color="#0000FF">exit</font></b> +<pre><font color="#ff0000">adb root </font><font color="#F3E651">&&</font><font color="#ff0000"> adb wait-for-device </font><font color="#F3E651">&&</font><font color="#ff0000"> adb shell</font> +<font color="#ff0000">mkdir -p /storage/sdcard</font><font color="#bb00ff">1</font><font color="#ff0000">/Linux/jessie</font> +<b><font color="#ffffff">exit</font></b> -<i><font color="#9A1900"># Sparse image problem, may be too big for copying otherwise</font></i> -gzip jessie<font color="#990000">.</font>img -<i><font color="#9A1900"># Copy over</font></i> -adb push jessie<font color="#990000">.</font>img<font color="#990000">.</font>gz /storage/sdcard<font color="#993399">1</font>/Linux/jessie<font color="#990000">.</font>img<font color="#990000">.</font>gz -adb shell -cd /storage/sdcard<font color="#993399">1</font>/Linux -gunzip jessie<font color="#990000">.</font>img<font color="#990000">.</font>gz +<i><font color="#ababab"># Sparse image problem, may be too big for copying otherwise</font></i> +<font color="#ff0000">gzip jessie</font><font color="#F3E651">.</font><font color="#ff0000">img</font> +<i><font color="#ababab"># Copy over</font></i> +<font color="#ff0000">adb push jessie</font><font color="#F3E651">.</font><font color="#ff0000">img</font><font color="#F3E651">.</font><font color="#ff0000">gz /storage/sdcard</font><font color="#bb00ff">1</font><font color="#ff0000">/Linux/jessie</font><font color="#F3E651">.</font><font color="#ff0000">img</font><font color="#F3E651">.</font><font color="#ff0000">gz</font> +<font color="#ff0000">adb shell</font> +<font color="#ff0000">cd /storage/sdcard</font><font color="#bb00ff">1</font><font color="#ff0000">/Linux</font> +<font color="#ff0000">gunzip jessie</font><font color="#F3E651">.</font><font color="#ff0000">img</font><font color="#F3E651">.</font><font color="#ff0000">gz</font> -<i><font color="#9A1900"># Show used loop devices</font></i> -losetup -f -<i><font color="#9A1900"># Store the next free one to $loop</font></i> -<font color="#009900">loop</font><font color="#990000">=</font>loopN +<i><font color="#ababab"># Show used loop devices</font></i> +<font color="#ff0000">losetup -f</font> +<i><font color="#ababab"># Store the next free one to $loop</font></i> +<font color="#ff0000">loop</font><font color="#F3E651">=</font><font color="#ff0000">loopN</font> -<i><font color="#9A1900"># Use the next free one (replace the loop number)</font></i> -losetup /dev/block<font color="#990000">/</font><font color="#009900">$loop</font> <font color="#009900">$(pwd)</font>/jessie<font color="#990000">.</font>img -mount -t ext4 /dev/block<font color="#990000">/</font><font color="#009900">$loop</font> <font color="#009900">$(pwd)</font>/jessie +<i><font color="#ababab"># Use the next free one (replace the loop number)</font></i> +<font color="#ff0000">losetup /dev/block</font><font color="#F3E651">/</font><font color="#ff0000">$loop</font><font color="#ff0000"> </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie</font><font color="#F3E651">.</font><font color="#ff0000">img</font> +<font color="#ff0000">mount -t ext4 /dev/block</font><font color="#F3E651">/</font><font color="#ff0000">$loop</font><font color="#ff0000"> </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie</font> -<i><font color="#9A1900"># Bind-Mound proc, dev, sys`</font></i> -busybox mount --bind /proc <font color="#009900">$(pwd)</font>/jessie/proc -busybox mount --bind /dev <font color="#009900">$(pwd)</font>/jessie/dev -busybox mount --bind /dev/pts <font color="#009900">$(pwd)</font>/jessie/dev/pts -busybox mount --bind /sys <font color="#009900">$(pwd)</font>/jessie/sys +<i><font color="#ababab"># Bind-Mound proc, dev, sys`</font></i> +<font color="#ff0000">busybox mount --bind /proc </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie/proc</font> +<font color="#ff0000">busybox mount --bind /dev </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie/dev</font> +<font color="#ff0000">busybox mount --bind /dev/pts </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie/dev/pts</font> +<font color="#ff0000">busybox mount --bind /sys </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie/sys</font> -<i><font color="#9A1900"># Bind-Mound the rest of Android</font></i> -mkdir -p <font color="#009900">$(pwd)</font>/jessie/storage/sdcard{<font color="#993399">0</font><font color="#990000">,</font><font color="#993399">1</font>} -busybox mount --bind /storage/emulated <font color="#990000">\</font> - <font color="#009900">$(pwd)</font>/jessie/storage/sdcard<font color="#993399">0</font> -busybox mount --bind /storage/sdcard<font color="#993399">1</font> <font color="#990000">\</font> - <font color="#009900">$(pwd)</font>/jessie/storage/sdcard<font color="#993399">1</font> +<i><font color="#ababab"># Bind-Mound the rest of Android</font></i> +<font color="#ff0000">mkdir -p </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie/storage/sdcard{</font><font color="#bb00ff">0</font><font color="#F3E651">,</font><font color="#bb00ff">1</font><font color="#ff0000">}</font> +<font color="#ff0000">busybox mount --bind /storage/emulated </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie/storage/sdcard</font><font color="#bb00ff">0</font> +<font color="#ff0000">busybox mount --bind /storage/sdcard</font><font color="#bb00ff">1</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie/storage/sdcard</font><font color="#bb00ff">1</font> -<i><font color="#9A1900"># Check mounts</font></i> -mount <font color="#990000">|</font> grep jessie +<i><font color="#ababab"># Check mounts</font></i> +<font color="#ff0000">mount </font><font color="#F3E651">|</font><font color="#ff0000"> grep jessie</font> </pre> <br /> <h3 style='display: inline' id='Seconddebootstrapstage'>Second debootstrap stage</h3><br /> @@ -117,11 +117,11 @@ mount <font color="#990000">|</font> grep jessie by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>chroot <font color="#009900">$(pwd)</font>/jessie /bin/bash -l -<b><font color="#0000FF">export</font></b> <font color="#009900">PATH</font><font color="#990000">=</font>/bin<font color="#990000">:</font>/usr/bin<font color="#990000">:</font>/usr/local/bin<font color="#990000">:</font>/sbin<font color="#990000">:</font>/usr/sbin<font color="#990000">:</font>/usr/local/sbin -/debootstrap/debootstrap --second-stage -<b><font color="#0000FF">exit</font></b> <i><font color="#9A1900"># Leave chroot</font></i> -<b><font color="#0000FF">exit</font></b> <i><font color="#9A1900"># Leave adb shell</font></i> +<pre><font color="#ff0000">chroot </font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/jessie /bin/bash -l</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">PATH</font><font color="#F3E651">=</font><font color="#ff0000">/bin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/bin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/local/bin</font><font color="#F3E651">:</font><font color="#ff0000">/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/local/sbin</font> +<font color="#ff0000">/debootstrap/debootstrap --second-stage</font> +<b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><i><font color="#ababab"># Leave chroot</font></i> +<b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><i><font color="#ababab"># Leave adb shell</font></i> </pre> <br /> <h3 style='display: inline' id='Setupofvariousscripts'>Setup of various scripts</h3><br /> @@ -132,36 +132,36 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Install script jessie.sh</font></i> -adb push storage/sdcard<font color="#993399">1</font>/Linux/jessie<font color="#990000">.</font>sh /storage/sdcard/Linux/jessie<font color="#990000">.</font>sh -adb shell -cd /storage/sdcard<font color="#993399">1</font>/Linux -sh jessie<font color="#990000">.</font>sh enter +<pre><i><font color="#ababab"># Install script jessie.sh</font></i> +<font color="#ff0000">adb push storage/sdcard</font><font color="#bb00ff">1</font><font color="#ff0000">/Linux/jessie</font><font color="#F3E651">.</font><font color="#ff0000">sh /storage/sdcard/Linux/jessie</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000">adb shell</font> +<font color="#ff0000">cd /storage/sdcard</font><font color="#bb00ff">1</font><font color="#ff0000">/Linux</font> +<font color="#ff0000">sh jessie</font><font color="#F3E651">.</font><font color="#ff0000">sh enter</font> -<i><font color="#9A1900"># Bashrc</font></i> -cat <font color="#990000"><<</font>END <font color="#990000">>~/.</font>bashrc -<b><font color="#0000FF">export</font></b> <font color="#009900">PATH</font><font color="#990000">=</font>/usr/local/sbin<font color="#990000">:</font>/usr/local/bin<font color="#990000">:</font>/usr/sbin<font color="#990000">:</font>/usr/bin<font color="#990000">:</font>/sbin<font color="#990000">:</font>/bin<font color="#990000">:</font><font color="#009900">$PATH</font> -<b><font color="#0000FF">export</font></b> <font color="#009900">EDITOR</font><font color="#990000">=</font>vim -hostname <font color="#009900">$(</font>cat /etc/hostname<font color="#990000">)</font> -END +<i><font color="#ababab"># Bashrc</font></i> +<font color="#ff0000">cat </font><font color="#F3E651"><<</font><font color="#ff0000">END </font><font color="#F3E651">>~/.</font><font color="#ff0000">bashrc</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">PATH</font><font color="#F3E651">=</font><font color="#ff0000">/usr/local/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/local/bin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/bin</font><font color="#F3E651">:</font><font color="#ff0000">/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/bin</font><font color="#F3E651">:</font><font color="#ff0000">$PATH</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">EDITOR</font><font color="#F3E651">=</font><font color="#ff0000">vim</font> +<font color="#ff0000">hostname </font><font color="#ff0000">$(</font><font color="#ff0000">cat /etc/hostname</font><font color="#F3E651">)</font> +<font color="#ff0000">END</font> -<i><font color="#9A1900"># Fixing an error message while loading the profile</font></i> -sed -i s<i><font color="#9A1900">#id#/usr/bin/id# /etc/profile</font></i> +<i><font color="#ababab"># Fixing an error message while loading the profile</font></i> +<font color="#ff0000">sed -i s</font><i><font color="#ababab">#id#/usr/bin/id# /etc/profile</font></i> -<i><font color="#9A1900"># Setting the hostname</font></i> -echo phobos <font color="#990000">></font> /etc/hostname -echo <font color="#993399">127.0</font><font color="#990000">.</font><font color="#993399">0.1</font> phobos <font color="#990000">></font> /etc/hosts -hostname phobos +<i><font color="#ababab"># Setting the hostname</font></i> +<font color="#ff0000">echo phobos </font><font color="#F3E651">></font><font color="#ff0000"> /etc/hostname</font> +<font color="#ff0000">echo </font><font color="#bb00ff">127.0</font><font color="#F3E651">.</font><font color="#bb00ff">0.1</font><font color="#ff0000"> phobos </font><font color="#F3E651">></font><font color="#ff0000"> /etc/hosts</font> +<font color="#ff0000">hostname phobos</font> -<i><font color="#9A1900"># Apt-sources</font></i> -cat <font color="#990000"><<</font>END <font color="#990000">></font> sources<font color="#990000">.</font>list -deb http<font color="#990000">:</font>//ftp<font color="#990000">.</font>uk<font color="#990000">.</font>debian<font color="#990000">.</font>org/debian<font color="#990000">/</font> jessie main contrib non-free -deb-src http<font color="#990000">:</font>//ftp<font color="#990000">.</font>uk<font color="#990000">.</font>debian<font color="#990000">.</font>org/debian<font color="#990000">/</font> jessie main contrib non-free -END -apt-get update -apt-get upgrade -apt-get dist-upgrade -<b><font color="#0000FF">exit</font></b> <i><font color="#9A1900"># Exit chroot</font></i> +<i><font color="#ababab"># Apt-sources</font></i> +<font color="#ff0000">cat </font><font color="#F3E651"><<</font><font color="#ff0000">END </font><font color="#F3E651">></font><font color="#ff0000"> sources</font><font color="#F3E651">.</font><font color="#ff0000">list</font> +<font color="#ff0000">deb http</font><font color="#F3E651">:</font><font color="#ff0000">//ftp</font><font color="#F3E651">.</font><font color="#ff0000">uk</font><font color="#F3E651">.</font><font color="#ff0000">debian</font><font color="#F3E651">.</font><font color="#ff0000">org/debian</font><font color="#F3E651">/</font><font color="#ff0000"> jessie main contrib non-free</font> +<font color="#ff0000">deb-src http</font><font color="#F3E651">:</font><font color="#ff0000">//ftp</font><font color="#F3E651">.</font><font color="#ff0000">uk</font><font color="#F3E651">.</font><font color="#ff0000">debian</font><font color="#F3E651">.</font><font color="#ff0000">org/debian</font><font color="#F3E651">/</font><font color="#ff0000"> jessie main contrib non-free</font> +<font color="#ff0000">END</font> +<font color="#ff0000">apt-get update</font> +<font color="#ff0000">apt-get upgrade</font> +<font color="#ff0000">apt-get dist-upgrade</font> +<b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><i><font color="#ababab"># Exit chroot</font></i> </pre> <br /> <h3 style='display: inline' id='EnteringDebroidandenableaservice'>Entering Debroid and enable a service</h3><br /> @@ -172,19 +172,19 @@ apt-get dist-upgrade by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>sh jessie<font color="#990000">.</font>sh enter +<pre><font color="#ff0000">sh jessie</font><font color="#F3E651">.</font><font color="#ff0000">sh enter</font> -<i><font color="#9A1900"># Setup example serice uptimed</font></i> -apt-get install uptimed -cat <font color="#990000"><<</font>END <font color="#990000">></font> /etc/rc<font color="#990000">.</font>debroid -<b><font color="#0000FF">export</font></b> <font color="#009900">PATH</font><font color="#990000">=</font>/usr/local/sbin<font color="#990000">:</font>/usr/local/bin<font color="#990000">:</font>/usr/sbin<font color="#990000">:</font>/usr/bin<font color="#990000">:</font>/sbin<font color="#990000">:</font>/bin<font color="#990000">:</font><font color="#009900">$PATH</font> -service uptimed status <font color="#990000">&></font>/dev/null <font color="#990000">||</font> service uptimed start -<b><font color="#0000FF">exit</font></b> <font color="#993399">0</font> -END +<i><font color="#ababab"># Setup example serice uptimed</font></i> +<font color="#ff0000">apt-get install uptimed</font> +<font color="#ff0000">cat </font><font color="#F3E651"><<</font><font color="#ff0000">END </font><font color="#F3E651">></font><font color="#ff0000"> /etc/rc</font><font color="#F3E651">.</font><font color="#ff0000">debroid</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">PATH</font><font color="#F3E651">=</font><font color="#ff0000">/usr/local/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/local/bin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/usr/bin</font><font color="#F3E651">:</font><font color="#ff0000">/sbin</font><font color="#F3E651">:</font><font color="#ff0000">/bin</font><font color="#F3E651">:</font><font color="#ff0000">$PATH</font> +<font color="#ff0000">service uptimed status </font><font color="#F3E651">&></font><font color="#ff0000">/dev/null </font><font color="#F3E651">||</font><font color="#ff0000"> service uptimed start</font> +<b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<font color="#ff0000">END</font> -chmod <font color="#993399">0755</font> /etc/rc<font color="#990000">.</font>debroid -<b><font color="#0000FF">exit</font></b> <i><font color="#9A1900"># Exit chroot</font></i> -<b><font color="#0000FF">exit</font></b> <i><font color="#9A1900"># Exit adb shell</font></i> +<font color="#ff0000">chmod </font><font color="#bb00ff">0755</font><font color="#ff0000"> /etc/rc</font><font color="#F3E651">.</font><font color="#ff0000">debroid</font> +<b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><i><font color="#ababab"># Exit chroot</font></i> +<b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><i><font color="#ababab"># Exit adb shell</font></i> </pre> <br /> <h3 style='display: inline' id='IncludetoAndroidstartup'>Include to Android startup:</h3><br /> @@ -195,10 +195,10 @@ chmod <font color="#993399">0755</font> /etc/rc<font color="#990000">.</font>deb by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>adb push data/local/userinit<font color="#990000">.</font>sh /data/local/userinit<font color="#990000">.</font>sh -adb shell -chmod <font color="#990000">+</font>x /data/local/userinit<font color="#990000">.</font>sh -<b><font color="#0000FF">exit</font></b> +<pre><font color="#ff0000">adb push data/local/userinit</font><font color="#F3E651">.</font><font color="#ff0000">sh /data/local/userinit</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000">adb shell</font> +<font color="#ff0000">chmod </font><font color="#F3E651">+</font><font color="#ff0000">x /data/local/userinit</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<b><font color="#ffffff">exit</font></b> </pre> <br /> <span>Reboot & test! Enjoy!</span><br /> diff --git a/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html b/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html index 3c8e6fad..82302e43 100644 --- a/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html +++ b/gemfeed/2016-11-20-object-oriented-programming-with-ansi-c.html @@ -31,37 +31,37 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000080">#include</font></b> <font color="#FF0000"><stdio.h></font> +<pre><font color="#ababab">#include</font><font color="#ff0000"> </font><font color="#bb00ff"><stdio.h></font> -<b><font color="#0000FF">typedef</font></b> <b><font color="#0000FF">struct</font></b> <font color="#FF0000">{</font> - <font color="#009900">double</font> <font color="#990000">(*</font>calculate<font color="#990000">)(</font><b><font color="#0000FF">const</font></b> <font color="#009900">double</font><font color="#990000">,</font> <b><font color="#0000FF">const</font></b> <font color="#009900">double</font><font color="#990000">);</font> - <font color="#009900">char</font> <font color="#990000">*</font>name<font color="#990000">;</font> -<font color="#FF0000">}</font> something_s<font color="#990000">;</font> +<b><font color="#ffffff">typedef</font></b><font color="#ff0000"> </font><b><font color="#ffffff">struct</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> </font><font color="#F3E651">(*</font><font color="#ff0000">calculate</font><font color="#F3E651">)(</font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#F3E651">);</font> +<font color="#ff0000"> </font><b><font color="#F35E1E">char</font></b><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000">name</font><font color="#F3E651">;</font> +<font color="#F3E651">}</font><font color="#ff0000"> something_s</font><font color="#F3E651">;</font> -<font color="#009900">double</font> <b><font color="#000000">multiplication</font></b><font color="#990000">(</font><b><font color="#0000FF">const</font></b> <font color="#009900">double</font> a<font color="#990000">,</font> <b><font color="#0000FF">const</font></b> <font color="#009900">double</font> b<font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">return</font></b> a <font color="#990000">*</font> b<font color="#990000">;</font> -<font color="#FF0000">}</font> +<b><font color="#F35E1E">double</font></b><font color="#ff0000"> </font><font color="#7bc710">multiplication</font><font color="#F3E651">(</font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> b</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a </font><font color="#F3E651">*</font><font color="#ff0000"> b</font><font color="#F3E651">;</font> +<font color="#F3E651">}</font> -<font color="#009900">double</font> <b><font color="#000000">division</font></b><font color="#990000">(</font><b><font color="#0000FF">const</font></b> <font color="#009900">double</font> a<font color="#990000">,</font> <b><font color="#0000FF">const</font></b> <font color="#009900">double</font> b<font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">return</font></b> a <font color="#990000">/</font> b<font color="#990000">;</font> -<font color="#FF0000">}</font> +<b><font color="#F35E1E">double</font></b><font color="#ff0000"> </font><font color="#7bc710">division</font><font color="#F3E651">(</font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> b</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a </font><font color="#F3E651">/</font><font color="#ff0000"> b</font><font color="#F3E651">;</font> +<font color="#F3E651">}</font> -<font color="#009900">int</font> <b><font color="#000000">main</font></b><font color="#990000">(</font><font color="#009900">void</font><font color="#990000">)</font> <font color="#FF0000">{</font> - <font color="#008080">something_s</font> mult <font color="#990000">=</font> <font color="#990000">(</font>something_s<font color="#990000">)</font> <font color="#FF0000">{</font> - <font color="#990000">.</font>calculate <font color="#990000">=</font> multiplication<font color="#990000">,</font> - <font color="#990000">.</font>name <font color="#990000">=</font> <font color="#FF0000">"Multiplication"</font> - <font color="#FF0000">}</font><font color="#990000">;</font> +<b><font color="#F35E1E">int</font></b><font color="#ff0000"> </font><font color="#7bc710">main</font><font color="#F3E651">(</font><b><font color="#F35E1E">void</font></b><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">something_s</font><font color="#ff0000"> mult </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">something_s</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">calculate </font><font color="#F3E651">=</font><font color="#ff0000"> multiplication</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">name </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">"Multiplication"</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> - <font color="#008080">something_s</font> div <font color="#990000">=</font> <font color="#990000">(</font>something_s<font color="#990000">)</font> <font color="#FF0000">{</font> - <font color="#990000">.</font>calculate <font color="#990000">=</font> division<font color="#990000">,</font> - <font color="#990000">.</font>name <font color="#990000">=</font> <font color="#FF0000">"Division"</font> - <font color="#FF0000">}</font><font color="#990000">;</font> +<font color="#ff0000"> </font><font color="#ff0000">something_s</font><font color="#ff0000"> div </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">something_s</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">calculate </font><font color="#F3E651">=</font><font color="#ff0000"> division</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">name </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">"Division"</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">;</font> - <b><font color="#0000FF">const</font></b> <font color="#009900">double</font> a <font color="#990000">=</font> <font color="#993399">3</font><font color="#990000">,</font> b <font color="#990000">=</font> <font color="#993399">2</font><font color="#990000">;</font> +<font color="#ff0000"> </font><b><font color="#ffffff">const</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">double</font></b><font color="#ff0000"> a </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">3</font><font color="#F3E651">,</font><font color="#ff0000"> b </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#bb00ff">2</font><font color="#F3E651">;</font> - <b><font color="#000000">printf</font></b><font color="#990000">(</font><font color="#FF0000">"%s(%f, %f) => %f</font><font color="#CC33CC">\n</font><font color="#FF0000">"</font><font color="#990000">,</font> mult<font color="#990000">.</font>name<font color="#990000">,</font> a<font color="#990000">,</font> b<font color="#990000">,</font> mult<font color="#990000">.</font><b><font color="#000000">calculate</font></b><font color="#990000">(</font>a<font color="#990000">,</font>b<font color="#990000">));</font> - <b><font color="#000000">printf</font></b><font color="#990000">(</font><font color="#FF0000">"%s(%f, %f) => %f</font><font color="#CC33CC">\n</font><font color="#FF0000">"</font><font color="#990000">,</font> div<font color="#990000">.</font>name<font color="#990000">,</font> a<font color="#990000">,</font> b<font color="#990000">,</font> div<font color="#990000">.</font><b><font color="#000000">calculate</font></b><font color="#990000">(</font>a<font color="#990000">,</font>b<font color="#990000">));</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) => %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font> +<font color="#ff0000"> </font><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) => %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font> +<font color="#F3E651">}</font> </pre> <br /> <span>As you can see, you can call the function (pointed by the function pointer) with the same syntax as in C++ or Java:</span><br /> @@ -70,8 +70,8 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">printf</font></b><font color="#990000">(</font><font color="#FF0000">"%s(%f, %f) => %f</font><font color="#CC33CC">\n</font><font color="#FF0000">"</font><font color="#990000">,</font> mult<font color="#990000">.</font>name<font color="#990000">,</font> a<font color="#990000">,</font> b<font color="#990000">,</font> mult<font color="#990000">.</font><b><font color="#000000">calculate</font></b><font color="#990000">(</font>a<font color="#990000">,</font>b<font color="#990000">));</font> -<b><font color="#000000">printf</font></b><font color="#990000">(</font><font color="#FF0000">"%s(%f, %f) => %f</font><font color="#CC33CC">\n</font><font color="#FF0000">"</font><font color="#990000">,</font> div<font color="#990000">.</font>name<font color="#990000">,</font> a<font color="#990000">,</font> b<font color="#990000">,</font> div<font color="#990000">.</font><b><font color="#000000">calculate</font></b><font color="#990000">(</font>a<font color="#990000">,</font>b<font color="#990000">));</font> +<pre><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) => %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font> +<font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) => %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font> </pre> <br /> <span>However, that's just syntactic sugar for:</span><br /> @@ -80,8 +80,8 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">printf</font></b><font color="#990000">(</font><font color="#FF0000">"%s(%f, %f) => %f</font><font color="#CC33CC">\n</font><font color="#FF0000">"</font><font color="#990000">,</font> mult<font color="#990000">.</font>name<font color="#990000">,</font> a<font color="#990000">,</font> b<font color="#990000">,</font> <font color="#990000">(*</font>mult<font color="#990000">.</font>calculate<font color="#990000">)(</font>a<font color="#990000">,</font>b<font color="#990000">));</font> -<b><font color="#000000">printf</font></b><font color="#990000">(</font><font color="#FF0000">"%s(%f, %f) => %f</font><font color="#CC33CC">\n</font><font color="#FF0000">"</font><font color="#990000">,</font> div<font color="#990000">.</font>name<font color="#990000">,</font> a<font color="#990000">,</font> b<font color="#990000">,</font> <font color="#990000">(*</font>div<font color="#990000">.</font>calculate<font color="#990000">)(</font>a<font color="#990000">,</font>b<font color="#990000">));</font> +<pre><font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) => %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> mult</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">(*</font><font color="#ff0000">mult</font><font color="#F3E651">.</font><font color="#ff0000">calculate</font><font color="#F3E651">)(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font> +<font color="#7bc710">printf</font><font color="#F3E651">(</font><font color="#bb00ff">"%s(%f, %f) => %f</font><font color="#ffffff">\n</font><font color="#bb00ff">"</font><font color="#F3E651">,</font><font color="#ff0000"> div</font><font color="#F3E651">.</font><font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">,</font><font color="#ff0000"> b</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">(*</font><font color="#ff0000">div</font><font color="#F3E651">.</font><font color="#ff0000">calculate</font><font color="#F3E651">)(</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font> </pre> <br /> <span>Output:</span><br /> @@ -90,10 +90,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>pbuetow <font color="#990000">~</font>/git/blog/source <font color="#990000">[</font><font color="#993399">38268</font><font color="#990000">]%</font> gcc oop-c-example<font color="#990000">.</font>c -o oop-c-example -pbuetow <font color="#990000">~</font>/git/blog/source <font color="#990000">[</font><font color="#993399">38269</font><font color="#990000">]%</font> <font color="#990000">.</font>/oop-c-example -Multiplication<font color="#990000">(</font><font color="#993399">3.000000</font><font color="#990000">,</font> <font color="#993399">2.000000</font><font color="#990000">)</font> <font color="#990000">=></font> <font color="#993399">6.000000</font> -Division<font color="#990000">(</font><font color="#993399">3.000000</font><font color="#990000">,</font> <font color="#993399">2.000000</font><font color="#990000">)</font> <font color="#990000">=></font> <font color="#993399">1.500000</font> +<pre><font color="#ff0000">pbuetow </font><font color="#F3E651">~</font><font color="#ff0000">/git/blog/source </font><font color="#F3E651">[</font><font color="#bb00ff">38268</font><font color="#F3E651">]%</font><font color="#ff0000"> gcc oop-c-example</font><font color="#F3E651">.</font><font color="#ff0000">c -o oop-c-example</font> +<font color="#ff0000">pbuetow </font><font color="#F3E651">~</font><font color="#ff0000">/git/blog/source </font><font color="#F3E651">[</font><font color="#bb00ff">38269</font><font color="#F3E651">]%</font><font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/oop-c-example</font> +<font color="#ff0000">Multiplication</font><font color="#F3E651">(</font><font color="#bb00ff">3.000000</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">2.000000</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=></font><font color="#ff0000"> </font><font color="#bb00ff">6.000000</font> +<font color="#ff0000">Division</font><font color="#F3E651">(</font><font color="#bb00ff">3.000000</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">2.000000</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">=></font><font color="#ff0000"> </font><font color="#bb00ff">1.500000</font> </pre> <br /> <span>Not complicated at all, but nice to know and helps to make the code easier to read!</span><br /> @@ -106,7 +106,7 @@ Division<font color="#990000">(</font><font color="#993399">3.000000</font><font by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>mult<font color="#990000">.</font><b><font color="#000000">calculate</font></b><font color="#990000">(</font>mult<font color="#990000">,</font>a<font color="#990000">,</font>b<font color="#990000">));</font> +<pre><font color="#ff0000">mult</font><font color="#F3E651">.</font><font color="#7bc710">calculate</font><font color="#F3E651">(</font><font color="#ff0000">mult</font><font color="#F3E651">,</font><font color="#ff0000">a</font><font color="#F3E651">,</font><font color="#ff0000">b</font><font color="#F3E651">));</font> </pre> <br /> <h2 style='display: inline' id='RealobjectorientedprogrammingwithC'>Real object oriented programming with C</h2><br /> diff --git a/gemfeed/2021-05-16-personal-bash-coding-style-guide.html b/gemfeed/2021-05-16-personal-bash-coding-style-guide.html index ab1aea8c..408b3c65 100644 --- a/gemfeed/2021-05-16-personal-bash-coding-style-guide.html +++ b/gemfeed/2021-05-16-personal-bash-coding-style-guide.html @@ -41,7 +41,7 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/bin/bash </font></i> +<pre><i><font color="#ababab">#!/bin/bash </font></i> </pre> <br /> <span>... as the shebang line, but that does not work on all Unix and Unix-like operating systems (e.g., the *BSDs don't have Bash installed to /bin/bash). Better is:</span><br /> @@ -50,7 +50,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> </pre> <br /> <h3 style='display: inline' id='Twospacesofttabsindentation'>Two space soft-tabs indentation</h3><br /> @@ -71,14 +71,14 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># All fits on one line</font></i> -command1 <font color="#990000">|</font> command2 +<pre><i><font color="#ababab"># All fits on one line</font></i> +<font color="#ff0000">command1 </font><font color="#F3E651">|</font><font color="#ff0000"> command2</font> -<i><font color="#9A1900"># Long commands</font></i> -command1 <font color="#990000">\</font> - <font color="#990000">|</font> command2 <font color="#990000">\</font> - <font color="#990000">|</font> command3 <font color="#990000">\</font> - <font color="#990000">|</font> command4 +<i><font color="#ababab"># Long commands</font></i> +<font color="#ff0000">command1 </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> command2 </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> command3 </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> command4</font> </pre> <br /> <span>I think there is a better way like the following, which is less noisy. The pipe | already indicates the Bash that another command is expected, thus making the explicit line breaks with \ obsolete:</span><br /> @@ -87,11 +87,11 @@ command1 <font color="#990000">\</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Long commands</font></i> -command1 <font color="#990000">|</font> - command2 <font color="#990000">|</font> - command3 <font color="#990000">|</font> - command4 +<pre><i><font color="#ababab"># Long commands</font></i> +<font color="#ff0000">command1 </font><font color="#F3E651">|</font> +<font color="#ff0000"> command2 </font><font color="#F3E651">|</font> +<font color="#ff0000"> command3 </font><font color="#F3E651">|</font> +<font color="#ff0000"> command4</font> </pre> <br /> <span class='quote'>Update: It's 2023 now, and I have changed my mind. I think Google's way is the better one. It may be a bit more to type, but the leading <span class='inlinecode'>|</span> are a nice eye catcher, so you know immediately what is going on!</span><br /> @@ -104,11 +104,11 @@ command1 <font color="#990000">|</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">greet ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">greeting</font><font color="#990000">=</font><font color="#FF0000">"${1}"</font> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">name</font><font color="#990000">=</font><font color="#FF0000">"${2}"</font> - echo <font color="#FF0000">"${greeting} ${name}!"</font> -} +<pre><font color="#7bc710">greet ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">greeting</font><font color="#F3E651">=</font><font color="#bb00ff">"${1}"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">name</font><font color="#F3E651">=</font><font color="#bb00ff">"${2}"</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"${greeting} ${name}!"</font> +<font color="#ff0000">}</font> </pre> <br /> <span>In this particular example, I agree that you should quote them as you don't know the input (are there, for example, whitespace characters?). But if you are sure that you are only using simple bare words, then I think that the code looks much cleaner when you do this instead:</span><br /> @@ -117,11 +117,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">say_hello_to_paul ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">greeting</font><font color="#990000">=</font>Hello - <b><font color="#0000FF">local</font></b> -r <font color="#009900">name</font><font color="#990000">=</font>Paul - echo <font color="#FF0000">"$greeting $name!"</font> -} +<pre><font color="#7bc710">say_hello_to_paul ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">greeting</font><font color="#F3E651">=</font><font color="#ff0000">Hello</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">name</font><font color="#F3E651">=</font><font color="#ff0000">Paul</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$greeting $name!"</font> +<font color="#ff0000">}</font> </pre> <br /> <span>You see, I also omitted the curly braces { } around the variables. I only use the curly braces around variables when it makes the code either easier/clearer to read or if it is necessary to use them:</span><br /> @@ -130,9 +130,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">declare</font></b> <font color="#009900">FOO</font><font color="#990000">=</font>bar -<i><font color="#9A1900"># Curly braces around FOO are necessary</font></i> -echo <font color="#FF0000">"foo${FOO}baz"</font> +<pre><b><font color="#ffffff">declare</font></b><font color="#ff0000"> </font><font color="#ff0000">FOO</font><font color="#F3E651">=</font><font color="#ff0000">bar</font> +<i><font color="#ababab"># Curly braces around FOO are necessary</font></i> +<font color="#ff0000">echo </font><font color="#bb00ff">"foo${FOO}baz"</font> </pre> <br /> <span>A few more words on always quoting the variables: For the sake of consistency (and for making ShellCheck happy), I am not against quoting everything I encounter. I also think that the larger the Bash script becomes, the more critical it becomes always to quote variables. That's because it will be more likely that you might not remember that some of the functions don't work on values with spaces in them, for example. It's just that I won't quote everything in every small script I write. </span><br /> @@ -145,13 +145,13 @@ echo <font color="#FF0000">"foo${FOO}baz"</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Prefer this:</font></i> -<font color="#009900">addition</font><font color="#990000">=</font><font color="#009900">$(</font><font color="#990000">(</font> X <font color="#990000">+</font> Y <font color="#990000">))</font> -<font color="#009900">substitution</font><font color="#990000">=</font><font color="#FF0000">"${string/#foo/bar}"</font> +<pre><i><font color="#ababab"># Prefer this:</font></i> +<font color="#ff0000">addition</font><font color="#F3E651">=</font><font color="#ff0000">$(</font><font color="#F3E651">(</font><font color="#ff0000"> X </font><font color="#F3E651">+</font><font color="#ff0000"> Y </font><font color="#F3E651">))</font> +<font color="#ff0000">substitution</font><font color="#F3E651">=</font><font color="#bb00ff">"${string/#foo/bar}"</font> -<i><font color="#9A1900"># Instead of this:</font></i> -<font color="#009900">addition</font><font color="#990000">=</font><font color="#FF0000">"$(expr "</font><font color="#009900">${X}</font><font color="#FF0000">" + "</font><font color="#009900">${Y}</font><font color="#FF0000">")"</font> -<font color="#009900">substitution</font><font color="#990000">=</font><font color="#FF0000">"$(echo "</font><font color="#009900">${string}</font><font color="#FF0000">" | sed -e 's/^foo/bar/')"</font> +<i><font color="#ababab"># Instead of this:</font></i> +<font color="#ff0000">addition</font><font color="#F3E651">=</font><font color="#bb00ff">"$(expr "</font><font color="#ff0000">${X}</font><font color="#bb00ff">" + "</font><font color="#ff0000">${Y}</font><font color="#bb00ff">")"</font> +<font color="#ff0000">substitution</font><font color="#F3E651">=</font><font color="#bb00ff">"$(echo "</font><font color="#ff0000">${string}</font><font color="#bb00ff">" | sed -e 's/^foo/bar/')"</font> </pre> <br /> <span>I can't entirely agree here. The external commands (especially sed) are much more sophisticated and powerful than the built-in Bash versions. Sed can do much more than the Bash can ever do by itself when it comes to text manipulation (the name "sed" stands for streaming editor, after all).</span><br /> @@ -172,20 +172,20 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">declare</font></b> -r <font color="#009900">SUGAR_FREE</font><font color="#990000">=</font>yes -<b><font color="#0000FF">declare</font></b> -r <font color="#009900">I_NEED_THE_BUZZ</font><font color="#990000">=</font>no +<pre><b><font color="#ffffff">declare</font></b><font color="#ff0000"> -r </font><font color="#ff0000">SUGAR_FREE</font><font color="#F3E651">=</font><font color="#ff0000">yes</font> +<b><font color="#ffffff">declare</font></b><font color="#ff0000"> -r </font><font color="#ff0000">I_NEED_THE_BUZZ</font><font color="#F3E651">=</font><font color="#ff0000">no</font> -<b><font color="#000000">buy_soda ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">sugar_free</font><font color="#990000">=</font><font color="#009900">$1</font> +<font color="#7bc710">buy_soda ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">sugar_free</font><font color="#F3E651">=</font><font color="#ff0000">$1</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">[[</font> <font color="#009900">$sugar_free</font> <font color="#990000">==</font> yes <font color="#990000">]];</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">'Diet Dr. Pepper'</font> - <b><font color="#0000FF">else</font></b> - echo <font color="#FF0000">'Pepsi Coke'</font> - <b><font color="#0000FF">fi</font></b> -} +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#ff0000">$sugar_free</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> yes </font><font color="#F3E651">]];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Diet Dr. Pepper'</font> +<font color="#ff0000"> </font><b><font color="#ffffff">else</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Pepsi Coke'</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<font color="#ff0000">}</font> -buy_soda <font color="#009900">$I_NEED_THE_BUZZ</font> +<font color="#ff0000">buy_soda </font><font color="#ff0000">$I_NEED_THE_BUZZ</font> </pre> <br /> <h3 style='display: inline' id='Nonevilalternativetovariableassignmentsviaeval'>Non-evil alternative to variable assignments via eval</h3><br /> @@ -196,12 +196,12 @@ buy_soda <font color="#009900">$I_NEED_THE_BUZZ</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># What does this set?</font></i> -<i><font color="#9A1900"># Did it succeed? In part or whole?</font></i> -<b><font color="#0000FF">eval</font></b> <font color="#009900">$(set_my_variables)</font> +<pre><i><font color="#ababab"># What does this set?</font></i> +<i><font color="#ababab"># Did it succeed? In part or whole?</font></i> +<b><font color="#ffffff">eval</font></b><font color="#ff0000"> </font><font color="#ff0000">$(set_my_variables)</font> -<i><font color="#9A1900"># What happens if one of the returned values has a space in it?</font></i> -<font color="#009900">variable</font><font color="#990000">=</font><font color="#FF0000">"$(eval some_function)"</font> +<i><font color="#ababab"># What happens if one of the returned values has a space in it?</font></i> +<font color="#ff0000">variable</font><font color="#F3E651">=</font><font color="#bb00ff">"$(eval some_function)"</font> </pre> <br /> <span>However, if I want to read variables from another file, I don't have to use eval here. I only have to source the file:</span><br /> @@ -240,39 +240,39 @@ Hello paul, it is Sat 15 May 19:21:12 BST 2021 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">filter_lines ()</font></b> { - echo <font color="#FF0000">'Start filtering lines in a fancy way!'</font> <font color="#990000">>&</font><font color="#993399">2</font> - grep <font color="#990000">...</font> <font color="#990000">|</font> sed <font color="#990000">....</font> -} +<pre><font color="#7bc710">filter_lines ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Start filtering lines in a fancy way!'</font><font color="#ff0000"> </font><font color="#F3E651">>&</font><font color="#bb00ff">2</font> +<font color="#ff0000"> grep </font><font color="#F3E651">...</font><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> sed </font><font color="#F3E651">....</font> +<font color="#ff0000">}</font> -<b><font color="#000000">process_lines ()</font></b> { - echo <font color="#FF0000">'Start processing line by line!'</font> <font color="#990000">>&</font><font color="#993399">2</font> - <b><font color="#0000FF">while</font></b> <b><font color="#0000FF">read</font></b> -r line<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> - <font color="#990000">...</font> <b><font color="#0000FF">do</font></b> something and produce a result<font color="#990000">...</font> - echo <font color="#FF0000">"$result"</font> - <b><font color="#0000FF">done</font></b> -} +<font color="#7bc710">process_lines ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Start processing line by line!'</font><font color="#ff0000"> </font><font color="#F3E651">>&</font><font color="#bb00ff">2</font> +<font color="#ff0000"> </font><b><font color="#ffffff">while</font></b><font color="#ff0000"> </font><b><font color="#ffffff">read</font></b><font color="#ff0000"> -r line</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> </font><font color="#F3E651">...</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> something and produce a result</font><font color="#F3E651">...</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$result"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">done</font></b><font color="#ff0000"> </font> +<font color="#ff0000">}</font> -<i><font color="#9A1900"># Do some post-processing of the data</font></i> -<b><font color="#000000">postprocess_lines ()</font></b> { - echo <font color="#FF0000">'Start removing duplicates!'</font> <font color="#990000">>&</font><font color="#993399">2</font> - sort -u -} +<i><font color="#ababab"># Do some post-processing of the data</font></i> +<font color="#7bc710">postprocess_lines ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Start removing duplicates!'</font><font color="#ff0000"> </font><font color="#F3E651">>&</font><font color="#bb00ff">2</font> +<font color="#ff0000"> sort -u</font> +<font color="#ff0000">}</font> -<b><font color="#000000">genreate_report ()</font></b> { - echo <font color="#FF0000">'My boss wants to have a report!'</font> <font color="#990000">>&</font><font color="#993399">2</font> - tee outfile<font color="#990000">.</font>txt - wc -l outfile<font color="#990000">.</font>txt -} +<font color="#7bc710">genreate_report ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'My boss wants to have a report!'</font><font color="#ff0000"> </font><font color="#F3E651">>&</font><font color="#bb00ff">2</font> +<font color="#ff0000"> tee outfile</font><font color="#F3E651">.</font><font color="#ff0000">txt</font> +<font color="#ff0000"> wc -l outfile</font><font color="#F3E651">.</font><font color="#ff0000">txt</font> +<font color="#ff0000">}</font> -<b><font color="#000000">main ()</font></b> { - filter_lines <font color="#990000">|</font> - process_lines <font color="#990000">|</font> - postprocess_lines <font color="#990000">|</font> - generate_report -} +<font color="#7bc710">main ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> filter_lines </font><font color="#F3E651">|</font> +<font color="#ff0000"> process_lines </font><font color="#F3E651">|</font> +<font color="#ff0000"> postprocess_lines </font><font color="#F3E651">|</font> +<font color="#ff0000"> generate_report</font> +<font color="#ff0000">}</font> -main +<font color="#ff0000">main</font> </pre> <br /> <span>The stdout is always passed as a pipe to the next following stage. The stderr is used for info logging.</span><br /> @@ -287,13 +287,13 @@ main by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">some_function ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_foo</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_baz</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_bay</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> +<pre><font color="#7bc710">some_function ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_foo</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_baz</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_bay</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> - <i><font color="#9A1900"># ...</font></i> -} +<font color="#ff0000"> </font><i><font color="#ababab"># ...</font></i> +<font color="#ff0000">}</font> </pre> <br /> <span>Want to add a param_baz? Just do this:</span><br /> @@ -302,14 +302,14 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">some_function ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_foo</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_bar</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_baz</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_bay</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> +<pre><font color="#7bc710">some_function ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_foo</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_bar</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_baz</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_bay</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> - <i><font color="#9A1900"># ...</font></i> -} +<font color="#ff0000"> </font><i><font color="#ababab"># ...</font></i> +<font color="#ff0000">}</font> </pre> <br /> <span>Want to remove param_foo? Nothing easier than that:</span><br /> @@ -318,13 +318,13 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">some_function ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_bar</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_baz</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">param_bay</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - - <i><font color="#9A1900"># ...</font></i> -} +<pre><font color="#7bc710">some_function ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_bar</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_baz</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">param_bay</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font> +<font color="#ff0000"> </font><i><font color="#ababab"># ...</font></i> +<font color="#ff0000">}</font> </pre> <br /> <span>As you can see, I didn't need to change any other assignments within the function. Of course, you would also need to change the function argument lists at every occasion where the function is invoked - you would do that within the same refactoring session.</span><br /> @@ -337,9 +337,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">set</font></b> -e -grep -q foo <font color="#990000"><<<</font> bar -echo Jo +<pre><b><font color="#ffffff">set</font></b><font color="#ff0000"> -e</font> +<font color="#ff0000">grep -q foo </font><font color="#F3E651"><<<</font><font color="#ff0000"> bar</font> +<font color="#ff0000">echo Jo</font> </pre> <br /> <span>Here 'Jo' will never be printed out as the grep didn't find any match. It's unrealistic for most scripts to run in paranoid mode purely, so there must be a way to add exceptions. Critical Bash scripts of mine tend to look like this:</span><br /> @@ -348,26 +348,26 @@ echo Jo by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#0000FF">set</font></b> -e +<b><font color="#ffffff">set</font></b><font color="#ff0000"> -e</font> -<b><font color="#000000">some_function ()</font></b> { - <i><font color="#9A1900"># .. some critical code</font></i> - <i><font color="#9A1900"># ...</font></i> +<font color="#7bc710">some_function ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><i><font color="#ababab"># .. some critical code</font></i> +<font color="#ff0000"> </font><i><font color="#ababab"># ...</font></i> - <b><font color="#0000FF">set</font></b> <font color="#990000">+</font>e - <i><font color="#9A1900"># Grep might fail, but that's OK now</font></i> - grep <font color="#990000">....</font> - <b><font color="#0000FF">local</font></b> -i <font color="#009900">ec</font><font color="#990000">=</font><font color="#009900">$?</font> - <b><font color="#0000FF">set</font></b> -e +<font color="#ff0000"> </font><b><font color="#ffffff">set</font></b><font color="#ff0000"> </font><font color="#F3E651">+</font><font color="#ff0000">e</font> +<font color="#ff0000"> </font><i><font color="#ababab"># Grep might fail, but that's OK now</font></i> +<font color="#ff0000"> grep </font><font color="#F3E651">....</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">ec</font><font color="#F3E651">=</font><font color="#ff0000">$?</font> +<font color="#ff0000"> </font><b><font color="#ffffff">set</font></b><font color="#ff0000"> -e</font> - <i><font color="#9A1900"># .. critical code continues ...</font></i> - <b><font color="#0000FF">if</font></b> <font color="#990000">[[</font> <font color="#009900">$ec</font> -ne <font color="#993399">0</font> <font color="#990000">]];</font> <b><font color="#0000FF">then</font></b> - <font color="#990000">:</font> <i><font color="#9A1900"># ...</font></i> - <b><font color="#0000FF">fi</font></b> - <i><font color="#9A1900"># ...</font></i> -} +<font color="#ff0000"> </font><i><font color="#ababab"># .. critical code continues ...</font></i> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#ff0000">$ec</font><font color="#ff0000"> -ne </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">]];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><font color="#F3E651">:</font><font color="#ff0000"> </font><i><font color="#ababab"># ...</font></i> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<font color="#ff0000"> </font><i><font color="#ababab"># ...</font></i> +<font color="#ff0000">}</font> </pre> <br /> <h2 style='display: inline' id='Learned'>Learned</h2><br /> @@ -382,10 +382,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">if</font></b> <font color="#990000">[[</font> <font color="#FF0000">"${my_var}"</font> <font color="#990000">></font> <font color="#993399">3</font> <font color="#990000">]];</font> <b><font color="#0000FF">then</font></b> - <i><font color="#9A1900"># True for 4, false for 22.</font></i> - do_something -<b><font color="#0000FF">fi</font></b> +<pre><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#bb00ff">"${my_var}"</font><font color="#ff0000"> </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#bb00ff">3</font><font color="#ff0000"> </font><font color="#F3E651">]];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><i><font color="#ababab"># True for 4, false for 22.</font></i> +<font color="#ff0000"> do_something</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>... but it is probably an unintended lexicographical comparison. A correct way would be:</span><br /> @@ -394,9 +394,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">if</font></b> <font color="#990000">((</font> my_var <font color="#990000">></font> <font color="#993399">3</font> <font color="#990000">));</font> <b><font color="#0000FF">then</font></b> - do_something -<b><font color="#0000FF">fi</font></b> +<pre><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">((</font><font color="#ff0000"> my_var </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#bb00ff">3</font><font color="#ff0000"> </font><font color="#F3E651">));</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> do_something</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>or</span><br /> @@ -405,9 +405,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">if</font></b> <font color="#990000">[[</font> <font color="#FF0000">"${my_var}"</font> -gt <font color="#993399">3</font> <font color="#990000">]];</font> <b><font color="#0000FF">then</font></b> - do_something -<b><font color="#0000FF">fi</font></b> +<pre><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#bb00ff">"${my_var}"</font><font color="#ff0000"> -gt </font><font color="#bb00ff">3</font><font color="#ff0000"> </font><font color="#F3E651">]];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> do_something</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <h3 style='display: inline' id='PIPESTATUS'>PIPESTATUS</h3><br /> @@ -420,10 +420,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>tar -cf - <font color="#990000">./*</font> <font color="#990000">|</font> <font color="#990000">(</font> cd <font color="#FF0000">"${dir}"</font> <font color="#990000">&&</font> tar -xf - <font color="#990000">)</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">((</font> PIPESTATUS<font color="#990000">[</font><font color="#993399">0</font><font color="#990000">]</font> <font color="#990000">!=</font> <font color="#993399">0</font> <font color="#990000">||</font> PIPESTATUS<font color="#990000">[</font><font color="#993399">1</font><font color="#990000">]</font> <font color="#990000">!=</font> <font color="#993399">0</font> <font color="#990000">));</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"Unable to tar files to ${dir}"</font> <font color="#990000">>&</font><font color="#993399">2</font> -<b><font color="#0000FF">fi</font></b> +<pre><font color="#ff0000">tar -cf - </font><font color="#F3E651">./*</font><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000"> cd </font><font color="#bb00ff">"${dir}"</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> tar -xf - </font><font color="#F3E651">)</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">((</font><font color="#ff0000"> PIPESTATUS</font><font color="#F3E651">[</font><font color="#bb00ff">0</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">!=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">||</font><font color="#ff0000"> PIPESTATUS</font><font color="#F3E651">[</font><font color="#bb00ff">1</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">!=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">));</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Unable to tar files to ${dir}"</font><font color="#ff0000"> </font><font color="#F3E651">>&</font><font color="#bb00ff">2</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>However, as PIPESTATUS will be overwritten as soon as you do any other command, if you need to act differently on errors based on where it happened in the pipe, you'll need to assign PIPESTATUS to another variable immediately after running the command (don't forget that [ is a command and will wipe out PIPESTATUS).</span><br /> @@ -432,14 +432,14 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>tar -cf - <font color="#990000">./*</font> <font color="#990000">|</font> <font color="#990000">(</font> cd <font color="#FF0000">"${DIR}"</font> <font color="#990000">&&</font> tar -xf - <font color="#990000">)</font> -<font color="#009900">return_codes</font><font color="#990000">=(</font> <font color="#FF0000">"${PIPESTATUS[@]}"</font> <font color="#990000">)</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">((</font> return_codes<font color="#990000">[</font><font color="#993399">0</font><font color="#990000">]</font> <font color="#990000">!=</font> <font color="#993399">0</font> <font color="#990000">));</font> <b><font color="#0000FF">then</font></b> - do_something -<b><font color="#0000FF">fi</font></b> -<b><font color="#0000FF">if</font></b> <font color="#990000">((</font> return_codes<font color="#990000">[</font><font color="#993399">1</font><font color="#990000">]</font> <font color="#990000">!=</font> <font color="#993399">0</font> <font color="#990000">));</font> <b><font color="#0000FF">then</font></b> - do_something_else -<b><font color="#0000FF">fi</font></b> +<pre><font color="#ff0000">tar -cf - </font><font color="#F3E651">./*</font><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000"> cd </font><font color="#bb00ff">"${DIR}"</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> tar -xf - </font><font color="#F3E651">)</font> +<font color="#ff0000">return_codes</font><font color="#F3E651">=(</font><font color="#ff0000"> </font><font color="#bb00ff">"${PIPESTATUS[@]}"</font><font color="#ff0000"> </font><font color="#F3E651">)</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">((</font><font color="#ff0000"> return_codes</font><font color="#F3E651">[</font><font color="#bb00ff">0</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">!=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">));</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> do_something</font> +<b><font color="#ffffff">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">((</font><font color="#ff0000"> return_codes</font><font color="#F3E651">[</font><font color="#bb00ff">1</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">!=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">));</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> do_something_else</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <h2 style='display: inline' id='UsecommonsenseandBECONSISTENT'>Use common sense and BE CONSISTENT.</h2><br /> diff --git a/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html b/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html index edbdab2b..4c1e8c40 100644 --- a/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html +++ b/gemfeed/2021-06-05-gemtexter-one-bash-script-to-rule-it-all.html @@ -94,18 +94,18 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>paul <b><font color="#0000FF">in</font></b> uranus <b><font color="#0000FF">in</font></b> gemtexter on 🌱 main -❯ wc -l gemtexter lib<font color="#990000">/*</font> - <font color="#993399">117</font> gemtexter - <font color="#993399">59</font> lib/assert<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">128</font> lib/atomfeed<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">64</font> lib/gemfeed<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">161</font> lib/generate<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">50</font> lib/git<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">162</font> lib/html<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">30</font> lib/log<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">63</font> lib/md<font color="#990000">.</font><b><font color="#0000FF">source</font></b><font color="#990000">.</font>sh - <font color="#993399">834</font> total +<pre><font color="#ff0000">paul </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> uranus </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> gemtexter on 🌱 main</font> +<font color="#ff0000">❯ wc -l gemtexter lib</font><font color="#F3E651">/*</font> +<font color="#ff0000"> </font><font color="#bb00ff">117</font><font color="#ff0000"> gemtexter</font> +<font color="#ff0000"> </font><font color="#bb00ff">59</font><font color="#ff0000"> lib/assert</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">128</font><font color="#ff0000"> lib/atomfeed</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">64</font><font color="#ff0000"> lib/gemfeed</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">161</font><font color="#ff0000"> lib/generate</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">50</font><font color="#ff0000"> lib/git</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">162</font><font color="#ff0000"> lib/html</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">30</font><font color="#ff0000"> lib/log</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">63</font><font color="#ff0000"> lib/md</font><font color="#F3E651">.</font><b><font color="#ffffff">source</font></b><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000"> </font><font color="#bb00ff">834</font><font color="#ff0000"> total</font> </pre> <br /> <span>This way, the script could grow far beyond 1000 lines of code and still be maintainable. With more features, execution speed may slowly become a problem, though. I already notice that Gemtexter doesn't produce results instantly but requires few seconds of runtime already. That's not a problem yet, though. </span><br /> @@ -140,9 +140,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#009900">gemtext</font><font color="#990000">=</font><font color="#FF0000">'=> http://example.org Description of the link'</font> -assert<font color="#990000">::</font>equals <font color="#FF0000">"$(generate::make_link html "</font><font color="#009900">$gemtext</font><font color="#FF0000">")"</font> <font color="#990000">\</font> - <font color="#FF0000">'<a class="textlink" href="http://example.org">Description of the link</a><br />'</font> +<pre><font color="#ff0000">gemtext</font><font color="#F3E651">=</font><font color="#bb00ff">'=> http://example.org Description of the link'</font> +<font color="#ff0000">assert</font><font color="#F3E651">::</font><font color="#ff0000">equals </font><font color="#bb00ff">"$(generate::make_link html "</font><font color="#ff0000">$gemtext</font><font color="#bb00ff">")"</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#bb00ff">'<a class="textlink" href="http://example.org">Description of the link</a><br />'</font> </pre> <br /> <h3 style='display: inline' id='Markdownunittestexample'>Markdown unit test example</h3><br /> @@ -151,9 +151,9 @@ assert<font color="#990000">::</font>equals <font color="#FF0000">"$(generate::m by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#009900">gemtext</font><font color="#990000">=</font><font color="#FF0000">'=> http://example.org Description of the link'</font> -assert<font color="#990000">::</font>equals <font color="#FF0000">"$(generate::make_link md "</font><font color="#009900">$gemtext</font><font color="#FF0000">")"</font> <font color="#990000">\</font> - <font color="#FF0000">'[Description of the link](http://example.org) '</font> +<pre><font color="#ff0000">gemtext</font><font color="#F3E651">=</font><font color="#bb00ff">'=> http://example.org Description of the link'</font> +<font color="#ff0000">assert</font><font color="#F3E651">::</font><font color="#ff0000">equals </font><font color="#bb00ff">"$(generate::make_link md "</font><font color="#ff0000">$gemtext</font><font color="#bb00ff">")"</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#bb00ff">'[Description of the link](http://example.org) '</font> </pre> <br /> <h2 style='display: inline' id='HandcraftedHTMLstyles'>Handcrafted HTML styles</h2><br /> diff --git a/gemfeed/2022-08-27-gemtexter-1.1.0-lets-gemtext-again.html b/gemfeed/2022-08-27-gemtexter-1.1.0-lets-gemtext-again.html index abc13376..ab84385c 100644 --- a/gemfeed/2022-08-27-gemtexter-1.1.0-lets-gemtext-again.html +++ b/gemfeed/2022-08-27-gemtexter-1.1.0-lets-gemtext-again.html @@ -40,23 +40,23 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">check_dependencies ()</font></b> { - <i><font color="#9A1900"># At least, Bash 5 is required</font></i> - <b><font color="#0000FF">local</font></b> -i <font color="#009900">required_version</font><font color="#990000">=</font><font color="#993399">5</font> - <font color="#009900">IFS</font><font color="#990000">=.</font> <b><font color="#0000FF">read</font></b> -ra version <font color="#990000"><<<</font> <font color="#FF0000">"$BASH_VERSION"</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"${version[0]}"</font> -lt <font color="#009900">$required_version</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - log ERROR <font color="#FF0000">"ERROR, </font><font color="#CC33CC">\"</font><font color="#FF0000">bash</font><font color="#CC33CC">\"</font><font color="#FF0000"> must be at least at major version $required_version!"</font> - <b><font color="#0000FF">exit</font></b> <font color="#993399">2</font> - <b><font color="#0000FF">fi</font></b> +<pre><font color="#7bc710">check_dependencies ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><i><font color="#ababab"># At least, Bash 5 is required</font></i> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">required_version</font><font color="#F3E651">=</font><font color="#bb00ff">5</font> +<font color="#ff0000"> </font><font color="#ff0000">IFS</font><font color="#F3E651">=.</font><font color="#ff0000"> </font><b><font color="#ffffff">read</font></b><font color="#ff0000"> -ra version </font><font color="#F3E651"><<<</font><font color="#ff0000"> </font><font color="#bb00ff">"$BASH_VERSION"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"${version[0]}"</font><font color="#ff0000"> -lt </font><font color="#ff0000">$required_version</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> log ERROR </font><font color="#bb00ff">"ERROR, </font><font color="#ffffff">\"</font><font color="#bb00ff">bash</font><font color="#ffffff">\"</font><font color="#bb00ff"> must be at least at major version $required_version!"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> - <i><font color="#9A1900"># These must be the GNU versions of the commands</font></i> - <b><font color="#0000FF">for</font></b> tool <b><font color="#0000FF">in</font></b> <font color="#009900">$DATE</font> <font color="#009900">$SED</font> <font color="#009900">$GREP</font><font color="#990000">;</font> <b><font color="#0000FF">do</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">!</font> <font color="#009900">$tool</font> --version <font color="#990000">|</font> grep -q GNU<font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - log ERROR <font color="#FF0000">"ERROR, </font><font color="#CC33CC">\"</font><font color="#FF0000">$tool</font><font color="#CC33CC">\"</font><font color="#FF0000"> command is not the GNU version, please install!"</font> - <b><font color="#0000FF">exit</font></b> <font color="#993399">2</font> - <b><font color="#0000FF">fi</font></b> - <b><font color="#0000FF">done</font></b> -} +<font color="#ff0000"> </font><i><font color="#ababab"># These must be the GNU versions of the commands</font></i> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> tool </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> </font><font color="#ff0000">$DATE</font><font color="#ff0000"> </font><font color="#ff0000">$SED</font><font color="#ff0000"> </font><font color="#ff0000">$GREP</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> </font><font color="#ff0000">$tool</font><font color="#ff0000"> --version </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q GNU</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> log ERROR </font><font color="#bb00ff">"ERROR, </font><font color="#ffffff">\"</font><font color="#bb00ff">$tool</font><font color="#ffffff">\"</font><font color="#bb00ff"> command is not the GNU version, please install!"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">done</font></b> +<font color="#ff0000">}</font> </pre> <br /> <span>Especially macOS users didn't read the <span class='inlinecode'>README</span> carefully enough to install GNU Grep, GNU Sed and GNU Date before using Gemtexter.</span><br /> @@ -77,7 +77,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">.</font>/gemtexter --generate <font color="#FF0000">'.*hello.*'</font> +<pre><font color="#F3E651">.</font><font color="#ff0000">/gemtexter --generate </font><font color="#bb00ff">'.*hello.*'</font> </pre> <br /> <h3 style='display: inline' id='Revampedgitsupport'>Revamped <span class='inlinecode'>git</span> support</h3><br /> diff --git a/gemfeed/2022-11-24-i-tried-emacs-but-i-switched-back-to-neovim.html b/gemfeed/2022-11-24-i-tried-emacs-but-i-switched-back-to-neovim.html index 8a1fa368..05bde577 100644 --- a/gemfeed/2022-11-24-i-tried-emacs-but-i-switched-back-to-neovim.html +++ b/gemfeed/2022-11-24-i-tried-emacs-but-i-switched-back-to-neovim.html @@ -79,10 +79,10 @@ Art by \ \_! / __! by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">" Clipboard</font></i> -vnoremap ,<b><font color="#0000FF">y</font></b> !pbcopy<font color="#FF6600"><CR></font>ugv -vnoremap ,<b><font color="#0000FF">i</font></b> !pbpaste<font color="#FF6600"><CR></font> -nmap ,<b><font color="#0000FF">i</font></b> !wpbpaste<font color="#FF6600"><CR></font> +<pre><i><font color="#ababab">" Clipboard</font></i> +<font color="#ff0000">vnoremap ,</font><b><font color="#ffffff">y</font></b><font color="#ff0000"> !pbcopy</font><font color="#ff0000"><CR></font><font color="#ff0000">ugv</font> +<font color="#ff0000">vnoremap ,</font><b><font color="#ffffff">i</font></b><font color="#ff0000"> !pbpaste</font><font color="#ff0000"><CR></font> +<font color="#ff0000">nmap ,</font><b><font color="#ffffff">i</font></b><font color="#ff0000"> !wpbpaste</font><font color="#ff0000"><CR></font> </pre> <br /> <span>That's only a very few lines and does precisely what I want. It's quick and dirty but get's the job done! If VimScript becomes too cumbersome, I can use Lua for NeoVim scripting.</span><br /> diff --git a/gemfeed/2023-03-25-gemtexter-2.0.0-lets-gemtext-again-2.html b/gemfeed/2023-03-25-gemtexter-2.0.0-lets-gemtext-again-2.html index 478cee72..4b8a9c74 100644 --- a/gemfeed/2023-03-25-gemtexter-2.0.0-lets-gemtext-again-2.html +++ b/gemfeed/2023-03-25-gemtexter-2.0.0-lets-gemtext-again-2.html @@ -109,8 +109,8 @@ Blablabla... by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">declare</font></b> -xr <font color="#009900">PRE_GENERATE_HOOK</font><font color="#990000">=.</font>/pre_generate_hook<font color="#990000">.</font>sh -<b><font color="#0000FF">declare</font></b> -xr <font color="#009900">POST_PUBLISH_HOOK</font><font color="#990000">=.</font>/post_publish_hook<font color="#990000">.</font>sh +<pre><b><font color="#ffffff">declare</font></b><font color="#ff0000"> -xr </font><font color="#ff0000">PRE_GENERATE_HOOK</font><font color="#F3E651">=.</font><font color="#ff0000">/pre_generate_hook</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<b><font color="#ffffff">declare</font></b><font color="#ff0000"> -xr </font><font color="#ff0000">POST_PUBLISH_HOOK</font><font color="#F3E651">=.</font><font color="#ff0000">/post_publish_hook</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> </pre> <br /> <h2 style='display: inline' id='UseofsaferBashoptions'>Use of safer Bash options</h2><br /> @@ -127,10 +127,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat gemfeed<font color="#990000">/</font><font color="#993399">2023</font>-<font color="#993399">02</font>-<font color="#993399">26</font>-title-here<font color="#990000">.</font>gmi -<i><font color="#9A1900"># Title here</font></i> +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat gemfeed</font><font color="#F3E651">/</font><font color="#bb00ff">2023</font><font color="#ff0000">-</font><font color="#bb00ff">02</font><font color="#ff0000">-</font><font color="#bb00ff">26</font><font color="#ff0000">-title-here</font><font color="#F3E651">.</font><font color="#ff0000">gmi</font> +<i><font color="#ababab"># Title here</font></i> -The remaining content of the Gemtext file<font color="#990000">...</font> +<font color="#ff0000">The remaining content of the Gemtext file</font><font color="#F3E651">...</font> </pre> <br /> <span>Gemtexter will add a line starting with <span class='inlinecode'>> Published at ...</span> now. Any subsequent Atom feed generation will then use that date.</span><br /> @@ -139,12 +139,12 @@ The remaining content of the Gemtext file<font color="#990000">...</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat gemfeed<font color="#990000">/</font><font color="#993399">2023</font>-<font color="#993399">02</font>-<font color="#993399">26</font>-title-here<font color="#990000">.</font>gmi -<i><font color="#9A1900"># Title here</font></i> +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat gemfeed</font><font color="#F3E651">/</font><font color="#bb00ff">2023</font><font color="#ff0000">-</font><font color="#bb00ff">02</font><font color="#ff0000">-</font><font color="#bb00ff">26</font><font color="#ff0000">-title-here</font><font color="#F3E651">.</font><font color="#ff0000">gmi</font> +<i><font color="#ababab"># Title here</font></i> -<font color="#990000">></font> Published at <font color="#993399">2023</font>-<font color="#993399">02</font>-26T21<font color="#990000">:</font><font color="#993399">43</font><font color="#990000">:</font><font color="#993399">51</font><font color="#990000">+</font><font color="#993399">01</font><font color="#990000">:</font><font color="#993399">00</font> +<font color="#F3E651">></font><font color="#ff0000"> Published at </font><font color="#bb00ff">2023</font><font color="#ff0000">-</font><font color="#bb00ff">02</font><font color="#ff0000">-26T21</font><font color="#F3E651">:</font><font color="#bb00ff">43</font><font color="#F3E651">:</font><font color="#bb00ff">51</font><font color="#F3E651">+</font><font color="#bb00ff">01</font><font color="#F3E651">:</font><font color="#bb00ff">00</font> -The remaining content of the Gemtext file<font color="#990000">...</font> +<font color="#ff0000">The remaining content of the Gemtext file</font><font color="#F3E651">...</font> </pre> <br /> <h2 style='display: inline' id='XMLLintsupport'>XMLLint support</h2><br /> diff --git a/gemfeed/2023-04-09-algorithms-and-data-structures-in-golang-part-1.html b/gemfeed/2023-04-09-algorithms-and-data-structures-in-golang-part-1.html index bc6d9b75..389b9b6f 100644 --- a/gemfeed/2023-04-09-algorithms-and-data-structures-in-golang-part-1.html +++ b/gemfeed/2023-04-09-algorithms-and-data-structures-in-golang-part-1.html @@ -40,19 +40,19 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> ds +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> ds</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"golang.org/x/exp/constraints"</font> -<font color="#990000">)</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"golang.org/x/exp/constraints"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">type</font></b> Integer <b><font color="#0000FF">interface</font></b> <font color="#FF0000">{</font> - constraints<font color="#990000">.</font>Integer -<font color="#FF0000">}</font> +<b><font color="#ffffff">type</font></b><font color="#ff0000"> Integer </font><b><font color="#ffffff">interface</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> constraints</font><font color="#F3E651">.</font><font color="#ff0000">Integer</font> +<font color="#F3E651">}</font> -<b><font color="#0000FF">type</font></b> Number <b><font color="#0000FF">interface</font></b> <font color="#FF0000">{</font> - constraints<font color="#990000">.</font>Integer <font color="#990000">|</font> constraints<font color="#990000">.</font>Float -<font color="#FF0000">}</font> +<b><font color="#ffffff">type</font></b><font color="#ff0000"> Number </font><b><font color="#ffffff">interface</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> constraints</font><font color="#F3E651">.</font><font color="#ff0000">Integer </font><font color="#F3E651">|</font><font color="#ff0000"> constraints</font><font color="#F3E651">.</font><font color="#ff0000">Float</font> +<font color="#F3E651">}</font> </pre> <br /> @@ -64,19 +64,19 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> ds +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> ds</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"fmt"</font> - <font color="#FF0000">"math/rand"</font> - <font color="#FF0000">"strings"</font> -<font color="#990000">)</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"fmt"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"math/rand"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"strings"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">type</font></b> ArrayList<font color="#990000">[</font>V Number<font color="#990000">]</font> <font color="#990000">[]</font>V +<b><font color="#ffffff">type</font></b><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">[]</font><font color="#ff0000">V</font> -<b><font color="#0000FF">func</font></b> NewArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">return</font></b> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> -<font color="#FF0000">}</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> NewArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#F3E651">}</font> </pre> <br /> <span>As you can see, the code uses Go generics, which I refactored recently. Besides the default constructor (which only returns an empty <span class='inlinecode'>ArrayList</span> with a given capacity), there are also a bunch of special constructors. <span class='inlinecode'>NewRandomArrayList</span> is returning an <span class='inlinecode'>ArrayList</span> with random numbers, <span class='inlinecode'>NewAscendingArrayList</span> and <span class='inlinecode'>NewDescendingArrayList</span> are returning <span class='inlinecode'>ArrayList</span>s in either ascending or descending order. They all will be used later on for testing and benchmarking the algorithms.</span><br /> @@ -85,35 +85,35 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> NewRandomArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l<font color="#990000">,</font> max int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> l<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">if</font></b> max <font color="#990000">></font> <font color="#993399">0</font> <font color="#FF0000">{</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>rand<font color="#990000">.</font><b><font color="#000000">Intn</font></b><font color="#990000">(</font>max<font color="#990000">))</font> - <b><font color="#0000FF">continue</font></b> - <font color="#FF0000">}</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>rand<font color="#990000">.</font><b><font color="#000000">Int</font></b><font color="#990000">())</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> a -<font color="#FF0000">}</font> +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> NewRandomArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l</font><font color="#F3E651">,</font><font color="#ff0000"> max int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> l</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> max </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">rand</font><font color="#F3E651">.</font><font color="#7bc710">Intn</font><font color="#F3E651">(</font><font color="#ff0000">max</font><font color="#F3E651">))</font> +<font color="#ff0000"> </font><b><font color="#ffffff">continue</font></b> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">rand</font><font color="#F3E651">.</font><font color="#7bc710">Int</font><font color="#F3E651">())</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a</font> +<font color="#F3E651">}</font> -<b><font color="#0000FF">func</font></b> NewAscendingArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> l<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>i<font color="#990000">)</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> a -<font color="#FF0000">}</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> NewAscendingArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> l</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">i</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a</font> +<font color="#F3E651">}</font> -<b><font color="#0000FF">func</font></b> NewDescendingArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> - j <font color="#990000">:=</font> l <font color="#990000">-</font> <font color="#993399">1</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> l<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>j<font color="#990000">)</font> - j<font color="#990000">--</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> a -<font color="#FF0000">}</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> NewDescendingArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#ff0000"> j </font><font color="#F3E651">:=</font><font color="#ff0000"> l </font><font color="#F3E651">-</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> l</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">j</font><font color="#F3E651">)</font> +<font color="#ff0000"> j</font><font color="#F3E651">--</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a</font> +<font color="#F3E651">}</font> </pre> <br /> <h2 style='display: inline' id='Helpermethods'>Helper methods</h2><br /> @@ -124,25 +124,25 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> <font color="#990000">(</font>a ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> <b><font color="#000000">FirstN</font></b><font color="#990000">(</font>n int<font color="#990000">)</font> <font color="#009900">string</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">var</font></b> sb strings<font color="#990000">.</font>Builder - j <font color="#990000">:=</font> n +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">a ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> </font><font color="#7bc710">FirstN</font><font color="#F3E651">(</font><font color="#ff0000">n int</font><font color="#F3E651">)</font><font color="#ff0000"> </font><b><font color="#F35E1E">string</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">var</font></b><font color="#ff0000"> sb strings</font><font color="#F3E651">.</font><font color="#ff0000">Builder</font> +<font color="#ff0000"> j </font><font color="#F3E651">:=</font><font color="#ff0000"> n</font> - l <font color="#990000">:=</font> <b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">)</font> - <b><font color="#0000FF">if</font></b> j <font color="#990000">></font> l <font color="#FF0000">{</font> - j <font color="#990000">=</font> l - <font color="#FF0000">}</font> +<font color="#ff0000"> l </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> j </font><font color="#F3E651">></font><font color="#ff0000"> l </font><font color="#F3E651">{</font> +<font color="#ff0000"> j </font><font color="#F3E651">=</font><font color="#ff0000"> l</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> j<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - fmt<font color="#990000">.</font><b><font color="#000000">Fprintf</font></b><font color="#990000">(&</font>sb<font color="#990000">,</font> <font color="#FF0000">"%v "</font><font color="#990000">,</font> a<font color="#990000">[</font>i<font color="#990000">])</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> j</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> fmt</font><font color="#F3E651">.</font><font color="#7bc710">Fprintf</font><font color="#F3E651">(&</font><font color="#ff0000">sb</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">"%v "</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">])</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">if</font></b> j <font color="#990000"><</font> l <font color="#FF0000">{</font> - fmt<font color="#990000">.</font><b><font color="#000000">Fprintf</font></b><font color="#990000">(&</font>sb<font color="#990000">,</font> <font color="#FF0000">"... "</font><font color="#990000">)</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> j </font><font color="#F3E651"><</font><font color="#ff0000"> l </font><font color="#F3E651">{</font> +<font color="#ff0000"> fmt</font><font color="#F3E651">.</font><font color="#7bc710">Fprintf</font><font color="#F3E651">(&</font><font color="#ff0000">sb</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">"... "</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">return</font></b> sb<font color="#990000">.</font><b><font color="#000000">String</font></b><font color="#990000">()</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> sb</font><font color="#F3E651">.</font><font color="#7bc710">String</font><font color="#F3E651">()</font> +<font color="#F3E651">}</font> </pre> <br /> <span>The <span class='inlinecode'>Sorted</span> method checks whether the <span class='inlinecode'>ArrayList</span> is sorted. This will be used by the unit tests later on:</span><br /> @@ -151,14 +151,14 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> <font color="#990000">(</font>a ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> <b><font color="#000000">Sorted</font></b><font color="#990000">()</font> <font color="#009900">bool</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">)</font> <font color="#990000">-</font> <font color="#993399">1</font><font color="#990000">;</font> i <font color="#990000">></font> <font color="#993399">0</font><font color="#990000">;</font> i<font color="#990000">--</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">if</font></b> a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000"><</font> a<font color="#990000">[</font>i<font color="#990000">-</font><font color="#993399">1</font><font color="#990000">]</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">return</font></b> false - <font color="#FF0000">}</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> true -<font color="#FF0000">}</font> +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">a ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> </font><font color="#7bc710">Sorted</font><font color="#F3E651">()</font><font color="#ff0000"> </font><b><font color="#F35E1E">bool</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">-</font><font color="#ff0000"> </font><font color="#bb00ff">1</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">--</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651"><</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">-</font><font color="#bb00ff">1</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> false</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> true</font> +<font color="#F3E651">}</font> </pre> <br /> <span>And the last utility method used is <span class='inlinecode'>Swap</span>, which allows swapping the values of two indices in the <span class='inlinecode'>ArrayList</span>:</span><br /> @@ -167,11 +167,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> <font color="#990000">(</font>a ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> <b><font color="#000000">Swap</font></b><font color="#990000">(</font>i<font color="#990000">,</font> j int<font color="#990000">)</font> <font color="#FF0000">{</font> - aux <font color="#990000">:=</font> a<font color="#990000">[</font>i<font color="#990000">]</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> a<font color="#990000">[</font>j<font color="#990000">]</font> - a<font color="#990000">[</font>j<font color="#990000">]</font> <font color="#990000">=</font> aux -<font color="#FF0000">}</font> +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">a ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> </font><font color="#7bc710">Swap</font><font color="#F3E651">(</font><font color="#ff0000">i</font><font color="#F3E651">,</font><font color="#ff0000"> j int</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> aux </font><font color="#F3E651">:=</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">j</font><font color="#F3E651">]</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">j</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> aux</font> +<font color="#F3E651">}</font> </pre> <br /> @@ -184,40 +184,40 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> sort +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> sort</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"codeberg.org/snonux/algorithms/ds"</font> - <font color="#FF0000">"sync"</font> - <font color="#FF0000">"time"</font> -<font color="#990000">)</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"codeberg.org/snonux/algorithms/ds"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"sync"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"time"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">func</font></b> Sleep<font color="#990000">[</font>V ds<font color="#990000">.</font>Integer<font color="#990000">](</font>a ds<font color="#990000">.</font>ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> ds<font color="#990000">.</font>ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - sorted <font color="#990000">:=</font> ds<font color="#990000">.</font>NewArrayList<font color="#990000">[</font>V<font color="#990000">](</font><b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">))</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> Sleep</font><font color="#F3E651">[</font><font color="#ff0000">V ds</font><font color="#F3E651">.</font><font color="#ff0000">Integer</font><font color="#F3E651">](</font><font color="#ff0000">a ds</font><font color="#F3E651">.</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> ds</font><font color="#F3E651">.</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> sorted </font><font color="#F3E651">:=</font><font color="#ff0000"> ds</font><font color="#F3E651">.</font><font color="#ff0000">NewArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">](</font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">))</font> - numCh <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font><b><font color="#0000FF">chan</font></b> V<font color="#990000">)</font> - <b><font color="#0000FF">var</font></b> wg sync<font color="#990000">.</font>WaitGroup - wg<font color="#990000">.</font><b><font color="#000000">Add</font></b><font color="#990000">(</font><b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">))</font> +<font color="#ff0000"> numCh </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><b><font color="#ffffff">chan</font></b><font color="#ff0000"> V</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">var</font></b><font color="#ff0000"> wg sync</font><font color="#F3E651">.</font><font color="#ff0000">WaitGroup</font> +<font color="#ff0000"> wg</font><font color="#F3E651">.</font><font color="#7bc710">Add</font><font color="#F3E651">(</font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">))</font> - <b><font color="#0000FF">go</font></b> <b><font color="#0000FF">func</font></b><font color="#990000">()</font> <font color="#FF0000">{</font> - wg<font color="#990000">.</font><b><font color="#000000">Wait</font></b><font color="#990000">()</font> - <b><font color="#000000">close</font></b><font color="#990000">(</font>numCh<font color="#990000">)</font> - <font color="#FF0000">}</font><font color="#990000">()</font> +<font color="#ff0000"> </font><b><font color="#ffffff">go</font></b><font color="#ff0000"> </font><b><font color="#ffffff">func</font></b><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> wg</font><font color="#F3E651">.</font><font color="#7bc710">Wait</font><font color="#F3E651">()</font> +<font color="#ff0000"> </font><font color="#7bc710">close</font><font color="#F3E651">(</font><font color="#ff0000">numCh</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">()</font> - <b><font color="#0000FF">for</font></b> _<font color="#990000">,</font> num <font color="#990000">:=</font> <b><font color="#0000FF">range</font></b> a <font color="#FF0000">{</font> - <b><font color="#0000FF">go</font></b> <b><font color="#0000FF">func</font></b><font color="#990000">(</font>num V<font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">defer</font></b> wg<font color="#990000">.</font><b><font color="#000000">Done</font></b><font color="#990000">()</font> - time<font color="#990000">.</font><b><font color="#000000">Sleep</font></b><font color="#990000">(</font>time<font color="#990000">.</font><b><font color="#000000">Duration</font></b><font color="#990000">(</font>num<font color="#990000">)</font> <font color="#990000">*</font> time<font color="#990000">.</font>Second<font color="#990000">)</font> - numCh <font color="#990000"><-</font> num - <font color="#FF0000">}</font><font color="#990000">(</font>num<font color="#990000">)</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> _</font><font color="#F3E651">,</font><font color="#ff0000"> num </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><b><font color="#ffffff">range</font></b><font color="#ff0000"> a </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">go</font></b><font color="#ff0000"> </font><b><font color="#ffffff">func</font></b><font color="#F3E651">(</font><font color="#ff0000">num V</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">defer</font></b><font color="#ff0000"> wg</font><font color="#F3E651">.</font><font color="#7bc710">Done</font><font color="#F3E651">()</font> +<font color="#ff0000"> time</font><font color="#F3E651">.</font><font color="#7bc710">Sleep</font><font color="#F3E651">(</font><font color="#ff0000">time</font><font color="#F3E651">.</font><font color="#7bc710">Duration</font><font color="#F3E651">(</font><font color="#ff0000">num</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000"> time</font><font color="#F3E651">.</font><font color="#ff0000">Second</font><font color="#F3E651">)</font> +<font color="#ff0000"> numCh </font><font color="#F3E651"><-</font><font color="#ff0000"> num</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">(</font><font color="#ff0000">num</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">for</font></b> num <font color="#990000">:=</font> <b><font color="#0000FF">range</font></b> numCh <font color="#FF0000">{</font> - sorted <font color="#990000">=</font> <b><font color="#000000">append</font></b><font color="#990000">(</font>sorted<font color="#990000">,</font> num<font color="#990000">)</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> num </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><b><font color="#ffffff">range</font></b><font color="#ff0000"> numCh </font><font color="#F3E651">{</font> +<font color="#ff0000"> sorted </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">append</font><font color="#F3E651">(</font><font color="#ff0000">sorted</font><font color="#F3E651">,</font><font color="#ff0000"> num</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">return</font></b> sorted -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> sorted</font> +<font color="#F3E651">}</font> </pre> <br /> <span>This Go code implements the sleep sort algorithm using generics and goroutines. The main function <span class='inlinecode'>Sleep[V ds.Integer](a ds.ArrayList[V]) ds.ArrayList[V]</span> takes a generic <span class='inlinecode'>ArrayList</span> as input and returns a sorted <span class='inlinecode'>ArrayList</span>. The code creates a separate goroutine for each element in the input array, sleeps for a duration proportional to the element's value, and then sends the element to a channel. Another goroutine waits for all the sleeping goroutines to finish and then closes the channel. The sorted result <span class='inlinecode'>ArrayList</span> is constructed by appending the elements received from the channel in the order they arrive. The <span class='inlinecode'>sync.WaitGroup</span> is used to synchronize goroutines and ensure that all of them have completed before closing the channel.</span><br /> @@ -230,22 +230,22 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> sort +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> sort</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"fmt"</font> - <font color="#FF0000">"testing"</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"fmt"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"testing"</font> - <font color="#FF0000">"codeberg.org/snonux/algorithms/ds"</font> -<font color="#990000">)</font> +<font color="#ff0000"> </font><font color="#bb00ff">"codeberg.org/snonux/algorithms/ds"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">func</font></b> <b><font color="#000000">TestSleepSort</font></b><font color="#990000">(</font>t <font color="#990000">*</font>testing<font color="#990000">.</font>T<font color="#990000">)</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> ds<font color="#990000">.</font>NewRandomArrayList<font color="#990000">[</font>int<font color="#990000">](</font><font color="#993399">10</font><font color="#990000">,</font> <font color="#993399">10</font><font color="#990000">)</font> - a <font color="#990000">=</font> <b><font color="#000000">Sleep</font></b><font color="#990000">(</font>a<font color="#990000">)</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">!</font>a<font color="#990000">.</font><b><font color="#000000">Sorted</font></b><font color="#990000">()</font> <font color="#FF0000">{</font> - t<font color="#990000">.</font><b><font color="#000000">Errorf</font></b><font color="#990000">(</font><font color="#FF0000">"Array not sorted: %v"</font><font color="#990000">,</font> a<font color="#990000">)</font> - <font color="#FF0000">}</font> -<font color="#FF0000">}</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#7bc710">TestSleepSort</font><font color="#F3E651">(</font><font color="#ff0000">t </font><font color="#F3E651">*</font><font color="#ff0000">testing</font><font color="#F3E651">.</font><font color="#ff0000">T</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> ds</font><font color="#F3E651">.</font><font color="#ff0000">NewRandomArrayList</font><font color="#F3E651">[</font><font color="#ff0000">int</font><font color="#F3E651">](</font><font color="#bb00ff">10</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">10</font><font color="#F3E651">)</font> +<font color="#ff0000"> a </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">Sleep</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000">a</font><font color="#F3E651">.</font><font color="#7bc710">Sorted</font><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> t</font><font color="#F3E651">.</font><font color="#7bc710">Errorf</font><font color="#F3E651">(</font><font color="#bb00ff">"Array not sorted: %v"</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#F3E651">}</font> </pre> <br /> <span>As you can see, it takes <span class='inlinecode'>9s</span> here for the algorithm to finish (which is the highest value in the <span class='inlinecode'>ArrayList</span>):</span><br /> @@ -254,11 +254,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>❯ go <b><font color="#0000FF">test</font></b> <font color="#990000">.</font>/sort -v -run SleepSort -<font color="#990000">===</font> RUN TestSleepSort ---- PASS<font color="#990000">:</font> TestSleepSort <font color="#990000">(</font><font color="#993399">9</font><font color="#990000">.</font>00s<font color="#990000">)</font> -PASS -ok codeberg<font color="#990000">.</font>org/snonux/algorithms/sort <font color="#993399">9</font><font color="#990000">.</font>002s +<pre><font color="#ff0000">❯ go </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/sort -v -run SleepSort</font> +<font color="#F3E651">===</font><font color="#ff0000"> RUN TestSleepSort</font> +<font color="#ff0000">--- PASS</font><font color="#F3E651">:</font><font color="#ff0000"> TestSleepSort </font><font color="#F3E651">(</font><font color="#bb00ff">9</font><font color="#F3E651">.</font><font color="#ff0000">00s</font><font color="#F3E651">)</font> +<font color="#ff0000">PASS</font> +<font color="#ff0000">ok codeberg</font><font color="#F3E651">.</font><font color="#ff0000">org/snonux/algorithms/sort </font><font color="#bb00ff">9</font><font color="#F3E651">.</font><font color="#ff0000">002s</font> </pre> <br /> <span>I won't write any benchmark for sleep sort; that will be done for the algorithms to come in this series :-).</span><br /> diff --git a/gemfeed/2023-05-01-unveiling-guprecords:-uptime-records-with-raku.html b/gemfeed/2023-05-01-unveiling-guprecords:-uptime-records-with-raku.html index 29e46420..2afa6d09 100644 --- a/gemfeed/2023-05-01-unveiling-guprecords:-uptime-records-with-raku.html +++ b/gemfeed/2023-05-01-unveiling-guprecords:-uptime-records-with-raku.html @@ -65,7 +65,7 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ raku guprecords<font color="#990000">.</font>raku --stats<font color="#990000">=</font><font color="#009900">dir</font><font color="#990000">=</font><font color="#009900">$HOME</font>/git/uprecords/stats --all +<pre><font color="#ff0000">$ raku guprecords</font><font color="#F3E651">.</font><font color="#ff0000">raku --stats</font><font color="#F3E651">=</font><font color="#ff0000">dir</font><font color="#F3E651">=</font><font color="#ff0000">$HOME</font><font color="#ff0000">/git/uprecords/stats --all</font> </pre> <br /> <span>This command will generate a comprehensive uptime report from the collected statistics, making it easy to review and enjoy the data.</span><br /> diff --git a/gemfeed/2023-06-01-kiss-server-monitoring-with-gogios.html b/gemfeed/2023-06-01-kiss-server-monitoring-with-gogios.html index f79b7b62..1aea4149 100644 --- a/gemfeed/2023-06-01-kiss-server-monitoring-with-gogios.html +++ b/gemfeed/2023-06-01-kiss-server-monitoring-with-gogios.html @@ -98,11 +98,11 @@ Have a nice day! by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>git clone https<font color="#990000">:</font>//codeberg<font color="#990000">.</font>org/snonux/gogios<font color="#990000">.</font>git -cd gogios -go build -o gogios cmd/gogios/main<font color="#990000">.</font>go -doas cp gogios /usr/local/bin/gogios -doas chmod <font color="#993399">755</font> /usr/local/bin/gogios +<pre><font color="#ff0000">git clone https</font><font color="#F3E651">:</font><font color="#ff0000">//codeberg</font><font color="#F3E651">.</font><font color="#ff0000">org/snonux/gogios</font><font color="#F3E651">.</font><font color="#ff0000">git</font> +<font color="#ff0000">cd gogios</font> +<font color="#ff0000">go build -o gogios cmd/gogios/main</font><font color="#F3E651">.</font><font color="#ff0000">go</font> +<font color="#ff0000">doas cp gogios /usr/local/bin/gogios</font> +<font color="#ff0000">doas chmod </font><font color="#bb00ff">755</font><font color="#ff0000"> /usr/local/bin/gogios</font> </pre> <br /> <span>You can use cross-compilation if you want to compile Gogios for OpenBSD on a Linux system without installing the Go compiler on OpenBSD. Follow these steps:</span><br /> @@ -111,9 +111,9 @@ doas chmod <font color="#993399">755</font> /usr/local/bin/gogios by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">export</font></b> <font color="#009900">GOOS</font><font color="#990000">=</font>openbsd -<b><font color="#0000FF">export</font></b> <font color="#009900">GOARCH</font><font color="#990000">=</font>amd64 -go build -o gogios cmd/gogios/main<font color="#990000">.</font>go +<pre><b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">GOOS</font><font color="#F3E651">=</font><font color="#ff0000">openbsd</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">GOARCH</font><font color="#F3E651">=</font><font color="#ff0000">amd64</font> +<font color="#ff0000">go build -o gogios cmd/gogios/main</font><font color="#F3E651">.</font><font color="#ff0000">go</font> </pre> <br /> <span>On your OpenBSD system, copy the binary to <span class='inlinecode'>/usr/local/bin/gogios</span> and set the correct permissions as described in the previous section. All steps described here you could automate with your configuration management system of choice. I use Rexify, the friendly configuration management system, to automate the installation, but that is out of the scope of this document.</span><br /> @@ -128,11 +128,11 @@ go build -o gogios cmd/gogios/main<font color="#990000">.</font>go by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>doas adduser -group _gogios -batch _gogios -doas usermod -d /var/run/gogios _gogios -doas mkdir -p /var/run/gogios -doas chown _gogios<font color="#990000">:</font>_gogios /var/run/gogios -doas chmod <font color="#993399">750</font> /var/run/gogios +<pre><font color="#ff0000">doas adduser -group _gogios -batch _gogios</font> +<font color="#ff0000">doas usermod -d /var/run/gogios _gogios</font> +<font color="#ff0000">doas mkdir -p /var/run/gogios</font> +<font color="#ff0000">doas chown _gogios</font><font color="#F3E651">:</font><font color="#ff0000">_gogios /var/run/gogios</font> +<font color="#ff0000">doas chmod </font><font color="#bb00ff">750</font><font color="#ff0000"> /var/run/gogios</font> </pre> <br /> <span>Please note that creating a user and group might differ depending on your operating system. For other operating systems, consult their documentation for creating system users and groups.</span><br /> @@ -145,8 +145,8 @@ doas chmod <font color="#993399">750</font> /var/run/gogios by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>doas pkg_add monitoring-plugins -doas pkg_add nrpe <i><font color="#9A1900"># If you want to execute checks remotely via NRPE.</font></i> +<pre><font color="#ff0000">doas pkg_add monitoring-plugins</font> +<font color="#ff0000">doas pkg_add nrpe </font><i><font color="#ababab"># If you want to execute checks remotely via NRPE.</font></i> </pre> <br /> <span>Once the installation is complete, you can find the monitoring plugins in the <span class='inlinecode'>/usr/local/libexec/nagios</span> directory, which then can be configured to be used in <span class='inlinecode'>gogios.json</span>.</span><br /> @@ -173,41 +173,41 @@ echo 'This is a test email from OpenBSD.' | mail -s 'Test Email' by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">{</font> - "EmailTo": "<font color="#FF0000">paul@dev.buetow.org</font>"<font color="#990000">,</font> - "EmailFrom": "<font color="#FF0000">gogios@buetow.org</font>"<font color="#990000">,</font> - "CheckTimeoutS": <font color="#993399">10</font><font color="#990000">,</font> - "CheckConcurrency": <font color="#993399">2</font><font color="#990000">,</font> - "StateDir": "<font color="#FF0000">/var/run/gogios</font>"<font color="#990000">,</font> - "Checks": <font color="#990000">{</font> - "Check ICMP4 www.foo.zone": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_ping</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font> "-H"<font color="#990000">,</font> "www.foo.zone"<font color="#990000">,</font> "-4"<font color="#990000">,</font> "-w"<font color="#990000">,</font> "50,10%"<font color="#990000">,</font> "-c"<font color="#990000">,</font> "100,15%" <font color="#990000">],</font> - "Retries": <font color="#993399">3</font><font color="#990000">,</font> - "RetryInterval": <font color="#993399">10</font> - <font color="#990000">},</font> - "Check ICMP6 www.foo.zone": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_ping</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font> "-H"<font color="#990000">,</font> "www.foo.zone"<font color="#990000">,</font> "-6"<font color="#990000">,</font> "-w"<font color="#990000">,</font> "50,10%"<font color="#990000">,</font> "-c"<font color="#990000">,</font> "100,15%" <font color="#990000">],</font> - "Retries": <font color="#993399">3</font><font color="#990000">,</font> - "RetryInterval": <font color="#993399">10</font> - <font color="#990000">},</font> - "www.foo.zone HTTP IPv4": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_http</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font>"www.foo.zone"<font color="#990000">,</font> "-4"<font color="#990000">],</font> - "DependsOn": <font color="#990000">[</font>"Check ICMP4 www.foo.zone"<font color="#990000">]</font> - <font color="#990000">},</font> - "www.foo.zone HTTP IPv6": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_http</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font>"www.foo.zone"<font color="#990000">,</font> "-6"<font color="#990000">],</font> - "DependsOn": <font color="#990000">[</font>"Check ICMP6 www.foo.zone"<font color="#990000">]</font> - <font color="#990000">}</font> - "Check NRPE Disk Usage foo.zone": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_nrpe</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font>"-H"<font color="#990000">,</font> "foo.zone"<font color="#990000">,</font> "-c"<font color="#990000">,</font> "check_disk"<font color="#990000">,</font> "-p"<font color="#990000">,</font> "5666"<font color="#990000">,</font> "-4"<font color="#990000">]</font> - <font color="#990000">}</font> - <font color="#990000">}</font> -<font color="#990000">}</font> +<pre><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">EmailTo</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">paul@dev.buetow.org</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">EmailFrom</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">gogios@buetow.org</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">CheckTimeoutS</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">10</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">CheckConcurrency</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">2</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">StateDir</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/var/run/gogios</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Checks</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP4 www.foo.zone</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_ping</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-H</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-4</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-w</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">50,10%</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-c</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">100,15%</font><font color="#ff0000">"</font><font color="#ff0000"> </font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Retries</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">3</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">RetryInterval</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">10</font> +<font color="#ff0000"> </font><font color="#F3E651">},</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP6 www.foo.zone</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_ping</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-H</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-6</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-w</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">50,10%</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-c</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">100,15%</font><font color="#ff0000">"</font><font color="#ff0000"> </font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Retries</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">3</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">RetryInterval</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">10</font> +<font color="#ff0000"> </font><font color="#F3E651">},</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone HTTP IPv4</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_http</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-4</font><font color="#ff0000">"</font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">DependsOn</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP4 www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">]</font> +<font color="#ff0000"> </font><font color="#F3E651">},</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone HTTP IPv6</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_http</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-6</font><font color="#ff0000">"</font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">DependsOn</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP6 www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">]</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Check NRPE Disk Usage foo.zone</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_nrpe</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">-H</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-c</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">check_disk</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-p</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">5666</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-4</font><font color="#ff0000">"</font><font color="#F3E651">]</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#F3E651">}</font> </pre> <br /> <ul> @@ -236,7 +236,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>doas -u _gogios /usr/local/bin/gogios -cfg /etc/gogios<font color="#990000">.</font>json +<pre><font color="#ff0000">doas -u _gogios /usr/local/bin/gogios -cfg /etc/gogios</font><font color="#F3E651">.</font><font color="#ff0000">json</font> </pre> <br /> <span>To run Gogios via CRON on OpenBSD as the <span class='inlinecode'>gogios</span> user and check all services once per minute, follow these steps:</span><br /> diff --git a/gemfeed/2023-07-21-gemtexter-2.1.0-lets-gemtext-again-3.html b/gemfeed/2023-07-21-gemtexter-2.1.0-lets-gemtext-again-3.html index 732d285e..76372e00 100644 --- a/gemfeed/2023-07-21-gemtexter-2.1.0-lets-gemtext-again-3.html +++ b/gemfeed/2023-07-21-gemtexter-2.1.0-lets-gemtext-again-3.html @@ -57,9 +57,9 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -n <font color="#FF0000">"$foo"</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"$foo"</font> -<b><font color="#0000FF">fi</font></b> +<pre><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -n </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$foo"</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>Please run <span class='inlinecode'>source-highlight --lang-list</span> for a list of all supported languages.</span><br /> @@ -88,7 +88,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">declare</font></b> -xr <font color="#009900">MASTODON_URI</font><font color="#990000">=</font><font color="#FF0000">'https://fosstodon.org/@snonux'</font> +<pre><b><font color="#ffffff">declare</font></b><font color="#ff0000"> -xr </font><font color="#ff0000">MASTODON_URI</font><font color="#F3E651">=</font><font color="#bb00ff">'https://fosstodon.org/@snonux'</font> </pre> <br /> <span>and add the following into your <span class='inlinecode'>index.gmi</span>:</span><br /> @@ -103,7 +103,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF"><a</font></b> <font color="#009900">href</font><font color="#990000">=</font><font color="#FF0000">'https://fosstodon.org/@snonux'</font> <font color="#009900">rel</font><font color="#990000">=</font><font color="#FF0000">'me'</font><b><font color="#0000FF">></font></b>Me at Mastodon<b><font color="#0000FF"></a></font></b> +<pre><b><font color="#ffffff"><a</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">href</font></b><font color="#F3E651">=</font><font color="#bb00ff">'https://fosstodon.org/@snonux'</font><font color="#ff0000"> </font><b><font color="#F35E1E">rel</font></b><font color="#F3E651">=</font><font color="#bb00ff">'me'</font><b><font color="#ffffff">></font></b><font color="#ff0000">Me at Mastodon</font><b><font color="#ffffff"></a></font></b> </pre> <br /> <h2 style='display: inline' id='More'>More</h2><br /> diff --git a/gemfeed/2023-09-25-dtail-usage-examples.html b/gemfeed/2023-09-25-dtail-usage-examples.html index f07fed00..e66dcf82 100644 --- a/gemfeed/2023-09-25-dtail-usage-examples.html +++ b/gemfeed/2023-09-25-dtail-usage-examples.html @@ -50,7 +50,7 @@ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt --grep INFO --files <font color="#FF0000">"/var/log/dserver/*.log"</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt --grep INFO --files </font><font color="#bb00ff">"/var/log/dserver/*.log"</font> </pre> <br /> <span>Hint: you can also provide a comma separated server list, e.g.: <span class='inlinecode'>servers server1.example.org,server2.example.org:PORT,...</span></span><br /> @@ -63,7 +63,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt --grep INFO <font color="#FF0000">"/var/log/dserver/*.log"</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt --grep INFO </font><font color="#bb00ff">"/var/log/dserver/*.log"</font> </pre> <br /> <h2 style='display: inline' id='Aggregatinglogs'>Aggregating logs</h2><br /> @@ -76,10 +76,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select sum($goroutines),sum($cgocalls),</font> -<font color="#FF0000"> last($time),max(lifetimeConnections)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select sum($goroutines),sum($cgocalls),</font> +<font color="#bb00ff"> last($time),max(lifetimeConnections)'</font> </pre> <br /> <span>Beware: For map-reduce queries to work, you have to ensure that DTail supports your log format. Check out the documentaiton of the DTail query language and the DTail log formats on the DTail homepage for more information.</span><br /> @@ -92,10 +92,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - <font color="#FF0000">'from STATS select sum($goroutines),sum($cgocalls),</font> -<font color="#FF0000"> last($time),max(lifetimeConnections)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#bb00ff">'from STATS select sum($goroutines),sum($cgocalls),</font> +<font color="#bb00ff"> last($time),max(lifetimeConnections)'</font> </pre> <br /> <span>Here is another example:</span><br /> @@ -104,10 +104,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <a href='./dtail-usage-examples/dtail-map2.gif'><img alt='Tail map-reduce example 2' title='Tail map-reduce example 2' src='./dtail-usage-examples/dtail-map2.gif' /></a><br /> @@ -118,9 +118,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select ... outfile append result.csv'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select ... outfile append result.csv'</font> </pre> <br /> <h2 style='display: inline' id='Howtousedcat'>How to use <span class='inlinecode'>dcat</span></h2><br /> @@ -133,7 +133,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat --servers serverlist<font color="#990000">.</font>txt --files /etc/hostname +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt --files /etc/hostname</font> </pre> <br /> <a href='./dtail-usage-examples/dcat.gif'><img alt='Cat example' title='Cat example' src='./dtail-usage-examples/dcat.gif' /></a><br /> @@ -144,7 +144,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat --servers serverlist<font color="#990000">.</font>txt /etc/hostname +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt /etc/hostname</font> </pre> <br /> <h2 style='display: inline' id='Howtousedgrep'>How to use <span class='inlinecode'>dgrep</span></h2><br /> @@ -155,9 +155,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dgrep --servers server1<font color="#990000">.</font>example<font color="#990000">.</font>org<font color="#990000">:</font><font color="#993399">2223</font> <font color="#990000">\</font> - --files /etc/passwd <font color="#990000">\</font> - --regex nologin +<pre><font color="#F3E651">%</font><font color="#ff0000"> dgrep --servers server1</font><font color="#F3E651">.</font><font color="#ff0000">example</font><font color="#F3E651">.</font><font color="#ff0000">org</font><font color="#F3E651">:</font><font color="#bb00ff">2223</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files /etc/passwd </font><font color="#F3E651">\</font> +<font color="#ff0000"> --regex nologin</font> </pre> <br /> <span>Generally, <span class='inlinecode'>dgrep</span> is also a very useful way to search historic application logs for certain content.</span><br /> @@ -174,10 +174,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dmap --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dmap --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <span>Remember: For that to work, you have to make sure that DTail supports your log format. You can either use the ones already defined in <span class='inlinecode'>internal/mapr/logformat</span> or add an extension to support a custom log format. The example here works out of the box though, as DTail understands its own log format already. </span><br /> @@ -200,9 +200,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dmap --files /var/log/dserver/dserver<font color="#990000">.</font>log - --query <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dmap --files /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <span>As a shorthand version the following command can be used:</span><br /> @@ -211,9 +211,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dmap <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> <font color="#990000">\</font> - /var/log/dsever/dserver<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dmap </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> /var/log/dsever/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <span>You can also use a file input pipe as follows:</span><br /> @@ -222,9 +222,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat /var/log/dserver/dserver<font color="#990000">.</font>log <font color="#990000">|</font> <font color="#990000">\</font> - dmap <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log </font><font color="#F3E651">|</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> dmap </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <h3 style='display: inline' id='AggregatingCSVfiles'>Aggregating CSV files</h3><br /> @@ -235,16 +235,16 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat example<font color="#990000">.</font>csv -name<font color="#990000">,</font>lastname<font color="#990000">,</font>age<font color="#990000">,</font>profession -Michael<font color="#990000">,</font>Jordan<font color="#990000">,</font><font color="#993399">40</font><font color="#990000">,</font>Basketball player -Michael<font color="#990000">,</font>Jackson<font color="#990000">,</font><font color="#993399">100</font><font color="#990000">,</font>Singer -Albert<font color="#990000">,</font>Einstein<font color="#990000">,</font><font color="#993399">200</font><font color="#990000">,</font>Physician -<font color="#990000">%</font> dmap --query <font color="#FF0000">'select lastname,name where age > 40 logformat csv outfile result.csv'</font> example<font color="#990000">.</font>csv -<font color="#990000">%</font> cat result<font color="#990000">.</font>csv -lastname<font color="#990000">,</font>name -Jackson<font color="#990000">,</font>Michael -Einstein<font color="#990000">,</font>Albert +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat example</font><font color="#F3E651">.</font><font color="#ff0000">csv</font> +<font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000">lastname</font><font color="#F3E651">,</font><font color="#ff0000">age</font><font color="#F3E651">,</font><font color="#ff0000">profession</font> +<font color="#ff0000">Michael</font><font color="#F3E651">,</font><font color="#ff0000">Jordan</font><font color="#F3E651">,</font><font color="#bb00ff">40</font><font color="#F3E651">,</font><font color="#ff0000">Basketball player</font> +<font color="#ff0000">Michael</font><font color="#F3E651">,</font><font color="#ff0000">Jackson</font><font color="#F3E651">,</font><font color="#bb00ff">100</font><font color="#F3E651">,</font><font color="#ff0000">Singer</font> +<font color="#ff0000">Albert</font><font color="#F3E651">,</font><font color="#ff0000">Einstein</font><font color="#F3E651">,</font><font color="#bb00ff">200</font><font color="#F3E651">,</font><font color="#ff0000">Physician</font> +<font color="#F3E651">%</font><font color="#ff0000"> dmap --query </font><font color="#bb00ff">'select lastname,name where age > 40 logformat csv outfile result.csv'</font><font color="#ff0000"> example</font><font color="#F3E651">.</font><font color="#ff0000">csv</font> +<font color="#F3E651">%</font><font color="#ff0000"> cat result</font><font color="#F3E651">.</font><font color="#ff0000">csv</font> +<font color="#ff0000">lastname</font><font color="#F3E651">,</font><font color="#ff0000">name</font> +<font color="#ff0000">Jackson</font><font color="#F3E651">,</font><font color="#ff0000">Michael</font> +<font color="#ff0000">Einstein</font><font color="#F3E651">,</font><font color="#ff0000">Albert</font> </pre> <br /> <span>DMap can also be used to query and aggregate CSV files from remote servers.</span><br /> @@ -257,44 +257,44 @@ Einstein<font color="#990000">,</font>Albert by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail /var/log/dserver/dserver<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --logLevel trace /var/log/dserver/dserver<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --logLevel trace /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat /etc/passwd +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat /etc/passwd</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat --plain /etc/passwd <font color="#990000">></font> /etc/test -<i><font color="#9A1900"># Should show no differences.</font></i> -diff /etc/test /etc/passwd +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat --plain /etc/passwd </font><font color="#F3E651">></font><font color="#ff0000"> /etc/test</font> +<i><font color="#ababab"># Should show no differences.</font></i> +<font color="#ff0000">diff /etc/test /etc/passwd </font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dgrep --regex ERROR --files /var/log/dserver/dsever<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dgrep --regex ERROR --files /var/log/dserver/dsever</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dgrep --before <font color="#993399">10</font> --after <font color="#993399">10</font> --max <font color="#993399">10</font> --grep ERROR /var/log/dserver/dsever<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dgrep --before </font><font color="#bb00ff">10</font><font color="#ff0000"> --after </font><font color="#bb00ff">10</font><font color="#ff0000"> --max </font><font color="#bb00ff">10</font><font color="#ff0000"> --grep ERROR /var/log/dserver/dsever</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <span>Use <span class='inlinecode'>--help</span> for more available options. Or go to the DTail page for more information! Hope you find DTail useful!</span><br /> diff --git a/gemfeed/2023-10-29-kiss-static-web-photo-albums-with-photoalbum.sh.html b/gemfeed/2023-10-29-kiss-static-web-photo-albums-with-photoalbum.sh.html index 0293ba9c..0e3b8396 100644 --- a/gemfeed/2023-10-29-kiss-static-web-photo-albums-with-photoalbum.sh.html +++ b/gemfeed/2023-10-29-kiss-static-web-photo-albums-with-photoalbum.sh.html @@ -117,42 +117,42 @@ photoalbum makemake by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> photoalbum makemake -You may now customize <font color="#990000">.</font>/photoalbumrc and run make +<pre><font color="#F3E651">%</font><font color="#ff0000"> photoalbum makemake</font> +<font color="#ff0000">You may now customize </font><font color="#F3E651">.</font><font color="#ff0000">/photoalbumrc and run make</font> -<font color="#990000">%</font> cat Makefile -all<font color="#990000">:</font> - photoalbum generate photoalbumrc -clean<font color="#990000">:</font> - photoalbum clean photoalbumrc +<font color="#F3E651">%</font><font color="#ff0000"> cat Makefile</font> +<font color="#ff0000">all</font><font color="#F3E651">:</font> +<font color="#ff0000"> photoalbum generate photoalbumrc</font> +<font color="#ff0000">clean</font><font color="#F3E651">:</font> +<font color="#ff0000"> photoalbum clean photoalbumrc</font> -<font color="#990000">%</font> cat photoalbumrc -<i><font color="#9A1900"># The title of the photoalbum</font></i> -<font color="#009900">TITLE</font><font color="#990000">=</font><font color="#FF0000">'A simple Photoalbum'</font> +<font color="#F3E651">%</font><font color="#ff0000"> cat photoalbumrc</font> +<i><font color="#ababab"># The title of the photoalbum</font></i> +<font color="#ff0000">TITLE</font><font color="#F3E651">=</font><font color="#bb00ff">'A simple Photoalbum'</font> -<i><font color="#9A1900"># Thumbnail height geometry</font></i> -<font color="#009900">THUMBHEIGHT</font><font color="#990000">=</font><font color="#993399">300</font> -<i><font color="#9A1900"># Normal geometry height (when viewing photo). Uncomment, to keep original size.</font></i> -<font color="#009900">HEIGHT</font><font color="#990000">=</font><font color="#993399">1200</font> -<i><font color="#9A1900"># Max previews per page.</font></i> -<font color="#009900">MAXPREVIEWS</font><font color="#990000">=</font><font color="#993399">40</font> -<i><font color="#9A1900"># Randomly shuffle all previews.</font></i> -<i><font color="#9A1900"># SHUFFLE=yes</font></i> +<i><font color="#ababab"># Thumbnail height geometry</font></i> +<font color="#ff0000">THUMBHEIGHT</font><font color="#F3E651">=</font><font color="#bb00ff">300</font> +<i><font color="#ababab"># Normal geometry height (when viewing photo). Uncomment, to keep original size.</font></i> +<font color="#ff0000">HEIGHT</font><font color="#F3E651">=</font><font color="#bb00ff">1200</font> +<i><font color="#ababab"># Max previews per page.</font></i> +<font color="#ff0000">MAXPREVIEWS</font><font color="#F3E651">=</font><font color="#bb00ff">40</font> +<i><font color="#ababab"># Randomly shuffle all previews.</font></i> +<i><font color="#ababab"># SHUFFLE=yes</font></i> -<i><font color="#9A1900"># Diverse directories, need to be full paths, not relative!</font></i> -<font color="#009900">INCOMING_DIR</font><font color="#990000">=</font><font color="#009900">$(pwd)</font>/incoming -<font color="#009900">DIST_DIR</font><font color="#990000">=</font><font color="#009900">$(pwd)</font>/dist -<font color="#009900">TEMPLATE_DIR</font><font color="#990000">=</font>/usr/share/photoalbum/templates/default -<i><font color="#9A1900">#TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal</font></i> +<i><font color="#ababab"># Diverse directories, need to be full paths, not relative!</font></i> +<font color="#ff0000">INCOMING_DIR</font><font color="#F3E651">=</font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/incoming</font> +<font color="#ff0000">DIST_DIR</font><font color="#F3E651">=</font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/dist</font> +<font color="#ff0000">TEMPLATE_DIR</font><font color="#F3E651">=</font><font color="#ff0000">/usr/share/photoalbum/templates/default</font> +<i><font color="#ababab">#TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal</font></i> -<i><font color="#9A1900"># Includes a .tar of the incoming dir in the dist, can be yes or no</font></i> -<font color="#009900">TARBALL_INCLUDE</font><font color="#990000">=</font>yes -<font color="#009900">TARBALL_SUFFIX</font><font color="#990000">=.</font>tar -<font color="#009900">TAR_OPTS</font><font color="#990000">=</font><font color="#FF0000">'-c'</font> +<i><font color="#ababab"># Includes a .tar of the incoming dir in the dist, can be yes or no</font></i> +<font color="#ff0000">TARBALL_INCLUDE</font><font color="#F3E651">=</font><font color="#ff0000">yes</font> +<font color="#ff0000">TARBALL_SUFFIX</font><font color="#F3E651">=.</font><font color="#ff0000">tar</font> +<font color="#ff0000">TAR_OPTS</font><font color="#F3E651">=</font><font color="#bb00ff">'-c'</font> -<i><font color="#9A1900"># Some debugging options</font></i> -<i><font color="#9A1900">#set -e</font></i> -<i><font color="#9A1900">#set -x</font></i> +<i><font color="#ababab"># Some debugging options</font></i> +<i><font color="#ababab">#set -e</font></i> +<i><font color="#ababab">#set -x</font></i> </pre> <br /> <span>In the case for <span class='inlinecode'>irregular.ninja</span>, I changed the defaults to the following:</span><br /> @@ -161,38 +161,38 @@ clean<font color="#990000">:</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#FF6600">--- photoalbumrc 2023-10-29 21:42:00.894202045 +0200</font> -<font color="#009900">+++ photoalbumrc.new 2023-06-04 10:40:08.030994440 +0300</font> -<font color="#0000FF">@@ -1,23 +1,24 @@</font> - # The title of the photoalbum -<font color="#FF6600">-TITLE='A simple Photoalbum'</font> -<font color="#009900">+TITLE='Irregular.Ninja'</font> +<pre><font color="#ff0000">--- photoalbumrc 2023-10-29 21:42:00.894202045 +0200</font> +<font color="#ff0000">+++ photoalbumrc.new 2023-06-04 10:40:08.030994440 +0300</font> +<font color="#ff0000">@@ -1,23 +1,24 @@</font> +<font color="#ff0000"> # The title of the photoalbum</font> +<font color="#ff0000">-TITLE='A simple Photoalbum'</font> +<font color="#ff0000">+TITLE='Irregular.Ninja'</font> - # Thumbnail height geometry -<font color="#FF6600">-THUMBHEIGHT=300</font> -<font color="#009900">+THUMBHEIGHT=400</font> - # Normal geometry height (when viewing photo). Uncomment, to keep original size. -<font color="#FF6600">-HEIGHT=1200</font> -<font color="#009900">+HEIGHT=1800</font> - # Max previews per page. - MAXPREVIEWS=40 -<font color="#FF6600">-# Randomly shuffle all previews.</font> -<font color="#FF6600">-# SHUFFLE=yes</font> -<font color="#009900">+# Randomly shuffle</font> -<font color="#009900">+SHUFFLE=yes</font> +<font color="#ff0000"> # Thumbnail height geometry</font> +<font color="#ff0000">-THUMBHEIGHT=300</font> +<font color="#ff0000">+THUMBHEIGHT=400</font> +<font color="#ff0000"> # Normal geometry height (when viewing photo). Uncomment, to keep original size.</font> +<font color="#ff0000">-HEIGHT=1200</font> +<font color="#ff0000">+HEIGHT=1800</font> +<font color="#ff0000"> # Max previews per page.</font> +<font color="#ff0000"> MAXPREVIEWS=40</font> +<font color="#ff0000">-# Randomly shuffle all previews.</font> +<font color="#ff0000">-# SHUFFLE=yes</font> +<font color="#ff0000">+# Randomly shuffle</font> +<font color="#ff0000">+SHUFFLE=yes</font> - # Diverse directories, need to be full paths, not relative! -<font color="#FF6600">-INCOMING_DIR=$(pwd)/incoming</font> -<font color="#009900">+INCOMING_DIR=~/Nextcloud/Photos/irregular.ninja</font> - DIST_DIR=$(pwd)/dist - TEMPLATE_DIR=/usr/share/photoalbum/templates/default - #TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal +<font color="#ff0000"> # Diverse directories, need to be full paths, not relative!</font> +<font color="#ff0000">-INCOMING_DIR=$(pwd)/incoming</font> +<font color="#ff0000">+INCOMING_DIR=~/Nextcloud/Photos/irregular.ninja</font> +<font color="#ff0000"> DIST_DIR=$(pwd)/dist</font> +<font color="#ff0000"> TEMPLATE_DIR=/usr/share/photoalbum/templates/default</font> +<font color="#ff0000"> #TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal</font> - # Includes a .tar of the incoming dir in the dist, can be yes or no -<font color="#FF6600">-TARBALL_INCLUDE=yes</font> -<font color="#009900">+TARBALL_INCLUDE=no</font> - TARBALL_SUFFIX=.tar - TAR_OPTS='-c' +<font color="#ff0000"> # Includes a .tar of the incoming dir in the dist, can be yes or no</font> +<font color="#ff0000">-TARBALL_INCLUDE=yes</font> +<font color="#ff0000">+TARBALL_INCLUDE=no</font> +<font color="#ff0000"> TARBALL_SUFFIX=.tar</font> +<font color="#ff0000"> TAR_OPTS='-c'</font> </pre> <br /> <span>So I changed the album title, adjusted some image and thumbnail dimensions, and I want all images to be randomly shuffled every time the album is generated! I also have all my photos in my Nextcloud Photo directory and don't want to copy them to the local <span class='inlinecode'>incoming</span> directory. Also, a tarball containing the whole album as a download isn't provided.</span><br /> diff --git a/gemfeed/2023-12-10-bash-golf-part-3.html b/gemfeed/2023-12-10-bash-golf-part-3.html index 021faf6f..5baa4fb8 100644 --- a/gemfeed/2023-12-10-bash-golf-part-3.html +++ b/gemfeed/2023-12-10-bash-golf-part-3.html @@ -39,24 +39,24 @@ jgs^^^^^^^`^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">log ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">level</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">message</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -i <font color="#009900">pid</font><font color="#990000">=</font><font color="#FF0000">"$$"</font> +<font color="#7bc710">log ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">level</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">message</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">pid</font><font color="#F3E651">=</font><font color="#bb00ff">"$$"</font> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">callee</font><font color="#990000">=</font><font color="#009900">${FUNCNAME[1]}</font> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">stamp</font><font color="#990000">=</font><font color="#009900">$(</font>date <font color="#990000">+%</font>Y<font color="#990000">%</font>m<font color="#990000">%</font>d-<font color="#990000">%</font>H<font color="#990000">%</font>M<font color="#990000">%</font>S<font color="#990000">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">callee</font><font color="#F3E651">=</font><font color="#ff0000">${FUNCNAME[1]}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">stamp</font><font color="#F3E651">=</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">Y</font><font color="#F3E651">%</font><font color="#ff0000">m</font><font color="#F3E651">%</font><font color="#ff0000">d-</font><font color="#F3E651">%</font><font color="#ff0000">H</font><font color="#F3E651">%</font><font color="#ff0000">M</font><font color="#F3E651">%</font><font color="#ff0000">S</font><font color="#F3E651">)</font> - echo <font color="#FF0000">"$level|$stamp|$pid|$callee|$message"</font> <font color="#990000">>&</font><font color="#993399">2</font> -} +<font color="#ff0000"> echo </font><font color="#bb00ff">"$level|$stamp|$pid|$callee|$message"</font><font color="#ff0000"> </font><font color="#F3E651">>&</font><font color="#bb00ff">2</font> +<font color="#ff0000">}</font> -<b><font color="#000000">at_home_friday_evening ()</font></b> { - log INFO <font color="#FF0000">'One Peperoni Pizza, please'</font> -} +<font color="#7bc710">at_home_friday_evening ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> log INFO </font><font color="#bb00ff">'One Peperoni Pizza, please'</font> +<font color="#ff0000">}</font> -at_home_friday_evening +<font color="#ff0000">at_home_friday_evening</font> </pre> <br /> <span>The output is as follows:</span><br /> @@ -65,8 +65,8 @@ at_home_friday_evening by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>❯ <font color="#990000">.</font>/logexample<font color="#990000">.</font>sh -INFO<font color="#990000">|</font><font color="#993399">20231210</font>-<font color="#993399">082732</font><font color="#990000">|</font><font color="#993399">123002</font><font color="#990000">|</font>at_home_friday_evening<font color="#990000">|</font>One Peperoni Pizza<font color="#990000">,</font> please +<pre><font color="#ff0000">❯ </font><font color="#F3E651">.</font><font color="#ff0000">/logexample</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000">INFO</font><font color="#F3E651">|</font><font color="#bb00ff">20231210</font><font color="#ff0000">-</font><font color="#bb00ff">082732</font><font color="#F3E651">|</font><font color="#bb00ff">123002</font><font color="#F3E651">|</font><font color="#ff0000">at_home_friday_evening</font><font color="#F3E651">|</font><font color="#ff0000">One Peperoni Pizza</font><font color="#F3E651">,</font><font color="#ff0000"> please</font> </pre> <br /> <h2 style='display: inline' id=''><span class='inlinecode'>:(){ :|:& };:</span></h2><br /> @@ -100,18 +100,18 @@ INFO<font color="#990000">|</font><font color="#993399">20231210</font>-<font co by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> - -<b><font color="#000000">outer()</font></b> { - <b><font color="#000000">inner()</font></b> { - echo <font color="#FF0000">'Intel inside!'</font> - } - inner -} - -inner -outer -inner +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> + +<font color="#7bc710">outer()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><font color="#7bc710">inner()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Intel inside!'</font> +<font color="#ff0000"> }</font> +<font color="#ff0000"> inner</font> +<font color="#ff0000">}</font> + +<font color="#ff0000">inner</font> +<font color="#ff0000">outer</font> +<font color="#ff0000">inner</font> </pre> <br /> <span>And let's execute it:</span><br /> @@ -129,26 +129,26 @@ Intel inside! by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> - -<b><font color="#000000">outer1()</font></b> { - <b><font color="#000000">inner()</font></b> { - echo <font color="#FF0000">'Intel inside!'</font> - } - inner -} - -<b><font color="#000000">outer2()</font></b> { - <b><font color="#000000">inner()</font></b> { - echo <font color="#FF0000">'Wintel inside!'</font> - } - inner -} - -outer1 -inner -outer2 -inner +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> + +<font color="#7bc710">outer1()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><font color="#7bc710">inner()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Intel inside!'</font> +<font color="#ff0000"> }</font> +<font color="#ff0000"> inner</font> +<font color="#ff0000">}</font> + +<font color="#7bc710">outer2()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><font color="#7bc710">inner()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Wintel inside!'</font> +<font color="#ff0000"> }</font> +<font color="#ff0000"> inner</font> +<font color="#ff0000">}</font> + +<font color="#ff0000">outer1</font> +<font color="#ff0000">inner</font> +<font color="#ff0000">outer2</font> +<font color="#ff0000">inner</font> </pre> <br /> <span>And let's run it:</span><br /> @@ -169,14 +169,14 @@ Wintel inside! by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">some_expensive_operations()</font></b> { - echo <font color="#FF0000">"Doing expensive operations with '$1' from pid $$"</font> -} +<font color="#7bc710">some_expensive_operations()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Doing expensive operations with '$1' from pid $$"</font> +<font color="#ff0000">}</font> -<b><font color="#0000FF">for</font></b> i <b><font color="#0000FF">in</font></b> {<font color="#993399">0</font><font color="#990000">..</font><font color="#993399">9</font>}<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> echo <font color="#009900">$i</font><font color="#990000">;</font> <b><font color="#0000FF">done</font></b> <font color="#990000">\</font> - <font color="#990000">|</font> xargs -P<font color="#993399">10</font> -I{} bash -c <font color="#FF0000">'some_expensive_operations "{}"'</font> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> {</font><font color="#bb00ff">0</font><font color="#F3E651">..</font><font color="#bb00ff">9</font><font color="#ff0000">}</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> echo </font><font color="#ff0000">$i</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">done</font></b><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> xargs -P</font><font color="#bb00ff">10</font><font color="#ff0000"> -I{} bash -c </font><font color="#bb00ff">'some_expensive_operations "{}"'</font> </pre> <br /> <span>We try here to run ten parallel processes; each of them should run the <span class='inlinecode'>some_expensive_operations</span> function with a different argument. The arguments are provided to <span class='inlinecode'>xargs</span> through <span class='inlinecode'>STDIN</span> one per line. When executed, we get this:</span><br /> @@ -201,15 +201,15 @@ bash: line 1: some_expensive_operations: command not found by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">some_expensive_operations()</font></b> { - echo <font color="#FF0000">"Doing expensive operations with '$1' from pid $$"</font> -} -<b><font color="#0000FF">export</font></b> -f some_expensive_operations +<font color="#7bc710">some_expensive_operations()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Doing expensive operations with '$1' from pid $$"</font> +<font color="#ff0000">}</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> -f some_expensive_operations</font> -<b><font color="#0000FF">for</font></b> i <b><font color="#0000FF">in</font></b> {<font color="#993399">0</font><font color="#990000">..</font><font color="#993399">9</font>}<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> echo <font color="#009900">$i</font><font color="#990000">;</font> <b><font color="#0000FF">done</font></b> <font color="#990000">\</font> - <font color="#990000">|</font> xargs -P<font color="#993399">10</font> -I{} bash -c <font color="#FF0000">'some_expensive_operations "{}"'</font> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> {</font><font color="#bb00ff">0</font><font color="#F3E651">..</font><font color="#bb00ff">9</font><font color="#ff0000">}</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> echo </font><font color="#ff0000">$i</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">done</font></b><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> xargs -P</font><font color="#bb00ff">10</font><font color="#ff0000"> -I{} bash -c </font><font color="#bb00ff">'some_expensive_operations "{}"'</font> </pre> <br /> <span>When we run this now, we get:</span><br /> @@ -234,19 +234,19 @@ Doing expensive operations with '9' from pid 132840 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">some_other_function()</font></b> { - echo <font color="#FF0000">"$1"</font> -} +<font color="#7bc710">some_other_function()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$1"</font> +<font color="#ff0000">}</font> -<b><font color="#000000">some_expensive_operations()</font></b> { - some_other_function <font color="#FF0000">"Doing expensive operations with '$1' from pid $$"</font> -} -<b><font color="#0000FF">export</font></b> -f some_expensive_operations +<font color="#7bc710">some_expensive_operations()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> some_other_function </font><font color="#bb00ff">"Doing expensive operations with '$1' from pid $$"</font> +<font color="#ff0000">}</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> -f some_expensive_operations</font> -<b><font color="#0000FF">for</font></b> i <b><font color="#0000FF">in</font></b> {<font color="#993399">0</font><font color="#990000">..</font><font color="#993399">9</font>}<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> echo <font color="#009900">$i</font><font color="#990000">;</font> <b><font color="#0000FF">done</font></b> <font color="#990000">\</font> - <font color="#990000">|</font> xargs -P<font color="#993399">10</font> -I{} bash -c <font color="#FF0000">'some_expensive_operations "{}"'</font> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> {</font><font color="#bb00ff">0</font><font color="#F3E651">..</font><font color="#bb00ff">9</font><font color="#ff0000">}</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> echo </font><font color="#ff0000">$i</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">done</font></b><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> xargs -P</font><font color="#bb00ff">10</font><font color="#ff0000"> -I{} bash -c </font><font color="#bb00ff">'some_expensive_operations "{}"'</font> </pre> <br /> <span>... because <span class='inlinecode'>some_other_function</span> isn't exported! You will also need to add an <span class='inlinecode'>export -f some_other_function</span>!</span><br /> @@ -259,22 +259,22 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> - -<b><font color="#000000">foo()</font></b> { - <b><font color="#0000FF">local</font></b> <font color="#009900">foo</font><font color="#990000">=</font>bar <i><font color="#9A1900"># Declare local/dynamic variable</font></i> - bar - echo <font color="#FF0000">"$foo"</font> -} - -<b><font color="#000000">bar()</font></b> { - echo <font color="#FF0000">"$foo"</font> - <font color="#009900">foo</font><font color="#990000">=</font>baz -} - -<font color="#009900">foo</font><font color="#990000">=</font>foo <i><font color="#9A1900"># Declare global variable</font></i> -foo <i><font color="#9A1900"># Call function foo</font></i> -echo <font color="#FF0000">"$foo"</font> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> + +<font color="#7bc710">foo()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">bar </font><i><font color="#ababab"># Declare local/dynamic variable</font></i> +<font color="#ff0000"> bar</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$foo"</font> +<font color="#ff0000">}</font> + +<font color="#7bc710">bar()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$foo"</font> +<font color="#ff0000"> </font><font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">baz</font> +<font color="#ff0000">}</font> + +<font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">foo </font><i><font color="#ababab"># Declare global variable</font></i> +<font color="#ff0000">foo </font><i><font color="#ababab"># Call function foo</font></i> +<font color="#ff0000">echo </font><font color="#bb00ff">"$foo"</font> </pre> <br /> <span>Let's pause a minute. What do you think the output would be?</span><br /> @@ -299,34 +299,34 @@ foo by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#0000FF">declare</font></b> -r <font color="#009900">foo</font><font color="#990000">=</font>foo -<b><font color="#0000FF">declare</font></b> -r <font color="#009900">bar</font><font color="#990000">=</font>bar +<b><font color="#ffffff">declare</font></b><font color="#ff0000"> -r </font><font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">foo</font> +<b><font color="#ffffff">declare</font></b><font color="#ff0000"> -r </font><font color="#ff0000">bar</font><font color="#F3E651">=</font><font color="#ff0000">bar</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"$bar"</font> <font color="#990000">=</font> bar <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - echo ok1 - <b><font color="#0000FF">fi</font></b> -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> bar </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok1</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<b><font color="#ffffff">fi</font></b> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">]</font> <font color="#990000">&&</font> <font color="#990000">[</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - echo ok2a -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok2a</font> +<b><font color="#ffffff">fi</font></b> -<font color="#990000">[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">]</font> <font color="#990000">&&</font> <font color="#990000">[</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">]</font> <font color="#990000">&&</font> echo ok2b +<font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> echo ok2b</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">[[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">]];</font> <b><font color="#0000FF">then</font></b> - echo ok3a -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">]];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok3a</font> +<b><font color="#ffffff">fi</font></b> - <font color="#990000">[[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">]]</font> <font color="#990000">&&</font> echo ok3b +<font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">]]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> echo ok3b</font> -<b><font color="#0000FF">if</font></b> <b><font color="#0000FF">test</font></b> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <b><font color="#0000FF">test</font></b> <font color="#FF0000">"$bar"</font> <font color="#990000">=</font> bar<font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo ok4a -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> bar</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok4a</font> +<b><font color="#ffffff">fi</font></b> -<b><font color="#0000FF">test</font></b> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <b><font color="#0000FF">test</font></b> <font color="#FF0000">"$bar"</font> <font color="#990000">=</font> bar <font color="#990000">&&</font> echo ok4b +<b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> bar </font><font color="#F3E651">&&</font><font color="#ff0000"> echo ok4b</font> </pre> <br /> <span>The output we get is:</span><br /> @@ -350,18 +350,18 @@ ok4b by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<i><font color="#9A1900"># Single line comment</font></i> +<i><font color="#ababab"># Single line comment</font></i> -<i><font color="#9A1900"># These are two single line</font></i> -<i><font color="#9A1900"># comments one after another</font></i> +<i><font color="#ababab"># These are two single line</font></i> +<i><font color="#ababab"># comments one after another</font></i> -<font color="#990000">:</font> <font color="#990000"><<</font>COMMENT -This is another way a -multi line comment -could be written<font color="#990000">!</font> -COMMENT +<font color="#F3E651">:</font><font color="#ff0000"> </font><font color="#F3E651"><<</font><font color="#ff0000">COMMENT</font> +<font color="#ff0000">This is another way a</font> +<font color="#ff0000">multi line comment</font> +<font color="#ff0000">could be written</font><font color="#F3E651">!</font> +<font color="#ff0000">COMMENT</font> </pre> <br /> <span>I will not demonstrate the execution of this script, as it won't print anything! It's obviously not the most pretty way of commenting on your code, but it could sometimes be handy!</span><br /> @@ -374,11 +374,11 @@ COMMENT by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -echo foo -echo echo baz <font color="#990000">>></font> <font color="#009900">$0</font> -echo bar +<font color="#ff0000">echo foo</font> +<font color="#ff0000">echo echo baz </font><font color="#F3E651">>></font><font color="#ff0000"> </font><font color="#ff0000">$0</font> +<font color="#ff0000">echo bar</font> </pre> <br /> <span>When it is run, it will do:</span><br /> diff --git a/gemfeed/2024-01-13-one-reason-why-i-love-openbsd.html b/gemfeed/2024-01-13-one-reason-why-i-love-openbsd.html index 49c2ed28..0ab47be0 100644 --- a/gemfeed/2024-01-13-one-reason-why-i-love-openbsd.html +++ b/gemfeed/2024-01-13-one-reason-why-i-love-openbsd.html @@ -36,8 +36,8 @@ SSFISHKISSFISHKISSFISHKISSFISHKIS SFIS by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ doas installboot sd0 <i><font color="#9A1900"># Update the bootloader (not for every upgrade required)</font></i> -$ doas sysupgrade <i><font color="#9A1900"># Update all binaries (including Kernel)</font></i> +<pre><font color="#ff0000">$ doas installboot sd0 </font><i><font color="#ababab"># Update the bootloader (not for every upgrade required)</font></i> +<font color="#ff0000">$ doas sysupgrade </font><i><font color="#ababab"># Update all binaries (including Kernel)</font></i> </pre> <br /> <span><span class='inlinecode'>sysupgrade</span> downloaded and upgraded to the next release and rebooted the system. After the reboot, I run:</span><br /> @@ -46,9 +46,9 @@ $ doas sysupgrade <i><font color="#9A1900"># Update all binaries (including Kern by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ doas sysmerge <i><font color="#9A1900"># Update system configuration files</font></i> -$ doas pkg_add -u <i><font color="#9A1900"># Update all packages</font></i> -$ doas reboot <i><font color="#9A1900"># Just in case, reboot one more time</font></i> +<pre><font color="#ff0000">$ doas sysmerge </font><i><font color="#ababab"># Update system configuration files</font></i> +<font color="#ff0000">$ doas pkg_add -u </font><i><font color="#ababab"># Update all packages</font></i> +<font color="#ff0000">$ doas reboot </font><i><font color="#ababab"># Just in case, reboot one more time</font></i> </pre> <br /> <span>That's it! Took me around 5 minutes in total! No issues, only these few comands, only 5 minutes! It just works! No problems, no conflicts, no tons (actually none) config file merge conflicts.</span><br /> diff --git a/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.html b/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.html index ffd80d59..c142a1a3 100644 --- a/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.html +++ b/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.html @@ -97,38 +97,38 @@ KISS high-availability with OpenBSD by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/bin/ksh</font></i> +<pre><i><font color="#ababab">#!/bin/ksh</font></i> -<font color="#009900">ZONES_DIR</font><font color="#990000">=</font>/var/nsd/zones/master<font color="#990000">/</font> -<font color="#009900">DEFAULT_MASTER</font><font color="#990000">=</font>fishfinger<font color="#990000">.</font>buetow<font color="#990000">.</font>org -<font color="#009900">DEFAULT_STANDBY</font><font color="#990000">=</font>blowfish<font color="#990000">.</font>buetow<font color="#990000">.</font>org +<font color="#ff0000">ZONES_DIR</font><font color="#F3E651">=</font><font color="#ff0000">/var/nsd/zones/master</font><font color="#F3E651">/</font> +<font color="#ff0000">DEFAULT_MASTER</font><font color="#F3E651">=</font><font color="#ff0000">fishfinger</font><font color="#F3E651">.</font><font color="#ff0000">buetow</font><font color="#F3E651">.</font><font color="#ff0000">org</font> +<font color="#ff0000">DEFAULT_STANDBY</font><font color="#F3E651">=</font><font color="#ff0000">blowfish</font><font color="#F3E651">.</font><font color="#ff0000">buetow</font><font color="#F3E651">.</font><font color="#ff0000">org</font> -<b><font color="#000000">determine_master_and_standby ()</font></b> { - <b><font color="#0000FF">local</font></b> <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$DEFAULT_MASTER</font> - <b><font color="#0000FF">local</font></b> <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$DEFAULT_STANDBY</font> +<font color="#7bc710">determine_master_and_standby ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$DEFAULT_MASTER</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$DEFAULT_STANDBY</font> - <font color="#990000">.</font> - <font color="#990000">.</font> - <font color="#990000">.</font> - - <b><font color="#0000FF">local</font></b> -i <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">1</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">!</font> ftp -<font color="#993399">4</font> -o - https<font color="#990000">://</font><font color="#009900">$master</font>/index<font color="#990000">.</font>txt <font color="#990000">|</font> grep -q <font color="#FF0000">"Welcome to $master"</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"https://$master/index.txt IPv4 health check failed"</font> - <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">0</font> - <b><font color="#0000FF">elif</font></b> <font color="#990000">!</font> ftp -<font color="#993399">6</font> -o - https<font color="#990000">://</font><font color="#009900">$master</font>/index<font color="#990000">.</font>txt <font color="#990000">|</font> grep -q <font color="#FF0000">"Welcome to $master"</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"https://$master/index.txt IPv6 health check failed"</font> - <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">0</font> - <b><font color="#0000FF">fi</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#009900">$health_ok</font> -eq <font color="#993399">0</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">local</font></b> <font color="#009900">tmp</font><font color="#990000">=</font><font color="#009900">$master</font> - <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$standby</font> - <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$tmp</font> - <b><font color="#0000FF">fi</font></b> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">1</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> ftp -</font><font color="#bb00ff">4</font><font color="#ff0000"> -o - https</font><font color="#F3E651">://</font><font color="#ff0000">$master</font><font color="#ff0000">/index</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q </font><font color="#bb00ff">"Welcome to $master"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"https://$master/index.txt IPv4 health check failed"</font> +<font color="#ff0000"> </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><b><font color="#ffffff">elif</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> ftp -</font><font color="#bb00ff">6</font><font color="#ff0000"> -o - https</font><font color="#F3E651">://</font><font color="#ff0000">$master</font><font color="#ff0000">/index</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q </font><font color="#bb00ff">"Welcome to $master"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"https://$master/index.txt IPv6 health check failed"</font> +<font color="#ff0000"> </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">$health_ok</font><font color="#ff0000"> -eq </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">tmp</font><font color="#F3E651">=</font><font color="#ff0000">$master</font> +<font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$standby</font> +<font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$tmp</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> - <font color="#990000">.</font> - <font color="#990000">.</font> - <font color="#990000">.</font> -} +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000">}</font> </pre> <br /> <span>The failover scripts looks for the <span class='inlinecode'> ; Enable failover</span> string in the DNS zone files and swaps the <span class='inlinecode'>A</span> and <span class='inlinecode'>AAAA</span> records of the DNS entries accordingly:</span><br /> @@ -137,42 +137,42 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>fishfinger$ grep failover /var/nsd/zones/master/foo<font color="#990000">.</font>zone<font color="#990000">.</font>zone - <font color="#993399">300</font> IN A <font color="#993399">46.23</font><font color="#990000">.</font><font color="#993399">94.99</font> <font color="#990000">;</font> Enable failover - <font color="#993399">300</font> IN AAAA 2a03<font color="#990000">:</font><font color="#993399">6000</font><font color="#990000">:</font>6f67<font color="#990000">:</font><font color="#993399">624</font><font color="#990000">::</font><font color="#993399">99</font> <font color="#990000">;</font> Enable failover -www <font color="#993399">300</font> IN A <font color="#993399">46.23</font><font color="#990000">.</font><font color="#993399">94.99</font> <font color="#990000">;</font> Enable failover -www <font color="#993399">300</font> IN AAAA 2a03<font color="#990000">:</font><font color="#993399">6000</font><font color="#990000">:</font>6f67<font color="#990000">:</font><font color="#993399">624</font><font color="#990000">::</font><font color="#993399">99</font> <font color="#990000">;</font> Enable failover -standby <font color="#993399">300</font> IN A <font color="#993399">23.88</font><font color="#990000">.</font><font color="#993399">35.144</font> <font color="#990000">;</font> Enable failover -standby <font color="#993399">300</font> IN AAAA 2a01<font color="#990000">:</font>4f8<font color="#990000">:</font>c17<font color="#990000">:</font>20f1<font color="#990000">::</font><font color="#993399">42</font> <font color="#990000">;</font> Enable failover +<pre><font color="#ff0000">fishfinger$ grep failover /var/nsd/zones/master/foo</font><font color="#F3E651">.</font><font color="#ff0000">zone</font><font color="#F3E651">.</font><font color="#ff0000">zone</font> +<font color="#ff0000"> </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">46.23</font><font color="#F3E651">.</font><font color="#bb00ff">94.99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000"> </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a03</font><font color="#F3E651">:</font><font color="#bb00ff">6000</font><font color="#F3E651">:</font><font color="#ff0000">6f67</font><font color="#F3E651">:</font><font color="#bb00ff">624</font><font color="#F3E651">::</font><font color="#bb00ff">99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">www </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">46.23</font><font color="#F3E651">.</font><font color="#bb00ff">94.99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">www </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a03</font><font color="#F3E651">:</font><font color="#bb00ff">6000</font><font color="#F3E651">:</font><font color="#ff0000">6f67</font><font color="#F3E651">:</font><font color="#bb00ff">624</font><font color="#F3E651">::</font><font color="#bb00ff">99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">standby </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">23.88</font><font color="#F3E651">.</font><font color="#bb00ff">35.144</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">standby </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a01</font><font color="#F3E651">:</font><font color="#ff0000">4f8</font><font color="#F3E651">:</font><font color="#ff0000">c17</font><font color="#F3E651">:</font><font color="#ff0000">20f1</font><font color="#F3E651">::</font><font color="#bb00ff">42</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">transform ()</font></b> { - sed -E <font color="#FF0000">'</font> -<font color="#FF0000"> /IN A .*; Enable failover/ {</font> -<font color="#FF0000"> /^standby/! {</font> -<font color="#FF0000"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN A '</font><font color="#009900">$(</font>cat /var/nsd/run/master_a<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /^standby/ {</font> -<font color="#FF0000"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN A '</font><font color="#009900">$(</font>cat /var/nsd/run/standby_a<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /IN AAAA .*; Enable failover/ {</font> -<font color="#FF0000"> /^standby/! {</font> -<font color="#FF0000"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN AAAA '</font><font color="#009900">$(</font>cat /var/nsd/run/master_aaaa<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /^standby/ {</font> -<font color="#FF0000"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN AAAA '</font><font color="#009900">$(</font>cat /var/nsd/run/standby_aaaa<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> / ; serial/ {</font> -<font color="#FF0000"> s/^( +) ([0-9]+) .*; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> '</font><font color="#009900">$(</font>date <font color="#990000">+%</font>s<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> '</font> -} +<pre><font color="#7bc710">transform ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> sed -E </font><font color="#bb00ff">'</font> +<font color="#bb00ff"> /IN A .*; Enable failover/ {</font> +<font color="#bb00ff"> /^standby/! {</font> +<font color="#bb00ff"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN A '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/master_a</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /^standby/ {</font> +<font color="#bb00ff"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN A '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/standby_a</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /IN AAAA .*; Enable failover/ {</font> +<font color="#bb00ff"> /^standby/! {</font> +<font color="#bb00ff"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN AAAA '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/master_aaaa</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /^standby/ {</font> +<font color="#bb00ff"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN AAAA '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/standby_aaaa</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> / ; serial/ {</font> +<font color="#bb00ff"> s/^( +) ([0-9]+) .*; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> '</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">s</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> '</font> +<font color="#ff0000">}</font> </pre> <br /> <span>After the failover, the script reloads <span class='inlinecode'>nsd</span> and performs a sanity check to see if DNS still works. If not, a rollback will be performed:</span><br /> @@ -181,48 +181,48 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#! Race condition !#</font></i> - -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -f <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - mv <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#009900">$zone_file</font> -<b><font color="#0000FF">fi</font></b> +<pre><i><font color="#ababab">#! Race condition !#</font></i> +<font color="#ff0000"> </font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -f </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#ff0000">$zone_file</font> +<b><font color="#ffffff">fi</font></b> -cat <font color="#009900">$zone_file</font> <font color="#990000">|</font> transform <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp +<font color="#ff0000">cat </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> transform </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font> -grep -v <font color="#FF0000">' ; serial'</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp -grep -v <font color="#FF0000">' ; serial'</font> <font color="#009900">$zone_file</font> <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>old<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp +<font color="#ff0000">grep -v </font><font color="#bb00ff">' ; serial'</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font> +<font color="#ff0000">grep -v </font><font color="#bb00ff">' ; serial'</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">old</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font> -echo <font color="#FF0000">"Has zone $zone_file changed?"</font> -<b><font color="#0000FF">if</font></b> diff -u <font color="#009900">$zone_file</font><font color="#990000">.</font>old<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp<font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"The zone $zone_file hasn't changed"</font> - rm <font color="#009900">$zone_file</font><font color="#990000">.*.</font>tmp - <b><font color="#0000FF">return</font></b> <font color="#993399">0</font> -<b><font color="#0000FF">fi</font></b> +<font color="#ff0000">echo </font><font color="#bb00ff">"Has zone $zone_file changed?"</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> diff -u </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">old</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"The zone $zone_file hasn't changed"</font> +<font color="#ff0000"> rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.*.</font><font color="#ff0000">tmp</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<b><font color="#ffffff">fi</font></b> -cp <font color="#009900">$zone_file</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>bak -mv <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp <font color="#009900">$zone_file</font> -rm <font color="#009900">$zone_file</font><font color="#990000">.*.</font>tmp -echo <font color="#FF0000">"Reloading nsd"</font> -nsd-control reload +<font color="#ff0000">cp </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak</font> +<font color="#ff0000">mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#ff0000">$zone_file</font> +<font color="#ff0000">rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.*.</font><font color="#ff0000">tmp</font> +<font color="#ff0000">echo </font><font color="#bb00ff">"Reloading nsd"</font> +<font color="#ff0000">nsd-control reload</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">!</font> zone_is_ok <font color="#009900">$zone</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"Rolling back $zone_file changes"</font> - cp <font color="#009900">$zone_file</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>invalid - mv <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#009900">$zone_file</font> - echo <font color="#FF0000">"Reloading nsd"</font> - nsd-control reload - zone_is_ok <font color="#009900">$zone</font> - <b><font color="#0000FF">return</font></b> <font color="#993399">3</font> -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> zone_is_ok </font><font color="#ff0000">$zone</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Rolling back $zone_file changes"</font> +<font color="#ff0000"> cp </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">invalid</font> +<font color="#ff0000"> mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#ff0000">$zone_file</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Reloading nsd"</font> +<font color="#ff0000"> nsd-control reload</font> +<font color="#ff0000"> zone_is_ok </font><font color="#ff0000">$zone</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">3</font> +<b><font color="#ffffff">fi</font></b> -<b><font color="#0000FF">for</font></b> cleanup <b><font color="#0000FF">in</font></b> invalid bak<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -f <font color="#009900">$zone_file</font><font color="#990000">.</font><font color="#009900">$cleanup</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - rm <font color="#009900">$zone_file</font><font color="#990000">.</font><font color="#009900">$cleanup</font> - <b><font color="#0000FF">fi</font></b> -<b><font color="#0000FF">done</font></b> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> cleanup </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> invalid bak</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -f </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">$cleanup</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">$cleanup</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<b><font color="#ffffff">done</font></b> -echo <font color="#FF0000">"Failover of zone $zone to $MASTER completed"</font> -<b><font color="#0000FF">return</font></b> <font color="#993399">1</font> +<font color="#ff0000">echo </font><font color="#bb00ff">"Failover of zone $zone to $MASTER completed"</font> +<b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">1</font> </pre> <br /> <span>A non-zero return code (here, 3 when a rollback and 1 when a DNS failover was performed) will cause CRON to send an E-Mail with the whole script output.</span><br /> @@ -279,13 +279,13 @@ echo <font color="#FF0000">"Failover of zone $zone to $MASTER completed"</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Weekly auto-failover for Let's Encrypt automation</font></i> -<b><font color="#0000FF">local</font></b> -i -r <font color="#009900">week_of_the_year</font><font color="#990000">=</font><font color="#009900">$(</font>date <font color="#990000">+%</font>U<font color="#990000">)</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#009900">$(</font><font color="#990000">(</font> week_of_the_year <font color="#990000">%</font> <font color="#993399">2</font> <font color="#990000">))</font> -eq <font color="#993399">0</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">local</font></b> <font color="#009900">tmp</font><font color="#990000">=</font><font color="#009900">$master</font> - <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$standby</font> - <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$tmp</font> -<b><font color="#0000FF">fi</font></b> +<pre><i><font color="#ababab"># Weekly auto-failover for Let's Encrypt automation</font></i> +<b><font color="#ffffff">local</font></b><font color="#ff0000"> -i -r </font><font color="#ff0000">week_of_the_year</font><font color="#F3E651">=</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">U</font><font color="#F3E651">)</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">$(</font><font color="#F3E651">(</font><font color="#ff0000"> week_of_the_year </font><font color="#F3E651">%</font><font color="#ff0000"> </font><font color="#bb00ff">2</font><font color="#ff0000"> </font><font color="#F3E651">))</font><font color="#ff0000"> -eq </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">tmp</font><font color="#F3E651">=</font><font color="#ff0000">$master</font> +<font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$standby</font> +<font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$tmp</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>This way, a DNS failover is performed weekly so that the ACME automation can update the Let's Encrypt certificates (for master and standby) before they expire on each VM.</span><br /> diff --git a/gemfeed/2024-05-03-projects-i-currently-dont-have-time-for.html b/gemfeed/2024-05-03-projects-i-currently-dont-have-time-for.html index c2dd4a32..9b6358cb 100644 --- a/gemfeed/2024-05-03-projects-i-currently-dont-have-time-for.html +++ b/gemfeed/2024-05-03-projects-i-currently-dont-have-time-for.html @@ -222,12 +222,12 @@ Projects I currently don't have time for by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>Cluster <font color="#990000">:</font>UK<font color="#990000">,</font> <font color="#990000">:</font>uk01 <b><font color="#0000FF">do</font></b> - Customer<font color="#990000">.</font>C1A1<font color="#990000">.</font>segments<font color="#990000">.</font>volumes<font color="#990000">.</font>each <b><font color="#0000FF">do</font></b> <font color="#990000">|</font>volume<font color="#990000">|</font> - puts volume<font color="#990000">.</font>usage_stats - volume<font color="#990000">.</font>move_off! <b><font color="#0000FF">if</font></b> volume<font color="#990000">.</font>over_subscribed? - <b><font color="#0000FF">end</font></b> -<b><font color="#0000FF">end</font></b> +<pre><font color="#ff0000">Cluster </font><font color="#F3E651">:</font><font color="#ff0000">UK</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">:</font><font color="#ff0000">uk01 </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> Customer</font><font color="#F3E651">.</font><font color="#ff0000">C1A1</font><font color="#F3E651">.</font><font color="#ff0000">segments</font><font color="#F3E651">.</font><font color="#ff0000">volumes</font><font color="#F3E651">.</font><font color="#ff0000">each </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000">volume</font><font color="#F3E651">|</font> +<font color="#ff0000"> puts volume</font><font color="#F3E651">.</font><font color="#ff0000">usage_stats</font> +<font color="#ff0000"> volume</font><font color="#F3E651">.</font><font color="#ff0000">move_off! </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> volume</font><font color="#F3E651">.</font><font color="#ff0000">over_subscribed?</font> +<font color="#ff0000"> </font><b><font color="#ffffff">end</font></b> +<b><font color="#ffffff">end</font></b> </pre> <br /> <span>I am abandoning this project because my workplace has stopped the annual pet project competition, and I have other more important projects to work on at the moment.</span><br /> diff --git a/gemfeed/DRAFT-KISS-high-availability-with-OpenBSD.html b/gemfeed/DRAFT-KISS-high-availability-with-OpenBSD.html index 857bcb0f..7986609d 100644 --- a/gemfeed/DRAFT-KISS-high-availability-with-OpenBSD.html +++ b/gemfeed/DRAFT-KISS-high-availability-with-OpenBSD.html @@ -77,38 +77,38 @@ _____|_:_:_| (o)-(o) |_:_:_|--'`-. ,--. ksh under-water (((\'/ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/bin/ksh</font></i> +<pre><i><font color="#ababab">#!/bin/ksh</font></i> -<font color="#009900">ZONES_DIR</font><font color="#990000">=</font>/var/nsd/zones/master<font color="#990000">/</font> -<font color="#009900">DEFAULT_MASTER</font><font color="#990000">=</font>fishfinger<font color="#990000">.</font>buetow<font color="#990000">.</font>org -<font color="#009900">DEFAULT_STANDBY</font><font color="#990000">=</font>blowfish<font color="#990000">.</font>buetow<font color="#990000">.</font>org +<font color="#ff0000">ZONES_DIR</font><font color="#F3E651">=</font><font color="#ff0000">/var/nsd/zones/master</font><font color="#F3E651">/</font> +<font color="#ff0000">DEFAULT_MASTER</font><font color="#F3E651">=</font><font color="#ff0000">fishfinger</font><font color="#F3E651">.</font><font color="#ff0000">buetow</font><font color="#F3E651">.</font><font color="#ff0000">org</font> +<font color="#ff0000">DEFAULT_STANDBY</font><font color="#F3E651">=</font><font color="#ff0000">blowfish</font><font color="#F3E651">.</font><font color="#ff0000">buetow</font><font color="#F3E651">.</font><font color="#ff0000">org</font> -<b><font color="#000000">determine_master_and_standby ()</font></b> { - <b><font color="#0000FF">local</font></b> <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$DEFAULT_MASTER</font> - <b><font color="#0000FF">local</font></b> <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$DEFAULT_STANDBY</font> +<font color="#7bc710">determine_master_and_standby ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$DEFAULT_MASTER</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$DEFAULT_STANDBY</font> - <font color="#990000">.</font> - <font color="#990000">.</font> - <font color="#990000">.</font> - - <b><font color="#0000FF">local</font></b> -i <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">1</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">!</font> ftp -<font color="#993399">4</font> -o - https<font color="#990000">://</font><font color="#009900">$master</font>/index<font color="#990000">.</font>txt <font color="#990000">|</font> grep -q <font color="#FF0000">"Welcome to $master"</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"https://$master/index.txt IPv4 health check failed"</font> - <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">0</font> - <b><font color="#0000FF">elif</font></b> <font color="#990000">!</font> ftp -<font color="#993399">6</font> -o - https<font color="#990000">://</font><font color="#009900">$master</font>/index<font color="#990000">.</font>txt <font color="#990000">|</font> grep -q <font color="#FF0000">"Welcome to $master"</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"https://$master/index.txt IPv6 health check failed"</font> - <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">0</font> - <b><font color="#0000FF">fi</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#009900">$health_ok</font> -eq <font color="#993399">0</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">local</font></b> <font color="#009900">tmp</font><font color="#990000">=</font><font color="#009900">$master</font> - <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$standby</font> - <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$tmp</font> - <b><font color="#0000FF">fi</font></b> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">1</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> ftp -</font><font color="#bb00ff">4</font><font color="#ff0000"> -o - https</font><font color="#F3E651">://</font><font color="#ff0000">$master</font><font color="#ff0000">/index</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q </font><font color="#bb00ff">"Welcome to $master"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"https://$master/index.txt IPv4 health check failed"</font> +<font color="#ff0000"> </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><b><font color="#ffffff">elif</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> ftp -</font><font color="#bb00ff">6</font><font color="#ff0000"> -o - https</font><font color="#F3E651">://</font><font color="#ff0000">$master</font><font color="#ff0000">/index</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q </font><font color="#bb00ff">"Welcome to $master"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"https://$master/index.txt IPv6 health check failed"</font> +<font color="#ff0000"> </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">$health_ok</font><font color="#ff0000"> -eq </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">tmp</font><font color="#F3E651">=</font><font color="#ff0000">$master</font> +<font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$standby</font> +<font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$tmp</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> - <font color="#990000">.</font> - <font color="#990000">.</font> - <font color="#990000">.</font> -} +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000">}</font> </pre> <br /> <span>The failover scripts looks for the <span class='inlinecode'> ; Enable failover</span> string in the DNS zone files and swaps the <span class='inlinecode'>A</span> and <span class='inlinecode'>AAAA</span> records of the DNS entries accordingly:</span><br /> @@ -117,42 +117,42 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>fishfinger$ grep failover /var/nsd/zones/master/foo<font color="#990000">.</font>zone<font color="#990000">.</font>zone - <font color="#993399">300</font> IN A <font color="#993399">46.23</font><font color="#990000">.</font><font color="#993399">94.99</font> <font color="#990000">;</font> Enable failover - <font color="#993399">300</font> IN AAAA 2a03<font color="#990000">:</font><font color="#993399">6000</font><font color="#990000">:</font>6f67<font color="#990000">:</font><font color="#993399">624</font><font color="#990000">::</font><font color="#993399">99</font> <font color="#990000">;</font> Enable failover -www <font color="#993399">300</font> IN A <font color="#993399">46.23</font><font color="#990000">.</font><font color="#993399">94.99</font> <font color="#990000">;</font> Enable failover -www <font color="#993399">300</font> IN AAAA 2a03<font color="#990000">:</font><font color="#993399">6000</font><font color="#990000">:</font>6f67<font color="#990000">:</font><font color="#993399">624</font><font color="#990000">::</font><font color="#993399">99</font> <font color="#990000">;</font> Enable failover -standby <font color="#993399">300</font> IN A <font color="#993399">23.88</font><font color="#990000">.</font><font color="#993399">35.144</font> <font color="#990000">;</font> Enable failover -standby <font color="#993399">300</font> IN AAAA 2a01<font color="#990000">:</font>4f8<font color="#990000">:</font>c17<font color="#990000">:</font>20f1<font color="#990000">::</font><font color="#993399">42</font> <font color="#990000">;</font> Enable failover +<pre><font color="#ff0000">fishfinger$ grep failover /var/nsd/zones/master/foo</font><font color="#F3E651">.</font><font color="#ff0000">zone</font><font color="#F3E651">.</font><font color="#ff0000">zone</font> +<font color="#ff0000"> </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">46.23</font><font color="#F3E651">.</font><font color="#bb00ff">94.99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000"> </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a03</font><font color="#F3E651">:</font><font color="#bb00ff">6000</font><font color="#F3E651">:</font><font color="#ff0000">6f67</font><font color="#F3E651">:</font><font color="#bb00ff">624</font><font color="#F3E651">::</font><font color="#bb00ff">99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">www </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">46.23</font><font color="#F3E651">.</font><font color="#bb00ff">94.99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">www </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a03</font><font color="#F3E651">:</font><font color="#bb00ff">6000</font><font color="#F3E651">:</font><font color="#ff0000">6f67</font><font color="#F3E651">:</font><font color="#bb00ff">624</font><font color="#F3E651">::</font><font color="#bb00ff">99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">standby </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">23.88</font><font color="#F3E651">.</font><font color="#bb00ff">35.144</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">standby </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a01</font><font color="#F3E651">:</font><font color="#ff0000">4f8</font><font color="#F3E651">:</font><font color="#ff0000">c17</font><font color="#F3E651">:</font><font color="#ff0000">20f1</font><font color="#F3E651">::</font><font color="#bb00ff">42</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">tramsform ()</font></b> { - sed -E <font color="#FF0000">'</font> -<font color="#FF0000"> /IN A .*; Enable failover/ {</font> -<font color="#FF0000"> /^standby/! {</font> -<font color="#FF0000"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN A '</font><font color="#009900">$(</font>cat /var/nsd/run/master_a<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /^standby/ {</font> -<font color="#FF0000"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN A '</font><font color="#009900">$(</font>cat /var/nsd/run/standby_a<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /IN AAAA .*; Enable failover/ {</font> -<font color="#FF0000"> /^standby/! {</font> -<font color="#FF0000"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN AAAA '</font><font color="#009900">$(</font>cat /var/nsd/run/master_aaaa<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /^standby/ {</font> -<font color="#FF0000"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN AAAA '</font><font color="#009900">$(</font>cat /var/nsd/run/standby_aaaa<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> / ; serial/ {</font> -<font color="#FF0000"> s/^( +) ([0-9]+) .*; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> '</font><font color="#009900">$(</font>date <font color="#990000">+%</font>s<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> '</font> -} +<pre><font color="#7bc710">tramsform ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> sed -E </font><font color="#bb00ff">'</font> +<font color="#bb00ff"> /IN A .*; Enable failover/ {</font> +<font color="#bb00ff"> /^standby/! {</font> +<font color="#bb00ff"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN A '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/master_a</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /^standby/ {</font> +<font color="#bb00ff"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN A '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/standby_a</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /IN AAAA .*; Enable failover/ {</font> +<font color="#bb00ff"> /^standby/! {</font> +<font color="#bb00ff"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN AAAA '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/master_aaaa</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /^standby/ {</font> +<font color="#bb00ff"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN AAAA '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/standby_aaaa</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> / ; serial/ {</font> +<font color="#bb00ff"> s/^( +) ([0-9]+) .*; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> '</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">s</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> '</font> +<font color="#ff0000">}</font> </pre> <br /> <span>After the failover, the script reloads <span class='inlinecode'>nsd</span> and performs a sanity check to see if DNS still works. If not, a rollback will be performed:</span><br /> @@ -161,47 +161,47 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Race condition (e.g. script execution abored in the middle of the previous run)</font></i> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -f <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - mv <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#009900">$zone_file</font> -<b><font color="#0000FF">fi</font></b> +<pre><i><font color="#ababab"># Race condition (e.g. script execution abored in the middle of the previous run)</font></i> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -f </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#ff0000">$zone_file</font> +<b><font color="#ffffff">fi</font></b> -cat <font color="#009900">$zone_file</font> <font color="#990000">|</font> transform <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp +<font color="#ff0000">cat </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> transform </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font> -grep -v <font color="#FF0000">' ; serial'</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp -grep -v <font color="#FF0000">' ; serial'</font> <font color="#009900">$zone_file</font> <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>old<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp +<font color="#ff0000">grep -v </font><font color="#bb00ff">' ; serial'</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font> +<font color="#ff0000">grep -v </font><font color="#bb00ff">' ; serial'</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">old</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font> -echo <font color="#FF0000">"Has zone $zone_file changed?"</font> -<b><font color="#0000FF">if</font></b> diff -u <font color="#009900">$zone_file</font><font color="#990000">.</font>old<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp<font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"The zone $zone_file hasn't changed"</font> - rm <font color="#009900">$zone_file</font><font color="#990000">.*.</font>tmp - <b><font color="#0000FF">return</font></b> <font color="#993399">0</font> -<b><font color="#0000FF">fi</font></b> +<font color="#ff0000">echo </font><font color="#bb00ff">"Has zone $zone_file changed?"</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> diff -u </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">old</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"The zone $zone_file hasn't changed"</font> +<font color="#ff0000"> rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.*.</font><font color="#ff0000">tmp</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<b><font color="#ffffff">fi</font></b> -cp <font color="#009900">$zone_file</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>bak -mv <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp <font color="#009900">$zone_file</font> -rm <font color="#009900">$zone_file</font><font color="#990000">.*.</font>tmp -echo <font color="#FF0000">"Reloading nsd"</font> -nsd-control reload +<font color="#ff0000">cp </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak</font> +<font color="#ff0000">mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#ff0000">$zone_file</font> +<font color="#ff0000">rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.*.</font><font color="#ff0000">tmp</font> +<font color="#ff0000">echo </font><font color="#bb00ff">"Reloading nsd"</font> +<font color="#ff0000">nsd-control reload</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">!</font> zone_is_ok <font color="#009900">$zone</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"Rolling back $zone_file changes"</font> - cp <font color="#009900">$zone_file</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>invalid - mv <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#009900">$zone_file</font> - echo <font color="#FF0000">"Reloading nsd"</font> - nsd-control reload - zone_is_ok <font color="#009900">$zone</font> - <b><font color="#0000FF">return</font></b> <font color="#993399">3</font> -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> zone_is_ok </font><font color="#ff0000">$zone</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Rolling back $zone_file changes"</font> +<font color="#ff0000"> cp </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">invalid</font> +<font color="#ff0000"> mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#ff0000">$zone_file</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Reloading nsd"</font> +<font color="#ff0000"> nsd-control reload</font> +<font color="#ff0000"> zone_is_ok </font><font color="#ff0000">$zone</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">3</font> +<b><font color="#ffffff">fi</font></b> -<b><font color="#0000FF">for</font></b> cleanup <b><font color="#0000FF">in</font></b> invalid bak<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -f <font color="#009900">$zone_file</font><font color="#990000">.</font><font color="#009900">$cleanup</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - rm <font color="#009900">$zone_file</font><font color="#990000">.</font><font color="#009900">$cleanup</font> - <b><font color="#0000FF">fi</font></b> -<b><font color="#0000FF">done</font></b> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> cleanup </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> invalid bak</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -f </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">$cleanup</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">$cleanup</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<b><font color="#ffffff">done</font></b> -echo <font color="#FF0000">"Failover of zone $zone to $MASTER completed"</font> -<b><font color="#0000FF">return</font></b> <font color="#993399">1</font> +<font color="#ff0000">echo </font><font color="#bb00ff">"Failover of zone $zone to $MASTER completed"</font> +<b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">1</font> </pre> <br /> <span>A non-zero return code (here, 3 when a rollback and 1 when a DNS failover was performed) will cause CRON to send an E-Mail with the whole script output.</span><br /> @@ -258,13 +258,13 @@ echo <font color="#FF0000">"Failover of zone $zone to $MASTER completed"</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Weekly auto-failover for Let's Encrypt automation</font></i> -<b><font color="#0000FF">local</font></b> -i -r <font color="#009900">week_of_the_year</font><font color="#990000">=</font><font color="#009900">$(</font>date <font color="#990000">+%</font>U<font color="#990000">)</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#009900">$(</font><font color="#990000">(</font> week_of_the_year <font color="#990000">%</font> <font color="#993399">2</font> <font color="#990000">))</font> -eq <font color="#993399">0</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">local</font></b> <font color="#009900">tmp</font><font color="#990000">=</font><font color="#009900">$master</font> - <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$standby</font> - <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$tmp</font> -<b><font color="#0000FF">fi</font></b> +<pre><i><font color="#ababab"># Weekly auto-failover for Let's Encrypt automation</font></i> +<b><font color="#ffffff">local</font></b><font color="#ff0000"> -i -r </font><font color="#ff0000">week_of_the_year</font><font color="#F3E651">=</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">U</font><font color="#F3E651">)</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">$(</font><font color="#F3E651">(</font><font color="#ff0000"> week_of_the_year </font><font color="#F3E651">%</font><font color="#ff0000"> </font><font color="#bb00ff">2</font><font color="#ff0000"> </font><font color="#F3E651">))</font><font color="#ff0000"> -eq </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">tmp</font><font color="#F3E651">=</font><font color="#ff0000">$master</font> +<font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$standby</font> +<font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$tmp</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>This way, a DNS failover is performed weekly so that the ACME automation can update the Let's Encrypt certificates (for master and standby) before they expire on each VM.</span><br /> diff --git a/gemfeed/atom.xml b/gemfeed/atom.xml index 583d9b18..67fcc004 100644 --- a/gemfeed/atom.xml +++ b/gemfeed/atom.xml @@ -1,6 +1,6 @@ <?xml version="1.0" encoding="utf-8"?> <feed xmlns="http://www.w3.org/2005/Atom"> - <updated>2024-05-12T14:48:38+03:00</updated> + <updated>2024-05-18T13:15:08+03:00</updated> <title>foo.zone feed</title> <subtitle>To be in the .zone!</subtitle> <link href="https://foo.zone/gemfeed/atom.xml" rel="self" /> @@ -232,12 +232,12 @@ Projects I currently don't have time for by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>Cluster <font color="#990000">:</font>UK<font color="#990000">,</font> <font color="#990000">:</font>uk01 <b><font color="#0000FF">do</font></b> - Customer<font color="#990000">.</font>C1A1<font color="#990000">.</font>segments<font color="#990000">.</font>volumes<font color="#990000">.</font>each <b><font color="#0000FF">do</font></b> <font color="#990000">|</font>volume<font color="#990000">|</font> - puts volume<font color="#990000">.</font>usage_stats - volume<font color="#990000">.</font>move_off! <b><font color="#0000FF">if</font></b> volume<font color="#990000">.</font>over_subscribed? - <b><font color="#0000FF">end</font></b> -<b><font color="#0000FF">end</font></b> +<pre><font color="#ff0000">Cluster </font><font color="#F3E651">:</font><font color="#ff0000">UK</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#F3E651">:</font><font color="#ff0000">uk01 </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> Customer</font><font color="#F3E651">.</font><font color="#ff0000">C1A1</font><font color="#F3E651">.</font><font color="#ff0000">segments</font><font color="#F3E651">.</font><font color="#ff0000">volumes</font><font color="#F3E651">.</font><font color="#ff0000">each </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000">volume</font><font color="#F3E651">|</font> +<font color="#ff0000"> puts volume</font><font color="#F3E651">.</font><font color="#ff0000">usage_stats</font> +<font color="#ff0000"> volume</font><font color="#F3E651">.</font><font color="#ff0000">move_off! </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> volume</font><font color="#F3E651">.</font><font color="#ff0000">over_subscribed?</font> +<font color="#ff0000"> </font><b><font color="#ffffff">end</font></b> +<b><font color="#ffffff">end</font></b> </pre> <br /> <span>I am abandoning this project because my workplace has stopped the annual pet project competition, and I have other more important projects to work on at the moment.</span><br /> @@ -599,38 +599,38 @@ KISS high-availability with OpenBSD by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/bin/ksh</font></i> - -<font color="#009900">ZONES_DIR</font><font color="#990000">=</font>/var/nsd/zones/master<font color="#990000">/</font> -<font color="#009900">DEFAULT_MASTER</font><font color="#990000">=</font>fishfinger<font color="#990000">.</font>buetow<font color="#990000">.</font>org -<font color="#009900">DEFAULT_STANDBY</font><font color="#990000">=</font>blowfish<font color="#990000">.</font>buetow<font color="#990000">.</font>org - -<b><font color="#000000">determine_master_and_standby ()</font></b> { - <b><font color="#0000FF">local</font></b> <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$DEFAULT_MASTER</font> - <b><font color="#0000FF">local</font></b> <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$DEFAULT_STANDBY</font> - - <font color="#990000">.</font> - <font color="#990000">.</font> - <font color="#990000">.</font> - - <b><font color="#0000FF">local</font></b> -i <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">1</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">!</font> ftp -<font color="#993399">4</font> -o - https<font color="#990000">://</font><font color="#009900">$master</font>/index<font color="#990000">.</font>txt <font color="#990000">|</font> grep -q <font color="#FF0000">"Welcome to $master"</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"https://$master/index.txt IPv4 health check failed"</font> - <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">0</font> - <b><font color="#0000FF">elif</font></b> <font color="#990000">!</font> ftp -<font color="#993399">6</font> -o - https<font color="#990000">://</font><font color="#009900">$master</font>/index<font color="#990000">.</font>txt <font color="#990000">|</font> grep -q <font color="#FF0000">"Welcome to $master"</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"https://$master/index.txt IPv6 health check failed"</font> - <font color="#009900">health_ok</font><font color="#990000">=</font><font color="#993399">0</font> - <b><font color="#0000FF">fi</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#009900">$health_ok</font> -eq <font color="#993399">0</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">local</font></b> <font color="#009900">tmp</font><font color="#990000">=</font><font color="#009900">$master</font> - <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$standby</font> - <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$tmp</font> - <b><font color="#0000FF">fi</font></b> - - <font color="#990000">.</font> - <font color="#990000">.</font> - <font color="#990000">.</font> -} +<pre><i><font color="#ababab">#!/bin/ksh</font></i> + +<font color="#ff0000">ZONES_DIR</font><font color="#F3E651">=</font><font color="#ff0000">/var/nsd/zones/master</font><font color="#F3E651">/</font> +<font color="#ff0000">DEFAULT_MASTER</font><font color="#F3E651">=</font><font color="#ff0000">fishfinger</font><font color="#F3E651">.</font><font color="#ff0000">buetow</font><font color="#F3E651">.</font><font color="#ff0000">org</font> +<font color="#ff0000">DEFAULT_STANDBY</font><font color="#F3E651">=</font><font color="#ff0000">blowfish</font><font color="#F3E651">.</font><font color="#ff0000">buetow</font><font color="#F3E651">.</font><font color="#ff0000">org</font> + +<font color="#7bc710">determine_master_and_standby ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$DEFAULT_MASTER</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$DEFAULT_STANDBY</font> + +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">1</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> ftp -</font><font color="#bb00ff">4</font><font color="#ff0000"> -o - https</font><font color="#F3E651">://</font><font color="#ff0000">$master</font><font color="#ff0000">/index</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q </font><font color="#bb00ff">"Welcome to $master"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"https://$master/index.txt IPv4 health check failed"</font> +<font color="#ff0000"> </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><b><font color="#ffffff">elif</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> ftp -</font><font color="#bb00ff">6</font><font color="#ff0000"> -o - https</font><font color="#F3E651">://</font><font color="#ff0000">$master</font><font color="#ff0000">/index</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q </font><font color="#bb00ff">"Welcome to $master"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"https://$master/index.txt IPv6 health check failed"</font> +<font color="#ff0000"> </font><font color="#ff0000">health_ok</font><font color="#F3E651">=</font><font color="#bb00ff">0</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">$health_ok</font><font color="#ff0000"> -eq </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">tmp</font><font color="#F3E651">=</font><font color="#ff0000">$master</font> +<font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$standby</font> +<font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$tmp</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> + +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000"> </font><font color="#F3E651">.</font> +<font color="#ff0000">}</font> </pre> <br /> <span>The failover scripts looks for the <span class='inlinecode'> ; Enable failover</span> string in the DNS zone files and swaps the <span class='inlinecode'>A</span> and <span class='inlinecode'>AAAA</span> records of the DNS entries accordingly:</span><br /> @@ -639,42 +639,42 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>fishfinger$ grep failover /var/nsd/zones/master/foo<font color="#990000">.</font>zone<font color="#990000">.</font>zone - <font color="#993399">300</font> IN A <font color="#993399">46.23</font><font color="#990000">.</font><font color="#993399">94.99</font> <font color="#990000">;</font> Enable failover - <font color="#993399">300</font> IN AAAA 2a03<font color="#990000">:</font><font color="#993399">6000</font><font color="#990000">:</font>6f67<font color="#990000">:</font><font color="#993399">624</font><font color="#990000">::</font><font color="#993399">99</font> <font color="#990000">;</font> Enable failover -www <font color="#993399">300</font> IN A <font color="#993399">46.23</font><font color="#990000">.</font><font color="#993399">94.99</font> <font color="#990000">;</font> Enable failover -www <font color="#993399">300</font> IN AAAA 2a03<font color="#990000">:</font><font color="#993399">6000</font><font color="#990000">:</font>6f67<font color="#990000">:</font><font color="#993399">624</font><font color="#990000">::</font><font color="#993399">99</font> <font color="#990000">;</font> Enable failover -standby <font color="#993399">300</font> IN A <font color="#993399">23.88</font><font color="#990000">.</font><font color="#993399">35.144</font> <font color="#990000">;</font> Enable failover -standby <font color="#993399">300</font> IN AAAA 2a01<font color="#990000">:</font>4f8<font color="#990000">:</font>c17<font color="#990000">:</font>20f1<font color="#990000">::</font><font color="#993399">42</font> <font color="#990000">;</font> Enable failover +<pre><font color="#ff0000">fishfinger$ grep failover /var/nsd/zones/master/foo</font><font color="#F3E651">.</font><font color="#ff0000">zone</font><font color="#F3E651">.</font><font color="#ff0000">zone</font> +<font color="#ff0000"> </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">46.23</font><font color="#F3E651">.</font><font color="#bb00ff">94.99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000"> </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a03</font><font color="#F3E651">:</font><font color="#bb00ff">6000</font><font color="#F3E651">:</font><font color="#ff0000">6f67</font><font color="#F3E651">:</font><font color="#bb00ff">624</font><font color="#F3E651">::</font><font color="#bb00ff">99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">www </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">46.23</font><font color="#F3E651">.</font><font color="#bb00ff">94.99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">www </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a03</font><font color="#F3E651">:</font><font color="#bb00ff">6000</font><font color="#F3E651">:</font><font color="#ff0000">6f67</font><font color="#F3E651">:</font><font color="#bb00ff">624</font><font color="#F3E651">::</font><font color="#bb00ff">99</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">standby </font><font color="#bb00ff">300</font><font color="#ff0000"> IN A </font><font color="#bb00ff">23.88</font><font color="#F3E651">.</font><font color="#bb00ff">35.144</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> +<font color="#ff0000">standby </font><font color="#bb00ff">300</font><font color="#ff0000"> IN AAAA 2a01</font><font color="#F3E651">:</font><font color="#ff0000">4f8</font><font color="#F3E651">:</font><font color="#ff0000">c17</font><font color="#F3E651">:</font><font color="#ff0000">20f1</font><font color="#F3E651">::</font><font color="#bb00ff">42</font><font color="#ff0000"> </font><font color="#F3E651">;</font><font color="#ff0000"> Enable failover</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">transform ()</font></b> { - sed -E <font color="#FF0000">'</font> -<font color="#FF0000"> /IN A .*; Enable failover/ {</font> -<font color="#FF0000"> /^standby/! {</font> -<font color="#FF0000"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN A '</font><font color="#009900">$(</font>cat /var/nsd/run/master_a<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /^standby/ {</font> -<font color="#FF0000"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN A '</font><font color="#009900">$(</font>cat /var/nsd/run/standby_a<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /IN AAAA .*; Enable failover/ {</font> -<font color="#FF0000"> /^standby/! {</font> -<font color="#FF0000"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN AAAA '</font><font color="#009900">$(</font>cat /var/nsd/run/master_aaaa<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> /^standby/ {</font> -<font color="#FF0000"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> 300 IN AAAA '</font><font color="#009900">$(</font>cat /var/nsd/run/standby_aaaa<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> / ; serial/ {</font> -<font color="#FF0000"> s/^( +) ([0-9]+) .*; (.*)/</font><font color="#CC33CC">\1</font><font color="#FF0000"> '</font><font color="#009900">$(</font>date <font color="#990000">+%</font>s<font color="#990000">)</font><font color="#FF0000">' ; </font><font color="#CC33CC">\3</font><font color="#FF0000">/;</font> -<font color="#FF0000"> }</font> -<font color="#FF0000"> '</font> -} +<pre><font color="#7bc710">transform ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> sed -E </font><font color="#bb00ff">'</font> +<font color="#bb00ff"> /IN A .*; Enable failover/ {</font> +<font color="#bb00ff"> /^standby/! {</font> +<font color="#bb00ff"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN A '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/master_a</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /^standby/ {</font> +<font color="#bb00ff"> s/^(.*) 300 IN A (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN A '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/standby_a</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /IN AAAA .*; Enable failover/ {</font> +<font color="#bb00ff"> /^standby/! {</font> +<font color="#bb00ff"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN AAAA '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/master_aaaa</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> /^standby/ {</font> +<font color="#bb00ff"> s/^(.*) 300 IN AAAA (.*) ; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> 300 IN AAAA '</font><font color="#ff0000">$(</font><font color="#ff0000">cat /var/nsd/run/standby_aaaa</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> / ; serial/ {</font> +<font color="#bb00ff"> s/^( +) ([0-9]+) .*; (.*)/</font><font color="#ffffff">\1</font><font color="#bb00ff"> '</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">s</font><font color="#F3E651">)</font><font color="#bb00ff">' ; </font><font color="#ffffff">\3</font><font color="#bb00ff">/;</font> +<font color="#bb00ff"> }</font> +<font color="#bb00ff"> '</font> +<font color="#ff0000">}</font> </pre> <br /> <span>After the failover, the script reloads <span class='inlinecode'>nsd</span> and performs a sanity check to see if DNS still works. If not, a rollback will be performed:</span><br /> @@ -683,48 +683,48 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#! Race condition !#</font></i> - -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -f <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - mv <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#009900">$zone_file</font> -<b><font color="#0000FF">fi</font></b> - -cat <font color="#009900">$zone_file</font> <font color="#990000">|</font> transform <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp - -grep -v <font color="#FF0000">' ; serial'</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp -grep -v <font color="#FF0000">' ; serial'</font> <font color="#009900">$zone_file</font> <font color="#990000">></font> <font color="#009900">$zone_file</font><font color="#990000">.</font>old<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp - -echo <font color="#FF0000">"Has zone $zone_file changed?"</font> -<b><font color="#0000FF">if</font></b> diff -u <font color="#009900">$zone_file</font><font color="#990000">.</font>old<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>noserial<font color="#990000">.</font>tmp<font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"The zone $zone_file hasn't changed"</font> - rm <font color="#009900">$zone_file</font><font color="#990000">.*.</font>tmp - <b><font color="#0000FF">return</font></b> <font color="#993399">0</font> -<b><font color="#0000FF">fi</font></b> - -cp <font color="#009900">$zone_file</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>bak -mv <font color="#009900">$zone_file</font><font color="#990000">.</font>new<font color="#990000">.</font>tmp <font color="#009900">$zone_file</font> -rm <font color="#009900">$zone_file</font><font color="#990000">.*.</font>tmp -echo <font color="#FF0000">"Reloading nsd"</font> -nsd-control reload - -<b><font color="#0000FF">if</font></b> <font color="#990000">!</font> zone_is_ok <font color="#009900">$zone</font><font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"Rolling back $zone_file changes"</font> - cp <font color="#009900">$zone_file</font> <font color="#009900">$zone_file</font><font color="#990000">.</font>invalid - mv <font color="#009900">$zone_file</font><font color="#990000">.</font>bak <font color="#009900">$zone_file</font> - echo <font color="#FF0000">"Reloading nsd"</font> - nsd-control reload - zone_is_ok <font color="#009900">$zone</font> - <b><font color="#0000FF">return</font></b> <font color="#993399">3</font> -<b><font color="#0000FF">fi</font></b> - -<b><font color="#0000FF">for</font></b> cleanup <b><font color="#0000FF">in</font></b> invalid bak<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -f <font color="#009900">$zone_file</font><font color="#990000">.</font><font color="#009900">$cleanup</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - rm <font color="#009900">$zone_file</font><font color="#990000">.</font><font color="#009900">$cleanup</font> - <b><font color="#0000FF">fi</font></b> -<b><font color="#0000FF">done</font></b> - -echo <font color="#FF0000">"Failover of zone $zone to $MASTER completed"</font> -<b><font color="#0000FF">return</font></b> <font color="#993399">1</font> +<pre><i><font color="#ababab">#! Race condition !#</font></i> +<font color="#ff0000"> </font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -f </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#ff0000">$zone_file</font> +<b><font color="#ffffff">fi</font></b> + +<font color="#ff0000">cat </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> transform </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font> + +<font color="#ff0000">grep -v </font><font color="#bb00ff">' ; serial'</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font> +<font color="#ff0000">grep -v </font><font color="#bb00ff">' ; serial'</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">old</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font> + +<font color="#ff0000">echo </font><font color="#bb00ff">"Has zone $zone_file changed?"</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> diff -u </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">old</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">noserial</font><font color="#F3E651">.</font><font color="#ff0000">tmp</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"The zone $zone_file hasn't changed"</font> +<font color="#ff0000"> rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.*.</font><font color="#ff0000">tmp</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">0</font> +<b><font color="#ffffff">fi</font></b> + +<font color="#ff0000">cp </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak</font> +<font color="#ff0000">mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">new</font><font color="#F3E651">.</font><font color="#ff0000">tmp </font><font color="#ff0000">$zone_file</font> +<font color="#ff0000">rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.*.</font><font color="#ff0000">tmp</font> +<font color="#ff0000">echo </font><font color="#bb00ff">"Reloading nsd"</font> +<font color="#ff0000">nsd-control reload</font> + +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> zone_is_ok </font><font color="#ff0000">$zone</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Rolling back $zone_file changes"</font> +<font color="#ff0000"> cp </font><font color="#ff0000">$zone_file</font><font color="#ff0000"> </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">invalid</font> +<font color="#ff0000"> mv </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">bak </font><font color="#ff0000">$zone_file</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Reloading nsd"</font> +<font color="#ff0000"> nsd-control reload</font> +<font color="#ff0000"> zone_is_ok </font><font color="#ff0000">$zone</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">3</font> +<b><font color="#ffffff">fi</font></b> + +<b><font color="#ffffff">for</font></b><font color="#ff0000"> cleanup </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> invalid bak</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -f </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">$cleanup</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> rm </font><font color="#ff0000">$zone_file</font><font color="#F3E651">.</font><font color="#ff0000">$cleanup</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<b><font color="#ffffff">done</font></b> + +<font color="#ff0000">echo </font><font color="#bb00ff">"Failover of zone $zone to $MASTER completed"</font> +<b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#bb00ff">1</font> </pre> <br /> <span>A non-zero return code (here, 3 when a rollback and 1 when a DNS failover was performed) will cause CRON to send an E-Mail with the whole script output.</span><br /> @@ -781,13 +781,13 @@ echo <font color="#FF0000">"Failover of zone $zone to $MASTER completed"</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900"># Weekly auto-failover for Let's Encrypt automation</font></i> -<b><font color="#0000FF">local</font></b> -i -r <font color="#009900">week_of_the_year</font><font color="#990000">=</font><font color="#009900">$(</font>date <font color="#990000">+%</font>U<font color="#990000">)</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#009900">$(</font><font color="#990000">(</font> week_of_the_year <font color="#990000">%</font> <font color="#993399">2</font> <font color="#990000">))</font> -eq <font color="#993399">0</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">local</font></b> <font color="#009900">tmp</font><font color="#990000">=</font><font color="#009900">$master</font> - <font color="#009900">master</font><font color="#990000">=</font><font color="#009900">$standby</font> - <font color="#009900">standby</font><font color="#990000">=</font><font color="#009900">$tmp</font> -<b><font color="#0000FF">fi</font></b> +<pre><i><font color="#ababab"># Weekly auto-failover for Let's Encrypt automation</font></i> +<b><font color="#ffffff">local</font></b><font color="#ff0000"> -i -r </font><font color="#ff0000">week_of_the_year</font><font color="#F3E651">=</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">U</font><font color="#F3E651">)</font> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">$(</font><font color="#F3E651">(</font><font color="#ff0000"> week_of_the_year </font><font color="#F3E651">%</font><font color="#ff0000"> </font><font color="#bb00ff">2</font><font color="#ff0000"> </font><font color="#F3E651">))</font><font color="#ff0000"> -eq </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">tmp</font><font color="#F3E651">=</font><font color="#ff0000">$master</font> +<font color="#ff0000"> </font><font color="#ff0000">master</font><font color="#F3E651">=</font><font color="#ff0000">$standby</font> +<font color="#ff0000"> </font><font color="#ff0000">standby</font><font color="#F3E651">=</font><font color="#ff0000">$tmp</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>This way, a DNS failover is performed weekly so that the ACME automation can update the Let's Encrypt certificates (for master and standby) before they expire on each VM.</span><br /> @@ -1133,8 +1133,8 @@ SSFISHKISSFISHKISSFISHKISSFISHKIS SFIS by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ doas installboot sd0 <i><font color="#9A1900"># Update the bootloader (not for every upgrade required)</font></i> -$ doas sysupgrade <i><font color="#9A1900"># Update all binaries (including Kernel)</font></i> +<pre><font color="#ff0000">$ doas installboot sd0 </font><i><font color="#ababab"># Update the bootloader (not for every upgrade required)</font></i> +<font color="#ff0000">$ doas sysupgrade </font><i><font color="#ababab"># Update all binaries (including Kernel)</font></i> </pre> <br /> <span><span class='inlinecode'>sysupgrade</span> downloaded and upgraded to the next release and rebooted the system. After the reboot, I run:</span><br /> @@ -1143,9 +1143,9 @@ $ doas sysupgrade <i><font color="#9A1900"># Update all binaries (including Kern by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ doas sysmerge <i><font color="#9A1900"># Update system configuration files</font></i> -$ doas pkg_add -u <i><font color="#9A1900"># Update all packages</font></i> -$ doas reboot <i><font color="#9A1900"># Just in case, reboot one more time</font></i> +<pre><font color="#ff0000">$ doas sysmerge </font><i><font color="#ababab"># Update system configuration files</font></i> +<font color="#ff0000">$ doas pkg_add -u </font><i><font color="#ababab"># Update all packages</font></i> +<font color="#ff0000">$ doas reboot </font><i><font color="#ababab"># Just in case, reboot one more time</font></i> </pre> <br /> <span>That's it! Took me around 5 minutes in total! No issues, only these few comands, only 5 minutes! It just works! No problems, no conflicts, no tons (actually none) config file merge conflicts.</span><br /> @@ -1289,24 +1289,24 @@ jgs^^^^^^^`^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">log ()</font></b> { - <b><font color="#0000FF">local</font></b> -r <font color="#009900">level</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">message</font><font color="#990000">=</font><font color="#FF0000">"$1"</font><font color="#990000">;</font> <b><font color="#0000FF">shift</font></b> - <b><font color="#0000FF">local</font></b> -i <font color="#009900">pid</font><font color="#990000">=</font><font color="#FF0000">"$$"</font> +<font color="#7bc710">log ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">level</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">message</font><font color="#F3E651">=</font><font color="#bb00ff">"$1"</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">shift</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">pid</font><font color="#F3E651">=</font><font color="#bb00ff">"$$"</font> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">callee</font><font color="#990000">=</font><font color="#009900">${FUNCNAME[1]}</font> - <b><font color="#0000FF">local</font></b> -r <font color="#009900">stamp</font><font color="#990000">=</font><font color="#009900">$(</font>date <font color="#990000">+%</font>Y<font color="#990000">%</font>m<font color="#990000">%</font>d-<font color="#990000">%</font>H<font color="#990000">%</font>M<font color="#990000">%</font>S<font color="#990000">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">callee</font><font color="#F3E651">=</font><font color="#ff0000">${FUNCNAME[1]}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -r </font><font color="#ff0000">stamp</font><font color="#F3E651">=</font><font color="#ff0000">$(</font><font color="#ff0000">date </font><font color="#F3E651">+%</font><font color="#ff0000">Y</font><font color="#F3E651">%</font><font color="#ff0000">m</font><font color="#F3E651">%</font><font color="#ff0000">d-</font><font color="#F3E651">%</font><font color="#ff0000">H</font><font color="#F3E651">%</font><font color="#ff0000">M</font><font color="#F3E651">%</font><font color="#ff0000">S</font><font color="#F3E651">)</font> - echo <font color="#FF0000">"$level|$stamp|$pid|$callee|$message"</font> <font color="#990000">>&</font><font color="#993399">2</font> -} +<font color="#ff0000"> echo </font><font color="#bb00ff">"$level|$stamp|$pid|$callee|$message"</font><font color="#ff0000"> </font><font color="#F3E651">>&</font><font color="#bb00ff">2</font> +<font color="#ff0000">}</font> -<b><font color="#000000">at_home_friday_evening ()</font></b> { - log INFO <font color="#FF0000">'One Peperoni Pizza, please'</font> -} +<font color="#7bc710">at_home_friday_evening ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> log INFO </font><font color="#bb00ff">'One Peperoni Pizza, please'</font> +<font color="#ff0000">}</font> -at_home_friday_evening +<font color="#ff0000">at_home_friday_evening</font> </pre> <br /> <span>The output is as follows:</span><br /> @@ -1315,8 +1315,8 @@ at_home_friday_evening by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>❯ <font color="#990000">.</font>/logexample<font color="#990000">.</font>sh -INFO<font color="#990000">|</font><font color="#993399">20231210</font>-<font color="#993399">082732</font><font color="#990000">|</font><font color="#993399">123002</font><font color="#990000">|</font>at_home_friday_evening<font color="#990000">|</font>One Peperoni Pizza<font color="#990000">,</font> please +<pre><font color="#ff0000">❯ </font><font color="#F3E651">.</font><font color="#ff0000">/logexample</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<font color="#ff0000">INFO</font><font color="#F3E651">|</font><font color="#bb00ff">20231210</font><font color="#ff0000">-</font><font color="#bb00ff">082732</font><font color="#F3E651">|</font><font color="#bb00ff">123002</font><font color="#F3E651">|</font><font color="#ff0000">at_home_friday_evening</font><font color="#F3E651">|</font><font color="#ff0000">One Peperoni Pizza</font><font color="#F3E651">,</font><font color="#ff0000"> please</font> </pre> <br /> <h2 style='display: inline' id=''><span class='inlinecode'>:(){ :|:& };:</span></h2><br /> @@ -1350,18 +1350,18 @@ INFO<font color="#990000">|</font><font color="#993399">20231210</font>-<font co by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">outer()</font></b> { - <b><font color="#000000">inner()</font></b> { - echo <font color="#FF0000">'Intel inside!'</font> - } - inner -} +<font color="#7bc710">outer()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><font color="#7bc710">inner()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Intel inside!'</font> +<font color="#ff0000"> }</font> +<font color="#ff0000"> inner</font> +<font color="#ff0000">}</font> -inner -outer -inner +<font color="#ff0000">inner</font> +<font color="#ff0000">outer</font> +<font color="#ff0000">inner</font> </pre> <br /> <span>And let's execute it:</span><br /> @@ -1379,26 +1379,26 @@ Intel inside! by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">outer1()</font></b> { - <b><font color="#000000">inner()</font></b> { - echo <font color="#FF0000">'Intel inside!'</font> - } - inner -} +<font color="#7bc710">outer1()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><font color="#7bc710">inner()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Intel inside!'</font> +<font color="#ff0000"> }</font> +<font color="#ff0000"> inner</font> +<font color="#ff0000">}</font> -<b><font color="#000000">outer2()</font></b> { - <b><font color="#000000">inner()</font></b> { - echo <font color="#FF0000">'Wintel inside!'</font> - } - inner -} +<font color="#7bc710">outer2()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><font color="#7bc710">inner()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">'Wintel inside!'</font> +<font color="#ff0000"> }</font> +<font color="#ff0000"> inner</font> +<font color="#ff0000">}</font> -outer1 -inner -outer2 -inner +<font color="#ff0000">outer1</font> +<font color="#ff0000">inner</font> +<font color="#ff0000">outer2</font> +<font color="#ff0000">inner</font> </pre> <br /> <span>And let's run it:</span><br /> @@ -1419,14 +1419,14 @@ Wintel inside! by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">some_expensive_operations()</font></b> { - echo <font color="#FF0000">"Doing expensive operations with '$1' from pid $$"</font> -} +<font color="#7bc710">some_expensive_operations()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Doing expensive operations with '$1' from pid $$"</font> +<font color="#ff0000">}</font> -<b><font color="#0000FF">for</font></b> i <b><font color="#0000FF">in</font></b> {<font color="#993399">0</font><font color="#990000">..</font><font color="#993399">9</font>}<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> echo <font color="#009900">$i</font><font color="#990000">;</font> <b><font color="#0000FF">done</font></b> <font color="#990000">\</font> - <font color="#990000">|</font> xargs -P<font color="#993399">10</font> -I{} bash -c <font color="#FF0000">'some_expensive_operations "{}"'</font> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> {</font><font color="#bb00ff">0</font><font color="#F3E651">..</font><font color="#bb00ff">9</font><font color="#ff0000">}</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> echo </font><font color="#ff0000">$i</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">done</font></b><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> xargs -P</font><font color="#bb00ff">10</font><font color="#ff0000"> -I{} bash -c </font><font color="#bb00ff">'some_expensive_operations "{}"'</font> </pre> <br /> <span>We try here to run ten parallel processes; each of them should run the <span class='inlinecode'>some_expensive_operations</span> function with a different argument. The arguments are provided to <span class='inlinecode'>xargs</span> through <span class='inlinecode'>STDIN</span> one per line. When executed, we get this:</span><br /> @@ -1451,15 +1451,15 @@ bash: line 1: some_expensive_operations: command not found by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">some_expensive_operations()</font></b> { - echo <font color="#FF0000">"Doing expensive operations with '$1' from pid $$"</font> -} -<b><font color="#0000FF">export</font></b> -f some_expensive_operations +<font color="#7bc710">some_expensive_operations()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"Doing expensive operations with '$1' from pid $$"</font> +<font color="#ff0000">}</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> -f some_expensive_operations</font> -<b><font color="#0000FF">for</font></b> i <b><font color="#0000FF">in</font></b> {<font color="#993399">0</font><font color="#990000">..</font><font color="#993399">9</font>}<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> echo <font color="#009900">$i</font><font color="#990000">;</font> <b><font color="#0000FF">done</font></b> <font color="#990000">\</font> - <font color="#990000">|</font> xargs -P<font color="#993399">10</font> -I{} bash -c <font color="#FF0000">'some_expensive_operations "{}"'</font> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> {</font><font color="#bb00ff">0</font><font color="#F3E651">..</font><font color="#bb00ff">9</font><font color="#ff0000">}</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> echo </font><font color="#ff0000">$i</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">done</font></b><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> xargs -P</font><font color="#bb00ff">10</font><font color="#ff0000"> -I{} bash -c </font><font color="#bb00ff">'some_expensive_operations "{}"'</font> </pre> <br /> <span>When we run this now, we get:</span><br /> @@ -1484,19 +1484,19 @@ Doing expensive operations with '9' from pid 132840 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">some_other_function()</font></b> { - echo <font color="#FF0000">"$1"</font> -} +<font color="#7bc710">some_other_function()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$1"</font> +<font color="#ff0000">}</font> -<b><font color="#000000">some_expensive_operations()</font></b> { - some_other_function <font color="#FF0000">"Doing expensive operations with '$1' from pid $$"</font> -} -<b><font color="#0000FF">export</font></b> -f some_expensive_operations +<font color="#7bc710">some_expensive_operations()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> some_other_function </font><font color="#bb00ff">"Doing expensive operations with '$1' from pid $$"</font> +<font color="#ff0000">}</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> -f some_expensive_operations</font> -<b><font color="#0000FF">for</font></b> i <b><font color="#0000FF">in</font></b> {<font color="#993399">0</font><font color="#990000">..</font><font color="#993399">9</font>}<font color="#990000">;</font> <b><font color="#0000FF">do</font></b> echo <font color="#009900">$i</font><font color="#990000">;</font> <b><font color="#0000FF">done</font></b> <font color="#990000">\</font> - <font color="#990000">|</font> xargs -P<font color="#993399">10</font> -I{} bash -c <font color="#FF0000">'some_expensive_operations "{}"'</font> +<b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> {</font><font color="#bb00ff">0</font><font color="#F3E651">..</font><font color="#bb00ff">9</font><font color="#ff0000">}</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b><font color="#ff0000"> echo </font><font color="#ff0000">$i</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">done</font></b><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#F3E651">|</font><font color="#ff0000"> xargs -P</font><font color="#bb00ff">10</font><font color="#ff0000"> -I{} bash -c </font><font color="#bb00ff">'some_expensive_operations "{}"'</font> </pre> <br /> <span>... because <span class='inlinecode'>some_other_function</span> isn't exported! You will also need to add an <span class='inlinecode'>export -f some_other_function</span>!</span><br /> @@ -1509,22 +1509,22 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#000000">foo()</font></b> { - <b><font color="#0000FF">local</font></b> <font color="#009900">foo</font><font color="#990000">=</font>bar <i><font color="#9A1900"># Declare local/dynamic variable</font></i> - bar - echo <font color="#FF0000">"$foo"</font> -} +<font color="#7bc710">foo()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> </font><font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">bar </font><i><font color="#ababab"># Declare local/dynamic variable</font></i> +<font color="#ff0000"> bar</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$foo"</font> +<font color="#ff0000">}</font> -<b><font color="#000000">bar()</font></b> { - echo <font color="#FF0000">"$foo"</font> - <font color="#009900">foo</font><font color="#990000">=</font>baz -} +<font color="#7bc710">bar()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$foo"</font> +<font color="#ff0000"> </font><font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">baz</font> +<font color="#ff0000">}</font> -<font color="#009900">foo</font><font color="#990000">=</font>foo <i><font color="#9A1900"># Declare global variable</font></i> -foo <i><font color="#9A1900"># Call function foo</font></i> -echo <font color="#FF0000">"$foo"</font> +<font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">foo </font><i><font color="#ababab"># Declare global variable</font></i> +<font color="#ff0000">foo </font><i><font color="#ababab"># Call function foo</font></i> +<font color="#ff0000">echo </font><font color="#bb00ff">"$foo"</font> </pre> <br /> <span>Let's pause a minute. What do you think the output would be?</span><br /> @@ -1549,34 +1549,34 @@ foo by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<b><font color="#0000FF">declare</font></b> -r <font color="#009900">foo</font><font color="#990000">=</font>foo -<b><font color="#0000FF">declare</font></b> -r <font color="#009900">bar</font><font color="#990000">=</font>bar +<b><font color="#ffffff">declare</font></b><font color="#ff0000"> -r </font><font color="#ff0000">foo</font><font color="#F3E651">=</font><font color="#ff0000">foo</font> +<b><font color="#ffffff">declare</font></b><font color="#ff0000"> -r </font><font color="#ff0000">bar</font><font color="#F3E651">=</font><font color="#ff0000">bar</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"$bar"</font> <font color="#990000">=</font> bar <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - echo ok1 - <b><font color="#0000FF">fi</font></b> -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> bar </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok1</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<b><font color="#ffffff">fi</font></b> -<b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">]</font> <font color="#990000">&&</font> <font color="#990000">[</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - echo ok2a -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok2a</font> +<b><font color="#ffffff">fi</font></b> -<font color="#990000">[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">]</font> <font color="#990000">&&</font> <font color="#990000">[</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">]</font> <font color="#990000">&&</font> echo ok2b +<font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> echo ok2b</font> -<b><font color="#0000FF">if</font></b> <font color="#990000">[[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">]];</font> <b><font color="#0000FF">then</font></b> - echo ok3a -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">]];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok3a</font> +<b><font color="#ffffff">fi</font></b> - <font color="#990000">[[</font> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <font color="#FF0000">"$bar"</font> <font color="#990000">==</font> bar <font color="#990000">]]</font> <font color="#990000">&&</font> echo ok3b +<font color="#ff0000"> </font><font color="#F3E651">[[</font><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">==</font><font color="#ff0000"> bar </font><font color="#F3E651">]]</font><font color="#ff0000"> </font><font color="#F3E651">&&</font><font color="#ff0000"> echo ok3b</font> -<b><font color="#0000FF">if</font></b> <b><font color="#0000FF">test</font></b> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <b><font color="#0000FF">test</font></b> <font color="#FF0000">"$bar"</font> <font color="#990000">=</font> bar<font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - echo ok4a -<b><font color="#0000FF">fi</font></b> +<b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> bar</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo ok4a</font> +<b><font color="#ffffff">fi</font></b> -<b><font color="#0000FF">test</font></b> <font color="#FF0000">"$foo"</font> <font color="#990000">=</font> foo <font color="#990000">&&</font> <b><font color="#0000FF">test</font></b> <font color="#FF0000">"$bar"</font> <font color="#990000">=</font> bar <font color="#990000">&&</font> echo ok4b +<b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> foo </font><font color="#F3E651">&&</font><font color="#ff0000"> </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#bb00ff">"$bar"</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> bar </font><font color="#F3E651">&&</font><font color="#ff0000"> echo ok4b</font> </pre> <br /> <span>The output we get is:</span><br /> @@ -1600,18 +1600,18 @@ ok4b by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -<i><font color="#9A1900"># Single line comment</font></i> +<i><font color="#ababab"># Single line comment</font></i> -<i><font color="#9A1900"># These are two single line</font></i> -<i><font color="#9A1900"># comments one after another</font></i> +<i><font color="#ababab"># These are two single line</font></i> +<i><font color="#ababab"># comments one after another</font></i> -<font color="#990000">:</font> <font color="#990000"><<</font>COMMENT -This is another way a -multi line comment -could be written<font color="#990000">!</font> -COMMENT +<font color="#F3E651">:</font><font color="#ff0000"> </font><font color="#F3E651"><<</font><font color="#ff0000">COMMENT</font> +<font color="#ff0000">This is another way a</font> +<font color="#ff0000">multi line comment</font> +<font color="#ff0000">could be written</font><font color="#F3E651">!</font> +<font color="#ff0000">COMMENT</font> </pre> <br /> <span>I will not demonstrate the execution of this script, as it won't print anything! It's obviously not the most pretty way of commenting on your code, but it could sometimes be handy!</span><br /> @@ -1624,11 +1624,11 @@ COMMENT by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><i><font color="#9A1900">#!/usr/bin/env bash</font></i> +<pre><i><font color="#ababab">#!/usr/bin/env bash</font></i> -echo foo -echo echo baz <font color="#990000">>></font> <font color="#009900">$0</font> -echo bar +<font color="#ff0000">echo foo</font> +<font color="#ff0000">echo echo baz </font><font color="#F3E651">>></font><font color="#ff0000"> </font><font color="#ff0000">$0</font> +<font color="#ff0000">echo bar</font> </pre> <br /> <span>When it is run, it will do:</span><br /> @@ -1977,42 +1977,42 @@ photoalbum makemake by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> photoalbum makemake -You may now customize <font color="#990000">.</font>/photoalbumrc and run make - -<font color="#990000">%</font> cat Makefile -all<font color="#990000">:</font> - photoalbum generate photoalbumrc -clean<font color="#990000">:</font> - photoalbum clean photoalbumrc - -<font color="#990000">%</font> cat photoalbumrc -<i><font color="#9A1900"># The title of the photoalbum</font></i> -<font color="#009900">TITLE</font><font color="#990000">=</font><font color="#FF0000">'A simple Photoalbum'</font> - -<i><font color="#9A1900"># Thumbnail height geometry</font></i> -<font color="#009900">THUMBHEIGHT</font><font color="#990000">=</font><font color="#993399">300</font> -<i><font color="#9A1900"># Normal geometry height (when viewing photo). Uncomment, to keep original size.</font></i> -<font color="#009900">HEIGHT</font><font color="#990000">=</font><font color="#993399">1200</font> -<i><font color="#9A1900"># Max previews per page.</font></i> -<font color="#009900">MAXPREVIEWS</font><font color="#990000">=</font><font color="#993399">40</font> -<i><font color="#9A1900"># Randomly shuffle all previews.</font></i> -<i><font color="#9A1900"># SHUFFLE=yes</font></i> - -<i><font color="#9A1900"># Diverse directories, need to be full paths, not relative!</font></i> -<font color="#009900">INCOMING_DIR</font><font color="#990000">=</font><font color="#009900">$(pwd)</font>/incoming -<font color="#009900">DIST_DIR</font><font color="#990000">=</font><font color="#009900">$(pwd)</font>/dist -<font color="#009900">TEMPLATE_DIR</font><font color="#990000">=</font>/usr/share/photoalbum/templates/default -<i><font color="#9A1900">#TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal</font></i> - -<i><font color="#9A1900"># Includes a .tar of the incoming dir in the dist, can be yes or no</font></i> -<font color="#009900">TARBALL_INCLUDE</font><font color="#990000">=</font>yes -<font color="#009900">TARBALL_SUFFIX</font><font color="#990000">=.</font>tar -<font color="#009900">TAR_OPTS</font><font color="#990000">=</font><font color="#FF0000">'-c'</font> - -<i><font color="#9A1900"># Some debugging options</font></i> -<i><font color="#9A1900">#set -e</font></i> -<i><font color="#9A1900">#set -x</font></i> +<pre><font color="#F3E651">%</font><font color="#ff0000"> photoalbum makemake</font> +<font color="#ff0000">You may now customize </font><font color="#F3E651">.</font><font color="#ff0000">/photoalbumrc and run make</font> + +<font color="#F3E651">%</font><font color="#ff0000"> cat Makefile</font> +<font color="#ff0000">all</font><font color="#F3E651">:</font> +<font color="#ff0000"> photoalbum generate photoalbumrc</font> +<font color="#ff0000">clean</font><font color="#F3E651">:</font> +<font color="#ff0000"> photoalbum clean photoalbumrc</font> + +<font color="#F3E651">%</font><font color="#ff0000"> cat photoalbumrc</font> +<i><font color="#ababab"># The title of the photoalbum</font></i> +<font color="#ff0000">TITLE</font><font color="#F3E651">=</font><font color="#bb00ff">'A simple Photoalbum'</font> + +<i><font color="#ababab"># Thumbnail height geometry</font></i> +<font color="#ff0000">THUMBHEIGHT</font><font color="#F3E651">=</font><font color="#bb00ff">300</font> +<i><font color="#ababab"># Normal geometry height (when viewing photo). Uncomment, to keep original size.</font></i> +<font color="#ff0000">HEIGHT</font><font color="#F3E651">=</font><font color="#bb00ff">1200</font> +<i><font color="#ababab"># Max previews per page.</font></i> +<font color="#ff0000">MAXPREVIEWS</font><font color="#F3E651">=</font><font color="#bb00ff">40</font> +<i><font color="#ababab"># Randomly shuffle all previews.</font></i> +<i><font color="#ababab"># SHUFFLE=yes</font></i> + +<i><font color="#ababab"># Diverse directories, need to be full paths, not relative!</font></i> +<font color="#ff0000">INCOMING_DIR</font><font color="#F3E651">=</font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/incoming</font> +<font color="#ff0000">DIST_DIR</font><font color="#F3E651">=</font><font color="#ff0000">$(pwd)</font><font color="#ff0000">/dist</font> +<font color="#ff0000">TEMPLATE_DIR</font><font color="#F3E651">=</font><font color="#ff0000">/usr/share/photoalbum/templates/default</font> +<i><font color="#ababab">#TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal</font></i> + +<i><font color="#ababab"># Includes a .tar of the incoming dir in the dist, can be yes or no</font></i> +<font color="#ff0000">TARBALL_INCLUDE</font><font color="#F3E651">=</font><font color="#ff0000">yes</font> +<font color="#ff0000">TARBALL_SUFFIX</font><font color="#F3E651">=.</font><font color="#ff0000">tar</font> +<font color="#ff0000">TAR_OPTS</font><font color="#F3E651">=</font><font color="#bb00ff">'-c'</font> + +<i><font color="#ababab"># Some debugging options</font></i> +<i><font color="#ababab">#set -e</font></i> +<i><font color="#ababab">#set -x</font></i> </pre> <br /> <span>In the case for <span class='inlinecode'>irregular.ninja</span>, I changed the defaults to the following:</span><br /> @@ -2021,38 +2021,38 @@ clean<font color="#990000">:</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#FF6600">--- photoalbumrc 2023-10-29 21:42:00.894202045 +0200</font> -<font color="#009900">+++ photoalbumrc.new 2023-06-04 10:40:08.030994440 +0300</font> -<font color="#0000FF">@@ -1,23 +1,24 @@</font> - # The title of the photoalbum -<font color="#FF6600">-TITLE='A simple Photoalbum'</font> -<font color="#009900">+TITLE='Irregular.Ninja'</font> - - # Thumbnail height geometry -<font color="#FF6600">-THUMBHEIGHT=300</font> -<font color="#009900">+THUMBHEIGHT=400</font> - # Normal geometry height (when viewing photo). Uncomment, to keep original size. -<font color="#FF6600">-HEIGHT=1200</font> -<font color="#009900">+HEIGHT=1800</font> - # Max previews per page. - MAXPREVIEWS=40 -<font color="#FF6600">-# Randomly shuffle all previews.</font> -<font color="#FF6600">-# SHUFFLE=yes</font> -<font color="#009900">+# Randomly shuffle</font> -<font color="#009900">+SHUFFLE=yes</font> - - # Diverse directories, need to be full paths, not relative! -<font color="#FF6600">-INCOMING_DIR=$(pwd)/incoming</font> -<font color="#009900">+INCOMING_DIR=~/Nextcloud/Photos/irregular.ninja</font> - DIST_DIR=$(pwd)/dist - TEMPLATE_DIR=/usr/share/photoalbum/templates/default - #TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal - - # Includes a .tar of the incoming dir in the dist, can be yes or no -<font color="#FF6600">-TARBALL_INCLUDE=yes</font> -<font color="#009900">+TARBALL_INCLUDE=no</font> - TARBALL_SUFFIX=.tar - TAR_OPTS='-c' +<pre><font color="#ff0000">--- photoalbumrc 2023-10-29 21:42:00.894202045 +0200</font> +<font color="#ff0000">+++ photoalbumrc.new 2023-06-04 10:40:08.030994440 +0300</font> +<font color="#ff0000">@@ -1,23 +1,24 @@</font> +<font color="#ff0000"> # The title of the photoalbum</font> +<font color="#ff0000">-TITLE='A simple Photoalbum'</font> +<font color="#ff0000">+TITLE='Irregular.Ninja'</font> + +<font color="#ff0000"> # Thumbnail height geometry</font> +<font color="#ff0000">-THUMBHEIGHT=300</font> +<font color="#ff0000">+THUMBHEIGHT=400</font> +<font color="#ff0000"> # Normal geometry height (when viewing photo). Uncomment, to keep original size.</font> +<font color="#ff0000">-HEIGHT=1200</font> +<font color="#ff0000">+HEIGHT=1800</font> +<font color="#ff0000"> # Max previews per page.</font> +<font color="#ff0000"> MAXPREVIEWS=40</font> +<font color="#ff0000">-# Randomly shuffle all previews.</font> +<font color="#ff0000">-# SHUFFLE=yes</font> +<font color="#ff0000">+# Randomly shuffle</font> +<font color="#ff0000">+SHUFFLE=yes</font> + +<font color="#ff0000"> # Diverse directories, need to be full paths, not relative!</font> +<font color="#ff0000">-INCOMING_DIR=$(pwd)/incoming</font> +<font color="#ff0000">+INCOMING_DIR=~/Nextcloud/Photos/irregular.ninja</font> +<font color="#ff0000"> DIST_DIR=$(pwd)/dist</font> +<font color="#ff0000"> TEMPLATE_DIR=/usr/share/photoalbum/templates/default</font> +<font color="#ff0000"> #TEMPLATE_DIR=/usr/share/photoalbum/templates/minimal</font> + +<font color="#ff0000"> # Includes a .tar of the incoming dir in the dist, can be yes or no</font> +<font color="#ff0000">-TARBALL_INCLUDE=yes</font> +<font color="#ff0000">+TARBALL_INCLUDE=no</font> +<font color="#ff0000"> TARBALL_SUFFIX=.tar</font> +<font color="#ff0000"> TAR_OPTS='-c'</font> </pre> <br /> <span>So I changed the album title, adjusted some image and thumbnail dimensions, and I want all images to be randomly shuffled every time the album is generated! I also have all my photos in my Nextcloud Photo directory and don't want to copy them to the local <span class='inlinecode'>incoming</span> directory. Also, a tarball containing the whole album as a download isn't provided.</span><br /> @@ -2208,7 +2208,7 @@ blurs html index.html photos thumbs by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt --grep INFO --files <font color="#FF0000">"/var/log/dserver/*.log"</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt --grep INFO --files </font><font color="#bb00ff">"/var/log/dserver/*.log"</font> </pre> <br /> <span>Hint: you can also provide a comma separated server list, e.g.: <span class='inlinecode'>servers server1.example.org,server2.example.org:PORT,...</span></span><br /> @@ -2221,7 +2221,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt --grep INFO <font color="#FF0000">"/var/log/dserver/*.log"</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt --grep INFO </font><font color="#bb00ff">"/var/log/dserver/*.log"</font> </pre> <br /> <h2 style='display: inline' id='Aggregatinglogs'>Aggregating logs</h2><br /> @@ -2234,10 +2234,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select sum($goroutines),sum($cgocalls),</font> -<font color="#FF0000"> last($time),max(lifetimeConnections)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select sum($goroutines),sum($cgocalls),</font> +<font color="#bb00ff"> last($time),max(lifetimeConnections)'</font> </pre> <br /> <span>Beware: For map-reduce queries to work, you have to ensure that DTail supports your log format. Check out the documentaiton of the DTail query language and the DTail log formats on the DTail homepage for more information.</span><br /> @@ -2250,10 +2250,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - <font color="#FF0000">'from STATS select sum($goroutines),sum($cgocalls),</font> -<font color="#FF0000"> last($time),max(lifetimeConnections)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> </font><font color="#bb00ff">'from STATS select sum($goroutines),sum($cgocalls),</font> +<font color="#bb00ff"> last($time),max(lifetimeConnections)'</font> </pre> <br /> <span>Here is another example:</span><br /> @@ -2262,10 +2262,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <a href='./dtail-usage-examples/dtail-map2.gif'><img alt='Tail map-reduce example 2' title='Tail map-reduce example 2' src='./dtail-usage-examples/dtail-map2.gif' /></a><br /> @@ -2276,9 +2276,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select ... outfile append result.csv'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select ... outfile append result.csv'</font> </pre> <br /> <h2 style='display: inline' id='Howtousedcat'>How to use <span class='inlinecode'>dcat</span></h2><br /> @@ -2291,7 +2291,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat --servers serverlist<font color="#990000">.</font>txt --files /etc/hostname +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt --files /etc/hostname</font> </pre> <br /> <a href='./dtail-usage-examples/dcat.gif'><img alt='Cat example' title='Cat example' src='./dtail-usage-examples/dcat.gif' /></a><br /> @@ -2302,7 +2302,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat --servers serverlist<font color="#990000">.</font>txt /etc/hostname +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt /etc/hostname</font> </pre> <br /> <h2 style='display: inline' id='Howtousedgrep'>How to use <span class='inlinecode'>dgrep</span></h2><br /> @@ -2313,9 +2313,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dgrep --servers server1<font color="#990000">.</font>example<font color="#990000">.</font>org<font color="#990000">:</font><font color="#993399">2223</font> <font color="#990000">\</font> - --files /etc/passwd <font color="#990000">\</font> - --regex nologin +<pre><font color="#F3E651">%</font><font color="#ff0000"> dgrep --servers server1</font><font color="#F3E651">.</font><font color="#ff0000">example</font><font color="#F3E651">.</font><font color="#ff0000">org</font><font color="#F3E651">:</font><font color="#bb00ff">2223</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files /etc/passwd </font><font color="#F3E651">\</font> +<font color="#ff0000"> --regex nologin</font> </pre> <br /> <span>Generally, <span class='inlinecode'>dgrep</span> is also a very useful way to search historic application logs for certain content.</span><br /> @@ -2332,10 +2332,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dmap --servers serverlist<font color="#990000">.</font>txt <font color="#990000">\</font> - --files <font color="#FF0000">'/var/log/dserver/*.log'</font> <font color="#990000">\</font> - --query <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dmap --servers serverlist</font><font color="#F3E651">.</font><font color="#ff0000">txt </font><font color="#F3E651">\</font> +<font color="#ff0000"> --files </font><font color="#bb00ff">'/var/log/dserver/*.log'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <span>Remember: For that to work, you have to make sure that DTail supports your log format. You can either use the ones already defined in <span class='inlinecode'>internal/mapr/logformat</span> or add an extension to support a custom log format. The example here works out of the box though, as DTail understands its own log format already. </span><br /> @@ -2358,9 +2358,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dmap --files /var/log/dserver/dserver<font color="#990000">.</font>log - --query <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> dmap --files /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> +<font color="#ff0000"> --query </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <span>As a shorthand version the following command can be used:</span><br /> @@ -2369,9 +2369,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dmap <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> <font color="#990000">\</font> - /var/log/dsever/dserver<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dmap </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> /var/log/dsever/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <span>You can also use a file input pipe as follows:</span><br /> @@ -2380,9 +2380,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat /var/log/dserver/dserver<font color="#990000">.</font>log <font color="#990000">|</font> <font color="#990000">\</font> - dmap <font color="#FF0000">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> -<font color="#FF0000"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log </font><font color="#F3E651">|</font><font color="#ff0000"> </font><font color="#F3E651">\</font> +<font color="#ff0000"> dmap </font><font color="#bb00ff">'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,</font> +<font color="#bb00ff"> lifetimeConnections group by $hostname order by max($cgocalls)'</font> </pre> <br /> <h3 style='display: inline' id='AggregatingCSVfiles'>Aggregating CSV files</h3><br /> @@ -2393,16 +2393,16 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat example<font color="#990000">.</font>csv -name<font color="#990000">,</font>lastname<font color="#990000">,</font>age<font color="#990000">,</font>profession -Michael<font color="#990000">,</font>Jordan<font color="#990000">,</font><font color="#993399">40</font><font color="#990000">,</font>Basketball player -Michael<font color="#990000">,</font>Jackson<font color="#990000">,</font><font color="#993399">100</font><font color="#990000">,</font>Singer -Albert<font color="#990000">,</font>Einstein<font color="#990000">,</font><font color="#993399">200</font><font color="#990000">,</font>Physician -<font color="#990000">%</font> dmap --query <font color="#FF0000">'select lastname,name where age > 40 logformat csv outfile result.csv'</font> example<font color="#990000">.</font>csv -<font color="#990000">%</font> cat result<font color="#990000">.</font>csv -lastname<font color="#990000">,</font>name -Jackson<font color="#990000">,</font>Michael -Einstein<font color="#990000">,</font>Albert +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat example</font><font color="#F3E651">.</font><font color="#ff0000">csv</font> +<font color="#ff0000">name</font><font color="#F3E651">,</font><font color="#ff0000">lastname</font><font color="#F3E651">,</font><font color="#ff0000">age</font><font color="#F3E651">,</font><font color="#ff0000">profession</font> +<font color="#ff0000">Michael</font><font color="#F3E651">,</font><font color="#ff0000">Jordan</font><font color="#F3E651">,</font><font color="#bb00ff">40</font><font color="#F3E651">,</font><font color="#ff0000">Basketball player</font> +<font color="#ff0000">Michael</font><font color="#F3E651">,</font><font color="#ff0000">Jackson</font><font color="#F3E651">,</font><font color="#bb00ff">100</font><font color="#F3E651">,</font><font color="#ff0000">Singer</font> +<font color="#ff0000">Albert</font><font color="#F3E651">,</font><font color="#ff0000">Einstein</font><font color="#F3E651">,</font><font color="#bb00ff">200</font><font color="#F3E651">,</font><font color="#ff0000">Physician</font> +<font color="#F3E651">%</font><font color="#ff0000"> dmap --query </font><font color="#bb00ff">'select lastname,name where age > 40 logformat csv outfile result.csv'</font><font color="#ff0000"> example</font><font color="#F3E651">.</font><font color="#ff0000">csv</font> +<font color="#F3E651">%</font><font color="#ff0000"> cat result</font><font color="#F3E651">.</font><font color="#ff0000">csv</font> +<font color="#ff0000">lastname</font><font color="#F3E651">,</font><font color="#ff0000">name</font> +<font color="#ff0000">Jackson</font><font color="#F3E651">,</font><font color="#ff0000">Michael</font> +<font color="#ff0000">Einstein</font><font color="#F3E651">,</font><font color="#ff0000">Albert</font> </pre> <br /> <span>DMap can also be used to query and aggregate CSV files from remote servers.</span><br /> @@ -2415,44 +2415,44 @@ Einstein<font color="#990000">,</font>Albert by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail /var/log/dserver/dserver<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dtail --logLevel trace /var/log/dserver/dserver<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dtail --logLevel trace /var/log/dserver/dserver</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat /etc/passwd +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat /etc/passwd</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dcat --plain /etc/passwd <font color="#990000">></font> /etc/test -<i><font color="#9A1900"># Should show no differences.</font></i> -diff /etc/test /etc/passwd +<pre><font color="#F3E651">%</font><font color="#ff0000"> dcat --plain /etc/passwd </font><font color="#F3E651">></font><font color="#ff0000"> /etc/test</font> +<i><font color="#ababab"># Should show no differences.</font></i> +<font color="#ff0000">diff /etc/test /etc/passwd </font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dgrep --regex ERROR --files /var/log/dserver/dsever<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dgrep --regex ERROR --files /var/log/dserver/dsever</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <!-- Generator: GNU source-highlight 3.1.9 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> dgrep --before <font color="#993399">10</font> --after <font color="#993399">10</font> --max <font color="#993399">10</font> --grep ERROR /var/log/dserver/dsever<font color="#990000">.</font>log +<pre><font color="#F3E651">%</font><font color="#ff0000"> dgrep --before </font><font color="#bb00ff">10</font><font color="#ff0000"> --after </font><font color="#bb00ff">10</font><font color="#ff0000"> --max </font><font color="#bb00ff">10</font><font color="#ff0000"> --grep ERROR /var/log/dserver/dsever</font><font color="#F3E651">.</font><font color="#ff0000">log</font> </pre> <br /> <span>Use <span class='inlinecode'>--help</span> for more available options. Or go to the DTail page for more information! Hope you find DTail useful!</span><br /> @@ -2609,9 +2609,9 @@ DC on fire: by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">if</font></b> <font color="#990000">[</font> -n <font color="#FF0000">"$foo"</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - echo <font color="#FF0000">"$foo"</font> -<b><font color="#0000FF">fi</font></b> +<pre><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> -n </font><font color="#bb00ff">"$foo"</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> echo </font><font color="#bb00ff">"$foo"</font> +<b><font color="#ffffff">fi</font></b> </pre> <br /> <span>Please run <span class='inlinecode'>source-highlight --lang-list</span> for a list of all supported languages.</span><br /> @@ -2640,7 +2640,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">declare</font></b> -xr <font color="#009900">MASTODON_URI</font><font color="#990000">=</font><font color="#FF0000">'https://fosstodon.org/@snonux'</font> +<pre><b><font color="#ffffff">declare</font></b><font color="#ff0000"> -xr </font><font color="#ff0000">MASTODON_URI</font><font color="#F3E651">=</font><font color="#bb00ff">'https://fosstodon.org/@snonux'</font> </pre> <br /> <span>and add the following into your <span class='inlinecode'>index.gmi</span>:</span><br /> @@ -2655,7 +2655,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF"><a</font></b> <font color="#009900">href</font><font color="#990000">=</font><font color="#FF0000">'https://fosstodon.org/@snonux'</font> <font color="#009900">rel</font><font color="#990000">=</font><font color="#FF0000">'me'</font><b><font color="#0000FF">></font></b>Me at Mastodon<b><font color="#0000FF"></a></font></b> +<pre><b><font color="#ffffff"><a</font></b><font color="#ff0000"> </font><b><font color="#F35E1E">href</font></b><font color="#F3E651">=</font><font color="#bb00ff">'https://fosstodon.org/@snonux'</font><font color="#ff0000"> </font><b><font color="#F35E1E">rel</font></b><font color="#F3E651">=</font><font color="#bb00ff">'me'</font><b><font color="#ffffff">></font></b><font color="#ff0000">Me at Mastodon</font><b><font color="#ffffff"></a></font></b> </pre> <br /> <h2 style='display: inline' id='More'>More</h2><br /> @@ -3104,11 +3104,11 @@ Have a nice day! by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>git clone https<font color="#990000">:</font>//codeberg<font color="#990000">.</font>org/snonux/gogios<font color="#990000">.</font>git -cd gogios -go build -o gogios cmd/gogios/main<font color="#990000">.</font>go -doas cp gogios /usr/local/bin/gogios -doas chmod <font color="#993399">755</font> /usr/local/bin/gogios +<pre><font color="#ff0000">git clone https</font><font color="#F3E651">:</font><font color="#ff0000">//codeberg</font><font color="#F3E651">.</font><font color="#ff0000">org/snonux/gogios</font><font color="#F3E651">.</font><font color="#ff0000">git</font> +<font color="#ff0000">cd gogios</font> +<font color="#ff0000">go build -o gogios cmd/gogios/main</font><font color="#F3E651">.</font><font color="#ff0000">go</font> +<font color="#ff0000">doas cp gogios /usr/local/bin/gogios</font> +<font color="#ff0000">doas chmod </font><font color="#bb00ff">755</font><font color="#ff0000"> /usr/local/bin/gogios</font> </pre> <br /> <span>You can use cross-compilation if you want to compile Gogios for OpenBSD on a Linux system without installing the Go compiler on OpenBSD. Follow these steps:</span><br /> @@ -3117,9 +3117,9 @@ doas chmod <font color="#993399">755</font> /usr/local/bin/gogios by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">export</font></b> <font color="#009900">GOOS</font><font color="#990000">=</font>openbsd -<b><font color="#0000FF">export</font></b> <font color="#009900">GOARCH</font><font color="#990000">=</font>amd64 -go build -o gogios cmd/gogios/main<font color="#990000">.</font>go +<pre><b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">GOOS</font><font color="#F3E651">=</font><font color="#ff0000">openbsd</font> +<b><font color="#ffffff">export</font></b><font color="#ff0000"> </font><font color="#ff0000">GOARCH</font><font color="#F3E651">=</font><font color="#ff0000">amd64</font> +<font color="#ff0000">go build -o gogios cmd/gogios/main</font><font color="#F3E651">.</font><font color="#ff0000">go</font> </pre> <br /> <span>On your OpenBSD system, copy the binary to <span class='inlinecode'>/usr/local/bin/gogios</span> and set the correct permissions as described in the previous section. All steps described here you could automate with your configuration management system of choice. I use Rexify, the friendly configuration management system, to automate the installation, but that is out of the scope of this document.</span><br /> @@ -3134,11 +3134,11 @@ go build -o gogios cmd/gogios/main<font color="#990000">.</font>go by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>doas adduser -group _gogios -batch _gogios -doas usermod -d /var/run/gogios _gogios -doas mkdir -p /var/run/gogios -doas chown _gogios<font color="#990000">:</font>_gogios /var/run/gogios -doas chmod <font color="#993399">750</font> /var/run/gogios +<pre><font color="#ff0000">doas adduser -group _gogios -batch _gogios</font> +<font color="#ff0000">doas usermod -d /var/run/gogios _gogios</font> +<font color="#ff0000">doas mkdir -p /var/run/gogios</font> +<font color="#ff0000">doas chown _gogios</font><font color="#F3E651">:</font><font color="#ff0000">_gogios /var/run/gogios</font> +<font color="#ff0000">doas chmod </font><font color="#bb00ff">750</font><font color="#ff0000"> /var/run/gogios</font> </pre> <br /> <span>Please note that creating a user and group might differ depending on your operating system. For other operating systems, consult their documentation for creating system users and groups.</span><br /> @@ -3151,8 +3151,8 @@ doas chmod <font color="#993399">750</font> /var/run/gogios by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>doas pkg_add monitoring-plugins -doas pkg_add nrpe <i><font color="#9A1900"># If you want to execute checks remotely via NRPE.</font></i> +<pre><font color="#ff0000">doas pkg_add monitoring-plugins</font> +<font color="#ff0000">doas pkg_add nrpe </font><i><font color="#ababab"># If you want to execute checks remotely via NRPE.</font></i> </pre> <br /> <span>Once the installation is complete, you can find the monitoring plugins in the <span class='inlinecode'>/usr/local/libexec/nagios</span> directory, which then can be configured to be used in <span class='inlinecode'>gogios.json</span>.</span><br /> @@ -3179,41 +3179,41 @@ echo 'This is a test email from OpenBSD.' | mail -s 'Test Email' by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">{</font> - "EmailTo": "<font color="#FF0000">paul@dev.buetow.org</font>"<font color="#990000">,</font> - "EmailFrom": "<font color="#FF0000">gogios@buetow.org</font>"<font color="#990000">,</font> - "CheckTimeoutS": <font color="#993399">10</font><font color="#990000">,</font> - "CheckConcurrency": <font color="#993399">2</font><font color="#990000">,</font> - "StateDir": "<font color="#FF0000">/var/run/gogios</font>"<font color="#990000">,</font> - "Checks": <font color="#990000">{</font> - "Check ICMP4 www.foo.zone": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_ping</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font> "-H"<font color="#990000">,</font> "www.foo.zone"<font color="#990000">,</font> "-4"<font color="#990000">,</font> "-w"<font color="#990000">,</font> "50,10%"<font color="#990000">,</font> "-c"<font color="#990000">,</font> "100,15%" <font color="#990000">],</font> - "Retries": <font color="#993399">3</font><font color="#990000">,</font> - "RetryInterval": <font color="#993399">10</font> - <font color="#990000">},</font> - "Check ICMP6 www.foo.zone": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_ping</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font> "-H"<font color="#990000">,</font> "www.foo.zone"<font color="#990000">,</font> "-6"<font color="#990000">,</font> "-w"<font color="#990000">,</font> "50,10%"<font color="#990000">,</font> "-c"<font color="#990000">,</font> "100,15%" <font color="#990000">],</font> - "Retries": <font color="#993399">3</font><font color="#990000">,</font> - "RetryInterval": <font color="#993399">10</font> - <font color="#990000">},</font> - "www.foo.zone HTTP IPv4": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_http</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font>"www.foo.zone"<font color="#990000">,</font> "-4"<font color="#990000">],</font> - "DependsOn": <font color="#990000">[</font>"Check ICMP4 www.foo.zone"<font color="#990000">]</font> - <font color="#990000">},</font> - "www.foo.zone HTTP IPv6": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_http</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font>"www.foo.zone"<font color="#990000">,</font> "-6"<font color="#990000">],</font> - "DependsOn": <font color="#990000">[</font>"Check ICMP6 www.foo.zone"<font color="#990000">]</font> - <font color="#990000">}</font> - "Check NRPE Disk Usage foo.zone": <font color="#990000">{</font> - "Plugin": "<font color="#FF0000">/usr/local/libexec/nagios/check_nrpe</font>"<font color="#990000">,</font> - "Args": <font color="#990000">[</font>"-H"<font color="#990000">,</font> "foo.zone"<font color="#990000">,</font> "-c"<font color="#990000">,</font> "check_disk"<font color="#990000">,</font> "-p"<font color="#990000">,</font> "5666"<font color="#990000">,</font> "-4"<font color="#990000">]</font> - <font color="#990000">}</font> - <font color="#990000">}</font> -<font color="#990000">}</font> +<pre><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">EmailTo</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">paul@dev.buetow.org</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">EmailFrom</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">gogios@buetow.org</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">CheckTimeoutS</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">10</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">CheckConcurrency</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">2</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">StateDir</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/var/run/gogios</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Checks</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP4 www.foo.zone</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_ping</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-H</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-4</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-w</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">50,10%</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-c</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">100,15%</font><font color="#ff0000">"</font><font color="#ff0000"> </font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Retries</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">3</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">RetryInterval</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">10</font> +<font color="#ff0000"> </font><font color="#F3E651">},</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP6 www.foo.zone</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_ping</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-H</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-6</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-w</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">50,10%</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-c</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">100,15%</font><font color="#ff0000">"</font><font color="#ff0000"> </font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Retries</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">3</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">RetryInterval</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#bb00ff">10</font> +<font color="#ff0000"> </font><font color="#F3E651">},</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone HTTP IPv4</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_http</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-4</font><font color="#ff0000">"</font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">DependsOn</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP4 www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">]</font> +<font color="#ff0000"> </font><font color="#F3E651">},</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone HTTP IPv6</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_http</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-6</font><font color="#ff0000">"</font><font color="#F3E651">],</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">DependsOn</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">Check ICMP6 www.foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">]</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Check NRPE Disk Usage foo.zone</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Plugin</font><font color="#ff0000">"</font><font color="#ff0000">:</font><font color="#ff0000"> "</font><font color="#bb00ff">/usr/local/libexec/nagios/check_nrpe</font><font color="#ff0000">"</font><font color="#F3E651">,</font> +<font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">Args</font><font color="#ff0000">"</font><font color="#ff0000">: </font><font color="#F3E651">[</font><font color="#ff0000">"</font><font color="#ff0000">-H</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">foo.zone</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-c</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">check_disk</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-p</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">5666</font><font color="#ff0000">"</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#ff0000">"</font><font color="#ff0000">-4</font><font color="#ff0000">"</font><font color="#F3E651">]</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#F3E651">}</font> </pre> <br /> <ul> @@ -3242,7 +3242,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>doas -u _gogios /usr/local/bin/gogios -cfg /etc/gogios<font color="#990000">.</font>json +<pre><font color="#ff0000">doas -u _gogios /usr/local/bin/gogios -cfg /etc/gogios</font><font color="#F3E651">.</font><font color="#ff0000">json</font> </pre> <br /> <span>To run Gogios via CRON on OpenBSD as the <span class='inlinecode'>gogios</span> user and check all services once per minute, follow these steps:</span><br /> @@ -3467,7 +3467,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>$ raku guprecords<font color="#990000">.</font>raku --stats<font color="#990000">=</font><font color="#009900">dir</font><font color="#990000">=</font><font color="#009900">$HOME</font>/git/uprecords/stats --all +<pre><font color="#ff0000">$ raku guprecords</font><font color="#F3E651">.</font><font color="#ff0000">raku --stats</font><font color="#F3E651">=</font><font color="#ff0000">dir</font><font color="#F3E651">=</font><font color="#ff0000">$HOME</font><font color="#ff0000">/git/uprecords/stats --all</font> </pre> <br /> <span>This command will generate a comprehensive uptime report from the collected statistics, making it easy to review and enjoy the data.</span><br /> @@ -3624,19 +3624,19 @@ no1 in 455 days, 18:52:44 | at Sun Jul 21 07:37:51 2024 by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> ds +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> ds</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"golang.org/x/exp/constraints"</font> -<font color="#990000">)</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"golang.org/x/exp/constraints"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">type</font></b> Integer <b><font color="#0000FF">interface</font></b> <font color="#FF0000">{</font> - constraints<font color="#990000">.</font>Integer -<font color="#FF0000">}</font> +<b><font color="#ffffff">type</font></b><font color="#ff0000"> Integer </font><b><font color="#ffffff">interface</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> constraints</font><font color="#F3E651">.</font><font color="#ff0000">Integer</font> +<font color="#F3E651">}</font> -<b><font color="#0000FF">type</font></b> Number <b><font color="#0000FF">interface</font></b> <font color="#FF0000">{</font> - constraints<font color="#990000">.</font>Integer <font color="#990000">|</font> constraints<font color="#990000">.</font>Float -<font color="#FF0000">}</font> +<b><font color="#ffffff">type</font></b><font color="#ff0000"> Number </font><b><font color="#ffffff">interface</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> constraints</font><font color="#F3E651">.</font><font color="#ff0000">Integer </font><font color="#F3E651">|</font><font color="#ff0000"> constraints</font><font color="#F3E651">.</font><font color="#ff0000">Float</font> +<font color="#F3E651">}</font> </pre> <br /> @@ -3648,19 +3648,19 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> ds +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> ds</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"fmt"</font> - <font color="#FF0000">"math/rand"</font> - <font color="#FF0000">"strings"</font> -<font color="#990000">)</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"fmt"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"math/rand"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"strings"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">type</font></b> ArrayList<font color="#990000">[</font>V Number<font color="#990000">]</font> <font color="#990000">[]</font>V +<b><font color="#ffffff">type</font></b><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">[]</font><font color="#ff0000">V</font> -<b><font color="#0000FF">func</font></b> NewArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">return</font></b> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> -<font color="#FF0000">}</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> NewArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#F3E651">}</font> </pre> <br /> <span>As you can see, the code uses Go generics, which I refactored recently. Besides the default constructor (which only returns an empty <span class='inlinecode'>ArrayList</span> with a given capacity), there are also a bunch of special constructors. <span class='inlinecode'>NewRandomArrayList</span> is returning an <span class='inlinecode'>ArrayList</span> with random numbers, <span class='inlinecode'>NewAscendingArrayList</span> and <span class='inlinecode'>NewDescendingArrayList</span> are returning <span class='inlinecode'>ArrayList</span>s in either ascending or descending order. They all will be used later on for testing and benchmarking the algorithms.</span><br /> @@ -3669,35 +3669,35 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> NewRandomArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l<font color="#990000">,</font> max int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> l<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">if</font></b> max <font color="#990000">></font> <font color="#993399">0</font> <font color="#FF0000">{</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>rand<font color="#990000">.</font><b><font color="#000000">Intn</font></b><font color="#990000">(</font>max<font color="#990000">))</font> - <b><font color="#0000FF">continue</font></b> - <font color="#FF0000">}</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>rand<font color="#990000">.</font><b><font color="#000000">Int</font></b><font color="#990000">())</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> a -<font color="#FF0000">}</font> - -<b><font color="#0000FF">func</font></b> NewAscendingArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> l<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>i<font color="#990000">)</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> a -<font color="#FF0000">}</font> - -<b><font color="#0000FF">func</font></b> NewDescendingArrayList<font color="#990000">[</font>V Number<font color="#990000">](</font>l int<font color="#990000">)</font> ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font>ArrayList<font color="#990000">[</font>V<font color="#990000">],</font> l<font color="#990000">)</font> - j <font color="#990000">:=</font> l <font color="#990000">-</font> <font color="#993399">1</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> l<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> <b><font color="#000000">V</font></b><font color="#990000">(</font>j<font color="#990000">)</font> - j<font color="#990000">--</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> a -<font color="#FF0000">}</font> +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> NewRandomArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l</font><font color="#F3E651">,</font><font color="#ff0000"> max int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> l</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> max </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">rand</font><font color="#F3E651">.</font><font color="#7bc710">Intn</font><font color="#F3E651">(</font><font color="#ff0000">max</font><font color="#F3E651">))</font> +<font color="#ff0000"> </font><b><font color="#ffffff">continue</font></b> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">rand</font><font color="#F3E651">.</font><font color="#7bc710">Int</font><font color="#F3E651">())</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a</font> +<font color="#F3E651">}</font> + +<b><font color="#ffffff">func</font></b><font color="#ff0000"> NewAscendingArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> l</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">i</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a</font> +<font color="#F3E651">}</font> + +<b><font color="#ffffff">func</font></b><font color="#ff0000"> NewDescendingArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V Number</font><font color="#F3E651">](</font><font color="#ff0000">l int</font><font color="#F3E651">)</font><font color="#ff0000"> ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">],</font><font color="#ff0000"> l</font><font color="#F3E651">)</font> +<font color="#ff0000"> j </font><font color="#F3E651">:=</font><font color="#ff0000"> l </font><font color="#F3E651">-</font><font color="#ff0000"> </font><font color="#bb00ff">1</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> l</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">V</font><font color="#F3E651">(</font><font color="#ff0000">j</font><font color="#F3E651">)</font> +<font color="#ff0000"> j</font><font color="#F3E651">--</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> a</font> +<font color="#F3E651">}</font> </pre> <br /> <h2 style='display: inline' id='Helpermethods'>Helper methods</h2><br /> @@ -3708,25 +3708,25 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> <font color="#990000">(</font>a ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> <b><font color="#000000">FirstN</font></b><font color="#990000">(</font>n int<font color="#990000">)</font> <font color="#009900">string</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">var</font></b> sb strings<font color="#990000">.</font>Builder - j <font color="#990000">:=</font> n +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">a ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> </font><font color="#7bc710">FirstN</font><font color="#F3E651">(</font><font color="#ff0000">n int</font><font color="#F3E651">)</font><font color="#ff0000"> </font><b><font color="#F35E1E">string</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">var</font></b><font color="#ff0000"> sb strings</font><font color="#F3E651">.</font><font color="#ff0000">Builder</font> +<font color="#ff0000"> j </font><font color="#F3E651">:=</font><font color="#ff0000"> n</font> - l <font color="#990000">:=</font> <b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">)</font> - <b><font color="#0000FF">if</font></b> j <font color="#990000">></font> l <font color="#FF0000">{</font> - j <font color="#990000">=</font> l - <font color="#FF0000">}</font> +<font color="#ff0000"> l </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> j </font><font color="#F3E651">></font><font color="#ff0000"> l </font><font color="#F3E651">{</font> +<font color="#ff0000"> j </font><font color="#F3E651">=</font><font color="#ff0000"> l</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <font color="#993399">0</font><font color="#990000">;</font> i <font color="#990000"><</font> j<font color="#990000">;</font> i<font color="#990000">++</font> <font color="#FF0000">{</font> - fmt<font color="#990000">.</font><b><font color="#000000">Fprintf</font></b><font color="#990000">(&</font>sb<font color="#990000">,</font> <font color="#FF0000">"%v "</font><font color="#990000">,</font> a<font color="#990000">[</font>i<font color="#990000">])</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651"><</font><font color="#ff0000"> j</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">++</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> fmt</font><font color="#F3E651">.</font><font color="#7bc710">Fprintf</font><font color="#F3E651">(&</font><font color="#ff0000">sb</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">"%v "</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">])</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">if</font></b> j <font color="#990000"><</font> l <font color="#FF0000">{</font> - fmt<font color="#990000">.</font><b><font color="#000000">Fprintf</font></b><font color="#990000">(&</font>sb<font color="#990000">,</font> <font color="#FF0000">"... "</font><font color="#990000">)</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> j </font><font color="#F3E651"><</font><font color="#ff0000"> l </font><font color="#F3E651">{</font> +<font color="#ff0000"> fmt</font><font color="#F3E651">.</font><font color="#7bc710">Fprintf</font><font color="#F3E651">(&</font><font color="#ff0000">sb</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">"... "</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">return</font></b> sb<font color="#990000">.</font><b><font color="#000000">String</font></b><font color="#990000">()</font> -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> sb</font><font color="#F3E651">.</font><font color="#7bc710">String</font><font color="#F3E651">()</font> +<font color="#F3E651">}</font> </pre> <br /> <span>The <span class='inlinecode'>Sorted</span> method checks whether the <span class='inlinecode'>ArrayList</span> is sorted. This will be used by the unit tests later on:</span><br /> @@ -3735,14 +3735,14 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> <font color="#990000">(</font>a ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> <b><font color="#000000">Sorted</font></b><font color="#990000">()</font> <font color="#009900">bool</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">for</font></b> i <font color="#990000">:=</font> <b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">)</font> <font color="#990000">-</font> <font color="#993399">1</font><font color="#990000">;</font> i <font color="#990000">></font> <font color="#993399">0</font><font color="#990000">;</font> i<font color="#990000">--</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">if</font></b> a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000"><</font> a<font color="#990000">[</font>i<font color="#990000">-</font><font color="#993399">1</font><font color="#990000">]</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">return</font></b> false - <font color="#FF0000">}</font> - <font color="#FF0000">}</font> - <b><font color="#0000FF">return</font></b> true -<font color="#FF0000">}</font> +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">a ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> </font><font color="#7bc710">Sorted</font><font color="#F3E651">()</font><font color="#ff0000"> </font><b><font color="#F35E1E">bool</font></b><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> i </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">-</font><font color="#ff0000"> </font><font color="#bb00ff">1</font><font color="#F3E651">;</font><font color="#ff0000"> i </font><font color="#F3E651">></font><font color="#ff0000"> </font><font color="#bb00ff">0</font><font color="#F3E651">;</font><font color="#ff0000"> i</font><font color="#F3E651">--</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651"><</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">-</font><font color="#bb00ff">1</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> false</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> true</font> +<font color="#F3E651">}</font> </pre> <br /> <span>And the last utility method used is <span class='inlinecode'>Swap</span>, which allows swapping the values of two indices in the <span class='inlinecode'>ArrayList</span>:</span><br /> @@ -3751,11 +3751,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">func</font></b> <font color="#990000">(</font>a ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> <b><font color="#000000">Swap</font></b><font color="#990000">(</font>i<font color="#990000">,</font> j int<font color="#990000">)</font> <font color="#FF0000">{</font> - aux <font color="#990000">:=</font> a<font color="#990000">[</font>i<font color="#990000">]</font> - a<font color="#990000">[</font>i<font color="#990000">]</font> <font color="#990000">=</font> a<font color="#990000">[</font>j<font color="#990000">]</font> - a<font color="#990000">[</font>j<font color="#990000">]</font> <font color="#990000">=</font> aux -<font color="#FF0000">}</font> +<pre><b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font><font color="#ff0000">a ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> </font><font color="#7bc710">Swap</font><font color="#F3E651">(</font><font color="#ff0000">i</font><font color="#F3E651">,</font><font color="#ff0000"> j int</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> aux </font><font color="#F3E651">:=</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">i</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">j</font><font color="#F3E651">]</font> +<font color="#ff0000"> a</font><font color="#F3E651">[</font><font color="#ff0000">j</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">=</font><font color="#ff0000"> aux</font> +<font color="#F3E651">}</font> </pre> <br /> @@ -3768,40 +3768,40 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> sort +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> sort</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"codeberg.org/snonux/algorithms/ds"</font> - <font color="#FF0000">"sync"</font> - <font color="#FF0000">"time"</font> -<font color="#990000">)</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"codeberg.org/snonux/algorithms/ds"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"sync"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"time"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">func</font></b> Sleep<font color="#990000">[</font>V ds<font color="#990000">.</font>Integer<font color="#990000">](</font>a ds<font color="#990000">.</font>ArrayList<font color="#990000">[</font>V<font color="#990000">])</font> ds<font color="#990000">.</font>ArrayList<font color="#990000">[</font>V<font color="#990000">]</font> <font color="#FF0000">{</font> - sorted <font color="#990000">:=</font> ds<font color="#990000">.</font>NewArrayList<font color="#990000">[</font>V<font color="#990000">](</font><b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">))</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> Sleep</font><font color="#F3E651">[</font><font color="#ff0000">V ds</font><font color="#F3E651">.</font><font color="#ff0000">Integer</font><font color="#F3E651">](</font><font color="#ff0000">a ds</font><font color="#F3E651">.</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">])</font><font color="#ff0000"> ds</font><font color="#F3E651">.</font><font color="#ff0000">ArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">]</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> sorted </font><font color="#F3E651">:=</font><font color="#ff0000"> ds</font><font color="#F3E651">.</font><font color="#ff0000">NewArrayList</font><font color="#F3E651">[</font><font color="#ff0000">V</font><font color="#F3E651">](</font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">))</font> - numCh <font color="#990000">:=</font> <b><font color="#000000">make</font></b><font color="#990000">(</font><b><font color="#0000FF">chan</font></b> V<font color="#990000">)</font> - <b><font color="#0000FF">var</font></b> wg sync<font color="#990000">.</font>WaitGroup - wg<font color="#990000">.</font><b><font color="#000000">Add</font></b><font color="#990000">(</font><b><font color="#000000">len</font></b><font color="#990000">(</font>a<font color="#990000">))</font> +<font color="#ff0000"> numCh </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><font color="#7bc710">make</font><font color="#F3E651">(</font><b><font color="#ffffff">chan</font></b><font color="#ff0000"> V</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">var</font></b><font color="#ff0000"> wg sync</font><font color="#F3E651">.</font><font color="#ff0000">WaitGroup</font> +<font color="#ff0000"> wg</font><font color="#F3E651">.</font><font color="#7bc710">Add</font><font color="#F3E651">(</font><font color="#7bc710">len</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">))</font> - <b><font color="#0000FF">go</font></b> <b><font color="#0000FF">func</font></b><font color="#990000">()</font> <font color="#FF0000">{</font> - wg<font color="#990000">.</font><b><font color="#000000">Wait</font></b><font color="#990000">()</font> - <b><font color="#000000">close</font></b><font color="#990000">(</font>numCh<font color="#990000">)</font> - <font color="#FF0000">}</font><font color="#990000">()</font> +<font color="#ff0000"> </font><b><font color="#ffffff">go</font></b><font color="#ff0000"> </font><b><font color="#ffffff">func</font></b><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> wg</font><font color="#F3E651">.</font><font color="#7bc710">Wait</font><font color="#F3E651">()</font> +<font color="#ff0000"> </font><font color="#7bc710">close</font><font color="#F3E651">(</font><font color="#ff0000">numCh</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">()</font> - <b><font color="#0000FF">for</font></b> _<font color="#990000">,</font> num <font color="#990000">:=</font> <b><font color="#0000FF">range</font></b> a <font color="#FF0000">{</font> - <b><font color="#0000FF">go</font></b> <b><font color="#0000FF">func</font></b><font color="#990000">(</font>num V<font color="#990000">)</font> <font color="#FF0000">{</font> - <b><font color="#0000FF">defer</font></b> wg<font color="#990000">.</font><b><font color="#000000">Done</font></b><font color="#990000">()</font> - time<font color="#990000">.</font><b><font color="#000000">Sleep</font></b><font color="#990000">(</font>time<font color="#990000">.</font><b><font color="#000000">Duration</font></b><font color="#990000">(</font>num<font color="#990000">)</font> <font color="#990000">*</font> time<font color="#990000">.</font>Second<font color="#990000">)</font> - numCh <font color="#990000"><-</font> num - <font color="#FF0000">}</font><font color="#990000">(</font>num<font color="#990000">)</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> _</font><font color="#F3E651">,</font><font color="#ff0000"> num </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><b><font color="#ffffff">range</font></b><font color="#ff0000"> a </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">go</font></b><font color="#ff0000"> </font><b><font color="#ffffff">func</font></b><font color="#F3E651">(</font><font color="#ff0000">num V</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> </font><b><font color="#ffffff">defer</font></b><font color="#ff0000"> wg</font><font color="#F3E651">.</font><font color="#7bc710">Done</font><font color="#F3E651">()</font> +<font color="#ff0000"> time</font><font color="#F3E651">.</font><font color="#7bc710">Sleep</font><font color="#F3E651">(</font><font color="#ff0000">time</font><font color="#F3E651">.</font><font color="#7bc710">Duration</font><font color="#F3E651">(</font><font color="#ff0000">num</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">*</font><font color="#ff0000"> time</font><font color="#F3E651">.</font><font color="#ff0000">Second</font><font color="#F3E651">)</font> +<font color="#ff0000"> numCh </font><font color="#F3E651"><-</font><font color="#ff0000"> num</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font><font color="#F3E651">(</font><font color="#ff0000">num</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">for</font></b> num <font color="#990000">:=</font> <b><font color="#0000FF">range</font></b> numCh <font color="#FF0000">{</font> - sorted <font color="#990000">=</font> <b><font color="#000000">append</font></b><font color="#990000">(</font>sorted<font color="#990000">,</font> num<font color="#990000">)</font> - <font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> num </font><font color="#F3E651">:=</font><font color="#ff0000"> </font><b><font color="#ffffff">range</font></b><font color="#ff0000"> numCh </font><font color="#F3E651">{</font> +<font color="#ff0000"> sorted </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">append</font><font color="#F3E651">(</font><font color="#ff0000">sorted</font><font color="#F3E651">,</font><font color="#ff0000"> num</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> - <b><font color="#0000FF">return</font></b> sorted -<font color="#FF0000">}</font> +<font color="#ff0000"> </font><b><font color="#ffffff">return</font></b><font color="#ff0000"> sorted</font> +<font color="#F3E651">}</font> </pre> <br /> <span>This Go code implements the sleep sort algorithm using generics and goroutines. The main function <span class='inlinecode'>Sleep[V ds.Integer](a ds.ArrayList[V]) ds.ArrayList[V]</span> takes a generic <span class='inlinecode'>ArrayList</span> as input and returns a sorted <span class='inlinecode'>ArrayList</span>. The code creates a separate goroutine for each element in the input array, sleeps for a duration proportional to the element's value, and then sends the element to a channel. Another goroutine waits for all the sleeping goroutines to finish and then closes the channel. The sorted result <span class='inlinecode'>ArrayList</span> is constructed by appending the elements received from the channel in the order they arrive. The <span class='inlinecode'>sync.WaitGroup</span> is used to synchronize goroutines and ensure that all of them have completed before closing the channel.</span><br /> @@ -3814,22 +3814,22 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">package</font></b> sort +<pre><b><font color="#ffffff">package</font></b><font color="#ff0000"> sort</font> -<b><font color="#0000FF">import</font></b> <font color="#990000">(</font> - <font color="#FF0000">"fmt"</font> - <font color="#FF0000">"testing"</font> +<b><font color="#ffffff">import</font></b><font color="#ff0000"> </font><font color="#F3E651">(</font> +<font color="#ff0000"> </font><font color="#bb00ff">"fmt"</font> +<font color="#ff0000"> </font><font color="#bb00ff">"testing"</font> - <font color="#FF0000">"codeberg.org/snonux/algorithms/ds"</font> -<font color="#990000">)</font> +<font color="#ff0000"> </font><font color="#bb00ff">"codeberg.org/snonux/algorithms/ds"</font> +<font color="#F3E651">)</font> -<b><font color="#0000FF">func</font></b> <b><font color="#000000">TestSleepSort</font></b><font color="#990000">(</font>t <font color="#990000">*</font>testing<font color="#990000">.</font>T<font color="#990000">)</font> <font color="#FF0000">{</font> - a <font color="#990000">:=</font> ds<font color="#990000">.</font>NewRandomArrayList<font color="#990000">[</font>int<font color="#990000">](</font><font color="#993399">10</font><font color="#990000">,</font> <font color="#993399">10</font><font color="#990000">)</font> - a <font color="#990000">=</font> <b><font color="#000000">Sleep</font></b><font color="#990000">(</font>a<font color="#990000">)</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">!</font>a<font color="#990000">.</font><b><font color="#000000">Sorted</font></b><font color="#990000">()</font> <font color="#FF0000">{</font> - t<font color="#990000">.</font><b><font color="#000000">Errorf</font></b><font color="#990000">(</font><font color="#FF0000">"Array not sorted: %v"</font><font color="#990000">,</font> a<font color="#990000">)</font> - <font color="#FF0000">}</font> -<font color="#FF0000">}</font> +<b><font color="#ffffff">func</font></b><font color="#ff0000"> </font><font color="#7bc710">TestSleepSort</font><font color="#F3E651">(</font><font color="#ff0000">t </font><font color="#F3E651">*</font><font color="#ff0000">testing</font><font color="#F3E651">.</font><font color="#ff0000">T</font><font color="#F3E651">)</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> a </font><font color="#F3E651">:=</font><font color="#ff0000"> ds</font><font color="#F3E651">.</font><font color="#ff0000">NewRandomArrayList</font><font color="#F3E651">[</font><font color="#ff0000">int</font><font color="#F3E651">](</font><font color="#bb00ff">10</font><font color="#F3E651">,</font><font color="#ff0000"> </font><font color="#bb00ff">10</font><font color="#F3E651">)</font> +<font color="#ff0000"> a </font><font color="#F3E651">=</font><font color="#ff0000"> </font><font color="#7bc710">Sleep</font><font color="#F3E651">(</font><font color="#ff0000">a</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000">a</font><font color="#F3E651">.</font><font color="#7bc710">Sorted</font><font color="#F3E651">()</font><font color="#ff0000"> </font><font color="#F3E651">{</font> +<font color="#ff0000"> t</font><font color="#F3E651">.</font><font color="#7bc710">Errorf</font><font color="#F3E651">(</font><font color="#bb00ff">"Array not sorted: %v"</font><font color="#F3E651">,</font><font color="#ff0000"> a</font><font color="#F3E651">)</font> +<font color="#ff0000"> </font><font color="#F3E651">}</font> +<font color="#F3E651">}</font> </pre> <br /> <span>As you can see, it takes <span class='inlinecode'>9s</span> here for the algorithm to finish (which is the highest value in the <span class='inlinecode'>ArrayList</span>):</span><br /> @@ -3838,11 +3838,11 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre>❯ go <b><font color="#0000FF">test</font></b> <font color="#990000">.</font>/sort -v -run SleepSort -<font color="#990000">===</font> RUN TestSleepSort ---- PASS<font color="#990000">:</font> TestSleepSort <font color="#990000">(</font><font color="#993399">9</font><font color="#990000">.</font>00s<font color="#990000">)</font> -PASS -ok codeberg<font color="#990000">.</font>org/snonux/algorithms/sort <font color="#993399">9</font><font color="#990000">.</font>002s +<pre><font color="#ff0000">❯ go </font><b><font color="#ffffff">test</font></b><font color="#ff0000"> </font><font color="#F3E651">.</font><font color="#ff0000">/sort -v -run SleepSort</font> +<font color="#F3E651">===</font><font color="#ff0000"> RUN TestSleepSort</font> +<font color="#ff0000">--- PASS</font><font color="#F3E651">:</font><font color="#ff0000"> TestSleepSort </font><font color="#F3E651">(</font><font color="#bb00ff">9</font><font color="#F3E651">.</font><font color="#ff0000">00s</font><font color="#F3E651">)</font> +<font color="#ff0000">PASS</font> +<font color="#ff0000">ok codeberg</font><font color="#F3E651">.</font><font color="#ff0000">org/snonux/algorithms/sort </font><font color="#bb00ff">9</font><font color="#F3E651">.</font><font color="#ff0000">002s</font> </pre> <br /> <span>I won't write any benchmark for sleep sort; that will be done for the algorithms to come in this series :-).</span><br /> @@ -4123,8 +4123,8 @@ Blablabla... by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#0000FF">declare</font></b> -xr <font color="#009900">PRE_GENERATE_HOOK</font><font color="#990000">=.</font>/pre_generate_hook<font color="#990000">.</font>sh -<b><font color="#0000FF">declare</font></b> -xr <font color="#009900">POST_PUBLISH_HOOK</font><font color="#990000">=.</font>/post_publish_hook<font color="#990000">.</font>sh +<pre><b><font color="#ffffff">declare</font></b><font color="#ff0000"> -xr </font><font color="#ff0000">PRE_GENERATE_HOOK</font><font color="#F3E651">=.</font><font color="#ff0000">/pre_generate_hook</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> +<b><font color="#ffffff">declare</font></b><font color="#ff0000"> -xr </font><font color="#ff0000">POST_PUBLISH_HOOK</font><font color="#F3E651">=.</font><font color="#ff0000">/post_publish_hook</font><font color="#F3E651">.</font><font color="#ff0000">sh</font> </pre> <br /> <h2 style='display: inline' id='UseofsaferBashoptions'>Use of safer Bash options</h2><br /> @@ -4141,10 +4141,10 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat gemfeed<font color="#990000">/</font><font color="#993399">2023</font>-<font color="#993399">02</font>-<font color="#993399">26</font>-title-here<font color="#990000">.</font>gmi -<i><font color="#9A1900"># Title here</font></i> +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat gemfeed</font><font color="#F3E651">/</font><font color="#bb00ff">2023</font><font color="#ff0000">-</font><font color="#bb00ff">02</font><font color="#ff0000">-</font><font color="#bb00ff">26</font><font color="#ff0000">-title-here</font><font color="#F3E651">.</font><font color="#ff0000">gmi</font> +<i><font color="#ababab"># Title here</font></i> -The remaining content of the Gemtext file<font color="#990000">...</font> +<font color="#ff0000">The remaining content of the Gemtext file</font><font color="#F3E651">...</font> </pre> <br /> <span>Gemtexter will add a line starting with <span class='inlinecode'>> Published at ...</span> now. Any subsequent Atom feed generation will then use that date.</span><br /> @@ -4153,12 +4153,12 @@ The remaining content of the Gemtext file<font color="#990000">...</font> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">%</font> cat gemfeed<font color="#990000">/</font><font color="#993399">2023</font>-<font color="#993399">02</font>-<font color="#993399">26</font>-title-here<font color="#990000">.</font>gmi -<i><font color="#9A1900"># Title here</font></i> +<pre><font color="#F3E651">%</font><font color="#ff0000"> cat gemfeed</font><font color="#F3E651">/</font><font color="#bb00ff">2023</font><font color="#ff0000">-</font><font color="#bb00ff">02</font><font color="#ff0000">-</font><font color="#bb00ff">26</font><font color="#ff0000">-title-here</font><font color="#F3E651">.</font><font color="#ff0000">gmi</font> +<i><font color="#ababab"># Title here</font></i> -<font color="#990000">></font> Published at <font color="#993399">2023</font>-<font color="#993399">02</font>-26T21<font color="#990000">:</font><font color="#993399">43</font><font color="#990000">:</font><font color="#993399">51</font><font color="#990000">+</font><font color="#993399">01</font><font color="#990000">:</font><font color="#993399">00</font> +<font color="#F3E651">></font><font color="#ff0000"> Published at </font><font color="#bb00ff">2023</font><font color="#ff0000">-</font><font color="#bb00ff">02</font><font color="#ff0000">-26T21</font><font color="#F3E651">:</font><font color="#bb00ff">43</font><font color="#F3E651">:</font><font color="#bb00ff">51</font><font color="#F3E651">+</font><font color="#bb00ff">01</font><font color="#F3E651">:</font><font color="#bb00ff">00</font> -The remaining content of the Gemtext file<font color="#990000">...</font> +<font color="#ff0000">The remaining content of the Gemtext file</font><font color="#F3E651">...</font> </pre> <br /> <h2 style='display: inline' id='XMLLintsupport'>XMLLint support</h2><br /> @@ -5326,23 +5326,23 @@ jgs (________\ \ by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><b><font color="#000000">check_dependencies ()</font></b> { - <i><font color="#9A1900"># At least, Bash 5 is required</font></i> - <b><font color="#0000FF">local</font></b> -i <font color="#009900">required_version</font><font color="#990000">=</font><font color="#993399">5</font> - <font color="#009900">IFS</font><font color="#990000">=.</font> <b><font color="#0000FF">read</font></b> -ra version <font color="#990000"><<<</font> <font color="#FF0000">"$BASH_VERSION"</font> - <b><font color="#0000FF">if</font></b> <font color="#990000">[</font> <font color="#FF0000">"${version[0]}"</font> -lt <font color="#009900">$required_version</font> <font color="#990000">];</font> <b><font color="#0000FF">then</font></b> - log ERROR <font color="#FF0000">"ERROR, </font><font color="#CC33CC">\"</font><font color="#FF0000">bash</font><font color="#CC33CC">\"</font><font color="#FF0000"> must be at least at major version $required_version!"</font> - <b><font color="#0000FF">exit</font></b> <font color="#993399">2</font> - <b><font color="#0000FF">fi</font></b> - - <i><font color="#9A1900"># These must be the GNU versions of the commands</font></i> - <b><font color="#0000FF">for</font></b> tool <b><font color="#0000FF">in</font></b> <font color="#009900">$DATE</font> <font color="#009900">$SED</font> <font color="#009900">$GREP</font><font color="#990000">;</font> <b><font color="#0000FF">do</font></b> - <b><font color="#0000FF">if</font></b> <font color="#990000">!</font> <font color="#009900">$tool</font> --version <font color="#990000">|</font> grep -q GNU<font color="#990000">;</font> <b><font color="#0000FF">then</font></b> - log ERROR <font color="#FF0000">"ERROR, </font><font color="#CC33CC">\"</font><font color="#FF0000">$tool</font><font color="#CC33CC">\"</font><font color="#FF0000"> command is not the GNU version, please install!"</font> - <b><font color="#0000FF">exit</font></b> <font color="#993399">2</font> - <b><font color="#0000FF">fi</font></b> - <b><font color="#0000FF">done</font></b> -} +<pre><font color="#7bc710">check_dependencies ()</font><font color="#ff0000"> {</font> +<font color="#ff0000"> </font><i><font color="#ababab"># At least, Bash 5 is required</font></i> +<font color="#ff0000"> </font><b><font color="#ffffff">local</font></b><font color="#ff0000"> -i </font><font color="#ff0000">required_version</font><font color="#F3E651">=</font><font color="#bb00ff">5</font> +<font color="#ff0000"> </font><font color="#ff0000">IFS</font><font color="#F3E651">=.</font><font color="#ff0000"> </font><b><font color="#ffffff">read</font></b><font color="#ff0000"> -ra version </font><font color="#F3E651"><<<</font><font color="#ff0000"> </font><font color="#bb00ff">"$BASH_VERSION"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">[</font><font color="#ff0000"> </font><font color="#bb00ff">"${version[0]}"</font><font color="#ff0000"> -lt </font><font color="#ff0000">$required_version</font><font color="#ff0000"> </font><font color="#F3E651">];</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> log ERROR </font><font color="#bb00ff">"ERROR, </font><font color="#ffffff">\"</font><font color="#bb00ff">bash</font><font color="#ffffff">\"</font><font color="#bb00ff"> must be at least at major version $required_version!"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> + +<font color="#ff0000"> </font><i><font color="#ababab"># These must be the GNU versions of the commands</font></i> +<font color="#ff0000"> </font><b><font color="#ffffff">for</font></b><font color="#ff0000"> tool </font><b><font color="#ffffff">in</font></b><font color="#ff0000"> </font><font color="#ff0000">$DATE</font><font color="#ff0000"> </font><font color="#ff0000">$SED</font><font color="#ff0000"> </font><font color="#ff0000">$GREP</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">do</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">if</font></b><font color="#ff0000"> </font><font color="#F3E651">!</font><font color="#ff0000"> </font><font color="#ff0000">$tool</font><font color="#ff0000"> --version </font><font color="#F3E651">|</font><font color="#ff0000"> grep -q GNU</font><font color="#F3E651">;</font><font color="#ff0000"> </font><b><font color="#ffffff">then</font></b> +<font color="#ff0000"> log ERROR </font><font color="#bb00ff">"ERROR, </font><font color="#ffffff">\"</font><font color="#bb00ff">$tool</font><font color="#ffffff">\"</font><font color="#bb00ff"> command is not the GNU version, please install!"</font> +<font color="#ff0000"> </font><b><font color="#ffffff">exit</font></b><font color="#ff0000"> </font><font color="#bb00ff">2</font> +<font color="#ff0000"> </font><b><font color="#ffffff">fi</font></b> +<font color="#ff0000"> </font><b><font color="#ffffff">done</font></b> +<font color="#ff0000">}</font> </pre> <br /> <span>Especially macOS users didn't read the <span class='inlinecode'>README</span> carefully enough to install GNU Grep, GNU Sed and GNU Date before using Gemtexter.</span><br /> @@ -5363,7 +5363,7 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -<pre><font color="#990000">.</font>/gemtexter --generate <font color="#FF0000">'.*hello.*'</font> +<pre><font color="#F3E651">.</font><font color="#ff0000">/gemtexter --generate </font><font color="#bb00ff">'.*hello.*'</font> </pre> <br /> <h3 style='display: inline' id='Revampedgitsupport'>Revamped <span class='inlinecode'>git</span> support</h3><br /> |