From 33daba4f27bc6145faabbc210824f0a39f0ffd81 Mon Sep 17 00:00:00 2001 From: Paul Buetow Date: Tue, 26 Sep 2023 21:21:02 +0300 Subject: Update content for html --- gemfeed/2008-06-26-perl-poetry.html | 2 +- ...12-29-using-my-nokia-n95-for-fixing-my-mta.html | 2 +- gemfeed/2010-04-09-standard-ml-and-haskell.html | 2 +- ...010-05-07-lazy-evaluation-with-standarn-ml.html | 2 +- .../2010-05-09-the-fype-programming-language.html | 2 +- .../2011-05-07-perl-daemon-service-framework.html | 2 +- .../2014-03-24-the-fibonacci.pl.c-polyglot.html | 2 +- ...2-05-run-debian-on-your-phone-with-debroid.html | 2 +- gemfeed/2016-04-03-offsite-backup-with-zfs.html | 2 +- ...04-09-jails-and-zfs-on-freebsd-with-puppet.html | 2 +- .../2016-04-16-offsite-backup-with-zfs-part2.html | 2 +- ...inning-up-my-own-authoritative-dns-servers.html | 2 +- ...20-object-oriented-programming-with-ansi-c.html | 2 +- ...alistic-load-testing-with-ioriot-for-linux.html | 2 +- ...-22-dtail-the-distributed-log-tail-program.html | 2 +- gemfeed/2021-04-24-welcome-to-the-geminispace.html | 2 +- ...021-05-16-personal-bash-coding-style-guide.html | 2 +- ...5-gemtexter-one-bash-script-to-rule-it-all.html | 2 +- gemfeed/2021-07-04-the-well-grounded-rubyist.html | 2 +- ...-08-01-on-being-pedantic-about-open-source.html | 4 +- gemfeed/2021-09-12-keep-it-simple-and-stupid.html | 2 +- gemfeed/2021-10-22-defensive-devops.html | 2 +- gemfeed/2021-11-29-bash-golf-part-1.html | 2 +- ...-12-26-how-to-stay-sane-as-a-devops-person.html | 2 +- gemfeed/2022-01-01-bash-golf-part-2.html | 2 +- gemfeed/2022-01-23-welcome-to-the-foo.zone.html | 2 +- ...022-02-04-computer-operating-systems-i-use.html | 2 +- gemfeed/2022-03-06-the-release-of-dtail-4.0.0.html | 2 +- gemfeed/2022-04-10-creative-universe.html | 2 +- .../2022-05-27-perl-is-still-a-great-choice.html | 2 +- gemfeed/2022-06-15-sweating-the-small-stuff.html | 2 +- ...22-07-30-lets-encrypt-with-openbsd-and-rex.html | 2 +- ...2-08-27-gemtexter-1.1.0-lets-gemtext-again.html | 2 +- gemfeed/2022-09-30-after-a-bad-nights-sleep.html | 2 +- .../2022-10-30-installing-dtail-on-openbsd.html | 2 +- ...-tried-emacs-but-i-switched-back-to-neovim.html | 2 +- ...22-12-24-ultrarelearning-java-my-takeaways.html | 2 +- gemfeed/2023-01-23-why-grapheneos-rox.html | 2 +- .../2023-02-26-how-to-shut-down-after-work.html | 2 +- ...-03-16-the-pragmatic-programmer-book-notes.html | 2 +- ...03-25-gemtexter-2.0.0-lets-gemtext-again-2.html | 2 +- ...4-01-never-split-the-difference-book-notes.html | 2 +- ...ithms-and-data-structures-in-golang-part-1.html | 2 +- ...3-05-06-the-obstacle-is-the-way-book-notes.html | 2 +- ...3-06-01-kiss-server-monitoring-with-gogios.html | 2 +- ...17-career-guide-and-soft-skills-book-notes.html | 2 +- ...07-21-gemtexter-2.1.0-lets-gemtext-again-3.html | 2 +- ...-08-18-site-reliability-engineering-part-1.html | 2 +- ...-08-19-site-reliability-engineering-part-2.html | 2 +- ...-08-20-site-reliability-engineering-part-3.html | 2 +- gemfeed/2023-09-25-dtail-usage-examples.html | 2 +- gemfeed/DRAFT-dtail-usage-examples.html | 286 --------------------- gemfeed/DRAFT-site-reliability-engineering.html | 2 +- gemfeed/W | 228 ---------------- gemfeed/atom.xml | 86 +++---- index.html | 2 +- notes/career-guide-and-soft-skills.html | 2 +- notes/never-split-the-difference.html | 2 +- notes/the-obstacle-is-the-way.html | 2 +- notes/the-pragmatic-programmer.html | 2 +- uptime-stats.html | 2 +- 61 files changed, 102 insertions(+), 616 deletions(-) delete mode 100644 gemfeed/DRAFT-dtail-usage-examples.html delete mode 100644 gemfeed/W diff --git a/gemfeed/2008-06-26-perl-poetry.html b/gemfeed/2008-06-26-perl-poetry.html index 74c9f10d..fd8f4af1 100644 --- a/gemfeed/2008-06-26-perl-poetry.html +++ b/gemfeed/2008-06-26-perl-poetry.html @@ -186,7 +186,7 @@ This is perl, v5.2011-05-07 Perl Daemon (Service Framework)
2022-05-27 Perl is still a great choice

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diff --git a/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.html b/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.html index fa434fbb..2e586e6b 100644 --- a/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.html +++ b/gemfeed/2008-12-29-using-my-nokia-n95-for-fixing-my-mta.html @@ -46,7 +46,7 @@ _jgs_\|//_\\|///_\V/_\|//__
At the moment I am in Sofia, Bulgaria. Here I can use at least an unprotected WLAN hotspot which belongs to one of the neighbours which I don’t know in person, and it is not blocking any port at all :)

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diff --git a/gemfeed/2010-04-09-standard-ml-and-haskell.html b/gemfeed/2010-04-09-standard-ml-and-haskell.html index 8d80016a..b7272b73 100644 --- a/gemfeed/2010-04-09-standard-ml-and-haskell.html +++ b/gemfeed/2010-04-09-standard-ml-and-haskell.html @@ -209,7 +209,7 @@ fun my_filter f l = foldr (make_filter_fn f) [] l my_filter f l = foldr (make_filter_fn f) [] l
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diff --git a/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.html b/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.html index 751d65ba..534aa6d7 100644 --- a/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.html +++ b/gemfeed/2010-05-07-lazy-evaluation-with-standarn-ml.html @@ -106,7 +106,7 @@ first 10 nat_pairs_not_null
http://www.haskell.org/

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diff --git a/gemfeed/2010-05-09-the-fype-programming-language.html b/gemfeed/2010-05-09-the-fype-programming-language.html index d1af6fb1..d71fcfe1 100644 --- a/gemfeed/2010-05-09-the-fype-programming-language.html +++ b/gemfeed/2010-05-09-the-fype-programming-language.html @@ -522,7 +522,7 @@ BB
https://codeberg.org/snonux/fype

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diff --git a/gemfeed/2011-05-07-perl-daemon-service-framework.html b/gemfeed/2011-05-07-perl-daemon-service-framework.html index 998fe201..26865c9b 100644 --- a/gemfeed/2011-05-07-perl-daemon-service-framework.html +++ b/gemfeed/2011-05-07-perl-daemon-service-framework.html @@ -193,7 +193,7 @@ http://www.gnu.org/software/src-highlite --> 2011-05-07 Perl Daemon (Service Framework) (You are currently reading this)
2022-05-27 Perl is still a great choice

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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 b1ed8b67..993925f3 100644 --- a/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.html +++ b/gemfeed/2014-03-24-the-fibonacci.pl.c-polyglot.html @@ -157,7 +157,7 @@ fib(10 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 51215a55..06f011ea 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 @@ -203,7 +203,7 @@ chmod +x /data/local/userinit
Reboot & test! Enjoy!

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diff --git a/gemfeed/2016-04-03-offsite-backup-with-zfs.html b/gemfeed/2016-04-03-offsite-backup-with-zfs.html index ce05cdeb..5c5bac1e 100644 --- a/gemfeed/2016-04-03-offsite-backup-with-zfs.html +++ b/gemfeed/2016-04-03-offsite-backup-with-zfs.html @@ -50,7 +50,7 @@
I am thinking of buying a second 2TB USB drive and setting it up the same way as the first one. So I could alternate the backups. One drive would be at the secret location, and the other drive would be at home. And these drives would swap place after each cycle. This would give some security about the failure of that drive, and I would have to go to the secret location only once (swapping the drives) instead of twice (picking that drive up to update the data + bringing it back to the remote location).

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diff --git a/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.html b/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.html index 6a85cc87..8d983cba 100644 --- a/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.html +++ b/gemfeed/2016-04-09-jails-and-zfs-on-freebsd-with-puppet.html @@ -397,7 +397,7 @@ Notice: Finished catalog run in 206.09 seconds
All done in a pretty automated manor.

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diff --git a/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.html b/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.html index 930d7bf7..04225f5e 100644 --- a/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.html +++ b/gemfeed/2016-04-16-offsite-backup-with-zfs-part2.html @@ -36,7 +36,7 @@
Furthermore, I added scrubbing ("zpool scrub...") to the script. It ensures that the file system is consistent and that there are no bad blocks on the disk and the file system. To increase the reliability, I also run a "zfs set copies=2 zroot". That setting is also synchronized to the offsite ZFS pool. ZFS stores every data block to disk twice now. Yes, it consumes twice as much disk space, making it better fault-tolerant against hardware errors (e.g. only individual disk sectors going bad).

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diff --git a/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.html b/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.html index f7780a2b..b26f78f8 100644 --- a/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.html +++ b/gemfeed/2016-05-22-spinning-up-my-own-authoritative-dns-servers.html @@ -245,7 +245,7 @@ apply Service "dig6" {
That's much more comfortable now than manually clicking at some web UIs at Schlund Technologies.

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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 f20775fc..ccfbeafe 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 @@ -123,7 +123,7 @@ http://www.gnu.org/software/src-highlite -->
C is a very old programming language with it's quirks. This might be one of the reasons why Linux will also let Rust code in.

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diff --git a/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html b/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html index e1483f34..45761407 100644 --- a/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html +++ b/gemfeed/2018-06-01-realistic-load-testing-with-ioriot-for-linux.html @@ -196,7 +196,7 @@ Total time: 1213.00s Graphite
Memory mapped I/O

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diff --git a/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.html b/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.html index fb908bc7..1641ae47 100644 --- a/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.html +++ b/gemfeed/2021-04-22-dtail-the-distributed-log-tail-program.html @@ -123,7 +123,7 @@ dtail –servers serverlist.txt –files ‘/var/log/*.log’ –regex ‘(?i:er 2022-10-30 Installing DTail on OpenBSD
2023-09-25 DTail usage examples

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diff --git a/gemfeed/2021-04-24-welcome-to-the-geminispace.html b/gemfeed/2021-04-24-welcome-to-the-geminispace.html index 2784f207..6af17e54 100644 --- a/gemfeed/2021-04-24-welcome-to-the-geminispace.html +++ b/gemfeed/2021-04-24-welcome-to-the-geminispace.html @@ -96,7 +96,7 @@ 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

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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 b7ba1520..72c24941 100644 --- a/gemfeed/2021-05-16-personal-bash-coding-style-guide.html +++ b/gemfeed/2021-05-16-personal-bash-coding-style-guide.html @@ -397,7 +397,7 @@ fi 2021-11-29 Bash Golf Part 1
2022-01-01 Bash Golf Part 2

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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 f8092bca..62bfcceb 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 @@ -195,7 +195,7 @@ assert::equals "$(generate::m 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

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diff --git a/gemfeed/2021-07-04-the-well-grounded-rubyist.html b/gemfeed/2021-07-04-the-well-grounded-rubyist.html index defe4624..745e8d18 100644 --- a/gemfeed/2021-07-04-the-well-grounded-rubyist.html +++ b/gemfeed/2021-07-04-the-well-grounded-rubyist.html @@ -113,7 +113,7 @@ Hello World
Will I abandon my beloved Perl? Probably not. There are also some Perl scripts I use at work. But unfortunately I only have a limited amount of time and I have to use it wisely. I might look into Raku (formerly known as Perl 6) next year and use it for a personal pet project, who knows. :-). I also highly recommend reading the two Perl books "Modern Perl" and "Higher-Order Perl".

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diff --git a/gemfeed/2021-08-01-on-being-pedantic-about-open-source.html b/gemfeed/2021-08-01-on-being-pedantic-about-open-source.html index 5a5d3fde..5ebfd451 100644 --- a/gemfeed/2021-08-01-on-being-pedantic-about-open-source.html +++ b/gemfeed/2021-08-01-on-being-pedantic-about-open-source.html @@ -68,7 +68,7 @@
Do you need Microsoft Word? Why don't you just use the Vim text editor or GNU Emacs to write your letters? If that's too nerdy, you can still use open-source alternatives such as AbiWord or LibreOffice. Larger organizations have the tendency to standardize the software their employees have to use. Unfortunately, as Microsoft Word is the de-facto standard text processing program, most companies prefer Word over LibreOffice. Same with Microsoft Excel vs LibreOffice Calc or other spreadsheet alternatives like Gnumeric. I don't know why that is; please....

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I only use free and open-source operating systems on my personal Laptops, Desktop PCs and servers (FreeBSD and Linux based ones). Most of the programs and apps I use on them are free and open-source as well, and I am comfortable with it for over twenty years. Exceptions are the BIOSes and some firmwares of my devices. I also use Skype as most of my friends and family are using it. They are, unfortunately, proprietary software still. But I will be looking into Matrix as a Skype alternative when I have time. There are also open BIOS alternatives, but they usually don't work on my devices.

@@ -125,7 +125,7 @@
You have better chances when you know how to manage your own server and install and manage alternatives to the big cloud providers by yourself. I have the advantage that I have work experience as a Linux Systems Administrator here. I mentioned NextCloud already. I use NextCloud for online photo and file storage, contact and calendar sync and as an RSS news feed server. You could do the same with your own E-Mail server, you can also host your own website and blog. I also mentioned Matrix as a Skype alternative (which could also be an alternative to WhatsApp, Skype, Telegram, Viber, ...). I don't know a lot about Matrix yet, but it seems to be a very neat alternative. I am ready to invest time in it as one of my future personal pet projects. Not only because I think it's better, but also because for fun and as a hobby. But this doesn't mean that I invest *all* of my personal free time in it.

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diff --git a/gemfeed/2021-09-12-keep-it-simple-and-stupid.html b/gemfeed/2021-09-12-keep-it-simple-and-stupid.html index c10555ed..51006a8b 100644 --- a/gemfeed/2021-09-12-keep-it-simple-and-stupid.html +++ b/gemfeed/2021-09-12-keep-it-simple-and-stupid.html @@ -104,7 +104,7 @@
Enough ranted for now!

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Controversially, a lack of features is a feature. Enjoy your peace an quiet. - Michael W Lucas

diff --git a/gemfeed/2021-10-22-defensive-devops.html b/gemfeed/2021-10-22-defensive-devops.html index f9e70a4a..edf1e540 100644 --- a/gemfeed/2021-10-22-defensive-devops.html +++ b/gemfeed/2021-10-22-defensive-devops.html @@ -111,7 +111,7 @@
This usually means creating one or more tickets, which will be dealt with soon. Once the permanent fix is deployed, you can remove your ad-hoc automation and monitoring around it and focus on your regular work again.

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diff --git a/gemfeed/2021-11-29-bash-golf-part-1.html b/gemfeed/2021-11-29-bash-golf-part-1.html index 79940ae0..4bccd556 100644 --- a/gemfeed/2021-11-29-bash-golf-part-1.html +++ b/gemfeed/2021-11-29-bash-golf-part-1.html @@ -480,7 +480,7 @@ bash: line 1: 1/10.0 : syntax error: invalid arithmetic operator (error token is 2021-11-29 Bash Golf Part 1 (You are currently reading this)
2022-01-01 Bash Golf Part 2

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diff --git a/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.html b/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.html index d4a9ad37..28eb7eda 100644 --- a/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.html +++ b/gemfeed/2021-12-26-how-to-stay-sane-as-a-devops-person.html @@ -134,7 +134,7 @@
https://unixsheikh.com/articles/how-to-stay-sane-in-todays-world-of-tech.html

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diff --git a/gemfeed/2022-01-01-bash-golf-part-2.html b/gemfeed/2022-01-01-bash-golf-part-2.html index 82ec0844..4106611c 100644 --- a/gemfeed/2022-01-01-bash-golf-part-2.html +++ b/gemfeed/2022-01-01-bash-golf-part-2.html @@ -498,7 +498,7 @@ PAUL:X:1000:1000:PAUL BUETOW:/HOME/PAUL:/BIN/BASH 2021-11-29 Bash Golf Part 1
2022-01-01 Bash Golf Part 2 (You are currently reading this)

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diff --git a/gemfeed/2022-01-23-welcome-to-the-foo.zone.html b/gemfeed/2022-01-23-welcome-to-the-foo.zone.html index baffeb05..68fc4bef 100644 --- a/gemfeed/2022-01-23-welcome-to-the-foo.zone.html +++ b/gemfeed/2022-01-23-welcome-to-the-foo.zone.html @@ -55,7 +55,7 @@
The host buetow.org will stay. However, not as the primary address for this site. I will keep using it for my personal internet infrastructure as well as for most of my E-Mail addresses. I used buetow.org for that over the past 10 years already anyway and that won't change any time soon. I don't know what I am going to do with snonux.de in the long run. A .de SLD (for Germany) is pretty cheap, so I might just keep it for now.

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diff --git a/gemfeed/2022-02-04-computer-operating-systems-i-use.html b/gemfeed/2022-02-04-computer-operating-systems-i-use.html index b5f85c69..43ca9acf 100644 --- a/gemfeed/2022-02-04-computer-operating-systems-i-use.html +++ b/gemfeed/2022-02-04-computer-operating-systems-i-use.html @@ -237,7 +237,7 @@ GNU/kFreeBSD rhea.buetow.org 8.0-RELEASE-p5 FreeBSD 8.0-RELEASE-p5 #2: Sat Nov 2 DragonFly BSD - Fork of FreeBSD 4
Phosh (on postmarketOS) - A true Linux shell for the smartphone

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diff --git a/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.html b/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.html index 1bd8bf8a..d90636b2 100644 --- a/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.html +++ b/gemfeed/2022-03-06-the-release-of-dtail-4.0.0.html @@ -311,7 +311,7 @@ exec /usr/local/bin/dtailhealth --server localhost:2222
Paul

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+E-Mail your comments to paul@nospam.buetow.org :-)

Back to the main site

diff --git a/gemfeed/2022-04-10-creative-universe.html b/gemfeed/2022-04-10-creative-universe.html index e8d0d600..c0b51e09 100644 --- a/gemfeed/2022-04-10-creative-universe.html +++ b/gemfeed/2022-04-10-creative-universe.html @@ -149,7 +149,7 @@ learn () {

  • The Off Switch; Mark Cropley; Virgin Books
  • Ultralearning; Scott Young; Thorsons

    • -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2022-05-27-perl-is-still-a-great-choice.html b/gemfeed/2022-05-27-perl-is-still-a-great-choice.html index cf2970d6..803a3d7d 100644 --- a/gemfeed/2022-05-27-perl-is-still-a-great-choice.html +++ b/gemfeed/2022-05-27-perl-is-still-a-great-choice.html @@ -156,7 +156,7 @@ 2022-05-27 Perl is still a great choice (You are currently reading this)
    2023-05-01 Unveiling guprecords.raku: Global Uptime Records with Raku

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2022-06-15-sweating-the-small-stuff.html b/gemfeed/2022-06-15-sweating-the-small-stuff.html index 081ee048..5efa9408 100644 --- a/gemfeed/2022-06-15-sweating-the-small-stuff.html +++ b/gemfeed/2022-06-15-sweating-the-small-stuff.html @@ -334,7 +334,7 @@ v = 008 [v = p*c*(s != c ? 2 : 1)] Total logical CPUs
    Welcome to the Geminispae

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2022-07-30-lets-encrypt-with-openbsd-and-rex.html b/gemfeed/2022-07-30-lets-encrypt-with-openbsd-and-rex.html index cd3d32c1..fba01a4c 100644 --- a/gemfeed/2022-07-30-lets-encrypt-with-openbsd-and-rex.html +++ b/gemfeed/2022-07-30-lets-encrypt-with-openbsd-and-rex.html @@ -668,7 +668,7 @@ rex commons
    Why re-inventing the wheel? I love that a Rexfile is just a Perl DSL. Also, OpenBSD comes with Perl in the base system. So no new programming language had to be added to my mix for the configuration management system. Also, the acme.sh shell script is not a Bash but a standard Bourne shell script, so I didn't have to install an additional shell as OpenBSD does not come with the Bash pre-installed.

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    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 bb0ca8c7..1c210bfb 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 @@ -109,7 +109,7 @@ http://www.gnu.org/software/src-highlite --> 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2022-09-30-after-a-bad-nights-sleep.html b/gemfeed/2022-09-30-after-a-bad-nights-sleep.html index 595a5d1a..f552a6f2 100644 --- a/gemfeed/2022-09-30-after-a-bad-nights-sleep.html +++ b/gemfeed/2022-09-30-after-a-bad-nights-sleep.html @@ -104,7 +104,7 @@ jgs (________\ \
    I wouldn't say I like checking social media, as it can consume a lot of time and can become addictive. But once in a while, I want to catch up with my "networks". After a bad night's sleep, it's the perfect time to check your social media. Once done, you don't have to do it anymore for the next couple of days!

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2022-10-30-installing-dtail-on-openbsd.html b/gemfeed/2022-10-30-installing-dtail-on-openbsd.html index f12c76d7..0f103cc4 100644 --- a/gemfeed/2022-10-30-installing-dtail-on-openbsd.html +++ b/gemfeed/2022-10-30-installing-dtail-on-openbsd.html @@ -356,7 +356,7 @@ REMOTE|fishfinger|100|7|fstab|093f510ec5c0f512.h /usr/local ffs rw,wxallowed,nod 2022-10-30 Installing DTail on OpenBSD (You are currently reading this)
    2023-09-25 DTail usage examples

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    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 1e2bba0e..d1759547 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 @@ -123,7 +123,7 @@ nmap ,i !wpbpaste<C
    https://github.com/NvChad/NvChad

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2022-12-24-ultrarelearning-java-my-takeaways.html b/gemfeed/2022-12-24-ultrarelearning-java-my-takeaways.html index 52abf94b..e3bc3908 100644 --- a/gemfeed/2022-12-24-ultrarelearning-java-my-takeaways.html +++ b/gemfeed/2022-12-24-ultrarelearning-java-my-takeaways.html @@ -114,7 +114,7 @@
    Am I a Java expert now? No, by far not. But I am better now than before :-).

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2023-01-23-why-grapheneos-rox.html b/gemfeed/2023-01-23-why-grapheneos-rox.html index 5f7b4a3a..55ad0068 100644 --- a/gemfeed/2023-01-23-why-grapheneos-rox.html +++ b/gemfeed/2023-01-23-why-grapheneos-rox.html @@ -147,7 +147,7 @@ Art by Joan Stark
    And, of course, GrapheneOS is an open-source project. This is a good thing; however, on the other side, nobody can guarantee that the OS will not break or will not damage your phone. You have to trust the GrapheneOS project and donate to the project so they can keep up with the great work. But I rather trust the GrapheneOS team than big tech.

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    diff --git a/gemfeed/2023-02-26-how-to-shut-down-after-work.html b/gemfeed/2023-02-26-how-to-shut-down-after-work.html index 0be455bb..a696e0f2 100644 --- a/gemfeed/2023-02-26-how-to-shut-down-after-work.html +++ b/gemfeed/2023-02-26-how-to-shut-down-after-work.html @@ -84,7 +84,7 @@
    There are some days at work you feel drained afterwards and think you didn't progress towards your goals at all. It's more challenging to shut down from work after such a day. A quick hack is to work on a quick win before the end of the day, giving you a sense of accomplishment after all. Another way is to make progress on your fun passion project after work. It must not be work-related, but a sense of accomplishment will still be there.

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    diff --git a/gemfeed/2023-03-16-the-pragmatic-programmer-book-notes.html b/gemfeed/2023-03-16-the-pragmatic-programmer-book-notes.html index edbe68af..850942e9 100644 --- a/gemfeed/2023-03-16-the-pragmatic-programmer-book-notes.html +++ b/gemfeed/2023-03-16-the-pragmatic-programmer-book-notes.html @@ -98,7 +98,7 @@ 2023-05-06 "The Obstacle is the Way" book notes
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    More books and other resources I found useful.
    Back to the main site
    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 dc8d2ee8..c789d771 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 @@ -163,7 +163,7 @@ The remaining content of the Gemtext file... 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again² (You are currently reading this)
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

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    diff --git a/gemfeed/2023-04-01-never-split-the-difference-book-notes.html b/gemfeed/2023-04-01-never-split-the-difference-book-notes.html index 9f0d1fa5..da459d92 100644 --- a/gemfeed/2023-04-01-never-split-the-difference-book-notes.html +++ b/gemfeed/2023-04-01-never-split-the-difference-book-notes.html @@ -145,7 +145,7 @@ 2023-05-06 "The Obstacle is the Way" book notes
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

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    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 1538ac8b..1d6e9981 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 @@ -263,7 +263,7 @@ ok codeberg.org/snonux/algorithms/sort I won't write any benchmark for sleep sort; that will be done for the algorithms to come in this series :-).

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2023-05-06-the-obstacle-is-the-way-book-notes.html b/gemfeed/2023-05-06-the-obstacle-is-the-way-book-notes.html index a7f3fa22..cfe010d4 100644 --- a/gemfeed/2023-05-06-the-obstacle-is-the-way-book-notes.html +++ b/gemfeed/2023-05-06-the-obstacle-is-the-way-book-notes.html @@ -99,7 +99,7 @@ 2023-05-06 "The Obstacle is the Way" book notes (You are currently reading this)
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    More books and other resources I found useful.
    Back to the main site
    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 d6630ed9..43ca14c9 100644 --- a/gemfeed/2023-06-01-kiss-server-monitoring-with-gogios.html +++ b/gemfeed/2023-06-01-kiss-server-monitoring-with-gogios.html @@ -267,7 +267,7 @@ http://www.gnu.org/software/src-highlite -->
    Gogios is a lightweight and straightforward monitoring tool that is perfect for small-scale environments. With its compatibility with the Nagios Check API, email notifications, and CRON-based scheduling, Gogios offers an easy-to-use solution for those looking to monitor a limited number of resources. I personally use it to execute around 500 checks on my personal server infrastructure. I am very happy with this solution.

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    diff --git a/gemfeed/2023-07-17-career-guide-and-soft-skills-book-notes.html b/gemfeed/2023-07-17-career-guide-and-soft-skills-book-notes.html index f815aed5..0d026d72 100644 --- a/gemfeed/2023-07-17-career-guide-and-soft-skills-book-notes.html +++ b/gemfeed/2023-07-17-career-guide-and-soft-skills-book-notes.html @@ -313,7 +313,7 @@ 2023-05-06 "The Obstacle is the Way" book notes
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes (You are currently reading this)

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    More books and other resources I found useful.
    Back to the main site
    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 9c152a0d..4a9efe70 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 @@ -118,7 +118,7 @@ http://www.gnu.org/software/src-highlite --> 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³ (You are currently reading this)

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    diff --git a/gemfeed/2023-08-18-site-reliability-engineering-part-1.html b/gemfeed/2023-08-18-site-reliability-engineering-part-1.html index 724d118e..940c453d 100644 --- a/gemfeed/2023-08-18-site-reliability-engineering-part-1.html +++ b/gemfeed/2023-08-18-site-reliability-engineering-part-1.html @@ -64,7 +64,7 @@ DC on fire:
    2023-08-19 Site Reliability Engineering - Part 2: Operational Balance in SRE

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    diff --git a/gemfeed/2023-08-19-site-reliability-engineering-part-2.html b/gemfeed/2023-08-19-site-reliability-engineering-part-2.html index af33ea1a..f1ad2b23 100644 --- a/gemfeed/2023-08-19-site-reliability-engineering-part-2.html +++ b/gemfeed/2023-08-19-site-reliability-engineering-part-2.html @@ -55,7 +55,7 @@
    2023-08-20 Site Reliability Engineering - Part 3: On-Call Culture and the Human Aspect

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    diff --git a/gemfeed/2023-08-20-site-reliability-engineering-part-3.html b/gemfeed/2023-08-20-site-reliability-engineering-part-3.html index 978fca00..31bd5d0e 100644 --- a/gemfeed/2023-08-20-site-reliability-engineering-part-3.html +++ b/gemfeed/2023-08-20-site-reliability-engineering-part-3.html @@ -64,7 +64,7 @@
    The fourth part of this blog series will be published soon :-)

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    diff --git a/gemfeed/2023-09-25-dtail-usage-examples.html b/gemfeed/2023-09-25-dtail-usage-examples.html index cf12b26b..220ee174 100644 --- a/gemfeed/2023-09-25-dtail-usage-examples.html +++ b/gemfeed/2023-09-25-dtail-usage-examples.html @@ -310,7 +310,7 @@ http://www.gnu.org/software/src-highlite -->
    Paul

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    diff --git a/gemfeed/DRAFT-dtail-usage-examples.html b/gemfeed/DRAFT-dtail-usage-examples.html deleted file mode 100644 index f82a37a1..00000000 --- a/gemfeed/DRAFT-dtail-usage-examples.html +++ /dev/null @@ -1,286 +0,0 @@ - - - - -DTail usage examples - - - - - -

    DTail usage examples


    -
    -DTail is a distributed DevOps tool for tailing, grepping, catting logs and other text files on many remote machines at once which I programmed in Go.
    -
    -https://dtail.dev
    -
    -
    -                              ,_---~~~~~----._
-                        _,,_,*^____      _____``*g*\"*,
-  ____ _____     _ _   / __/ /'     ^.  /      \ ^@q   f
- |  _ \_   _|_ _(_) |   @f |      ((@|  |@))    l  0 _/
- | | | || |/ _` | | |  \`/   \~____ / __ \_____/    \
- | |_| || | (_| | | |   |           _l__l_           I
- |____/ |_|\__,_|_|_|   }          [______]           I
-                        ]            | | |            |
-                        ]             ~ ~             |
-                        |   Let's tail those logs!   |
-                         |                           |
-
    -
    -DTail consists out of a server and several client binaries. In this post, I am showcasing their use!
    -
    -

    Following logs


    -
    -The following example demonstrates how to follow logs of several servers at once. The server list is provided as a flat text file. The example filters all records containing the string INFO. Any other Go compatible regular expression can also be used instead of INFO.
    -
    - -
    % dtail --servers serverlist.txt --grep INFO --files "/var/log/dserver/*.log"
-
    -
    -Hint: you can also provide a comma separated server list, e.g.: servers server1.example.org,server2.example.org:PORT,...
    -
    -Tail example
    -
    -Hint: You can also use the shorthand version (omitting the --files)
    -
    - -
    % dtail --servers serverlist.txt --grep INFO "/var/log/dserver/*.log"
-
    -
    -

    Aggregating logs


    -
    -To run ad-hoc map-reduce aggregations on newly written log lines you must add a query. The following example follows all remote log lines and prints out every few seconds the result to standard output.
    -
    -Hint: To run a map-reduce query across log lines written in the past, please use the dmap command instead.
    -
    - -
    % dtail --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    --query 'from STATS select sum($goroutines),sum($cgocalls),
-             last($time),max(lifetimeConnections)'
-
    -
    -Beware: For map-reduce queries to work, you have to ensure that DTail supports your log format. Check out the documentaiton of the DTail query language and the DTail log formats on the DTail homepage for more information.
    -
    -Tail map-reduce example
    -
    -Hint: You can also use the shorthand version:
    -
    - -
    % dtail --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    'from STATS select sum($goroutines),sum($cgocalls),
-     last($time),max(lifetimeConnections)'
-
    -
    -Here is another example:
    -
    - -
    % dtail --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    --query 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,
-             lifetimeConnections group by $hostname order by max($cgocalls)'
-
    -
    -Tail map-reduce example 2
    -
    -You can also continuously append the results to a CSV file by adding outfile append filename.csv to the query:
    -
    - -
    % dtail --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    --query 'from STATS select ... outfile append result.csv'
-
    -
    -

    How to use dcat


    -
    -The following example demonstrates how to cat files (display the full content of the files) on several servers at once.
    -
    -As you can see in this example, a DTail client also creates a local log file of all received data in ~/log. You can also use the noColor and -plain flags (this all also work with other DTail commands than dcat).
    -
    - -
    % dcat --servers serverlist.txt --files /etc/hostname
-
    -
    -Cat example
    -
    -Hint: You can also use the shorthand version:
    -
    - -
    % dcat --servers serverlist.txt /etc/hostname
-
    -
    -

    How to use dgrep


    -
    -The following example demonstrates how to grep files (display only the lines which match a given regular expression) of multiple servers at once. In this example, we look after some entries in /etc/passwd. This time, we don't provide the server list via an file but rather via a comma separated list directly on the command line. We also explore the -before, -after and -max flags (see animation).
    -
    - -
    % dgrep --servers server1.example.org:2223 \
-    --files /etc/passwd \
-    --regex nologin
-
    -
    -Generally, dgrep is also a very useful way to search historic application logs for certain content.
    -
    -Grep example
    -
    -Hint: -regex is an alias for -grep.
    -
    -

    How to use dmap


    -
    -To run a map-reduce aggregation over logs written in the past, the dmap command can be used. The following example aggregates all map-reduce fields dmap will print interim results every few seconds. You can also write the result to an CSV file by adding outfile result.csv to the query.
    -
    - -
    % dmap --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    --query 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,
-             lifetimeConnections group by $hostname order by max($cgocalls)'
-
    -
    -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 internal/mapr/logformat 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.
    -
    -DMap example
    -
    -

    How to use the DTail serverless mode


    -
    -Until now, all examples so far required to have remote server(s) to connect to. That makes sense, as after all DTail is a *distributed* tool. However, there are circumstances where you don't really need to connect to a server remotely. For example, you already have a login shell open to the server an all what you want is to run some queries directly on local log files.
    -
    -The serverless mode does not require any dserver up and running and therefore there is no networking/SSH involved.
    -
    -All commands shown so far also work in a serverless mode. All what needs to be done is to omit a server list. The DTail client then starts in serverless mode.
    -
    -

    Serverless map-reduce query


    -
    -The following dmap example is the same as the previously shown one, but the difference is that it operates on a local log file directly:
    -
    - -
    % dmap --files /var/log/dserver/dserver.log
-    --query 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,
-              lifetimeConnections group by $hostname order by max($cgocalls)'
-
    -
    -As a shorthand version the following command can be used:
    -
    - -
    % dmap 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,
-lifetimeConnections group by $hostname order by max($cgocalls)' /var/log/dsever/dserver.log
-
    -
    -You can also use a file input pipe as follows:
    -
    - -
    % cat /var/log/dserver/dserver.log | \
-    dmap 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,
-          lifetimeConnections group by $hostname order by max($cgocalls)'
-
    -
    -

    Aggregating CSV files


    -
    -In essence, this works exactly like aggregating logs. All files operated on must be valid CSV files and the first line of the CSV must be the header. E.g.:
    -
    - -
    % cat example.csv
-name,lastname,age,profession
-Michael,Jordan,40,Basketball player
-Michael,Jackson,100,Singer
-Albert,Einstein,200,Physician
-% dmap --query 'select lastname,name where age > 40 logformat csv outfile result.csv' example.csv
-% cat result.csv
-lastname,name
-Jackson,Michael
-Einstein,Albert
-
    -
    -DMap can also be used to query and aggregate CSV files from remote servers.
    -
    -

    Other serverless commands


    -
    -The serverless mode works transparently with all other DTail commands. Here are some examples:
    -
    - -
    % dtail /var/log/dserver/dserver.log
-
    -
    - -
    % dtail --logLevel trace /var/log/dserver/dserver.log
-
    -
    - -
    % dcat /etc/passwd
-
    -
    - -
    % dcat --plain /etc/passwd > /etc/test
-# Should show no differences.
-diff /etc/test /etc/passwd 
-
    -
    - -
    % dgrep --regex ERROR --files /var/log/dserver/dsever.log
-
    -
    -

    -Generated by Gemtexter 2.1.0-release | -served by OpenBSD/httpd(8) | -Site Mirrors -

    - - diff --git a/gemfeed/DRAFT-site-reliability-engineering.html b/gemfeed/DRAFT-site-reliability-engineering.html index 255d4c83..fc38aa15 100644 --- a/gemfeed/DRAFT-site-reliability-engineering.html +++ b/gemfeed/DRAFT-site-reliability-engineering.html @@ -158,7 +158,7 @@
  • Site Reliability Engineering: How Google runs Production Systems by by Jennifer Petoff, Niall Murphy, Betsy Beyer and Chris Jones
  • Implementing Service Level Objectives by Alex Hidalgo

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    Back to the main site

    diff --git a/gemfeed/W b/gemfeed/W deleted file mode 100644 index 7b753922..00000000 --- a/gemfeed/W +++ /dev/null @@ -1,228 +0,0 @@ -# DTail usage examples - -DTail is a distributed DevOps tool for tailing, grepping, catting logs and other text files on many remote machines at once which I programmed in Go. - -=> https://dtail.dev - -``` - ,_---~~~~~----._ - _,,_,*^____ _____``*g*\"*, - ____ _____ _ _ / __/ /' ^. / \ ^@q f - | _ \_ _|_ _(_) | @f | ((@| |@)) l 0 _/ - | | | || |/ _` | | | \`/ \~____ / __ \_____/ \ - | |_| || | (_| | | | | _l__l_ I - |____/ |_|\__,_|_|_| } [______] I - ] | | | | - ] ~ ~ | - | Let's tail those logs! | - | | -``` - -DTail consists out of a server and several client binaries. In this post, I am showcasing their use! - -## Following logs - -The following example demonstrates how to follow logs of several servers at once. The server list is provided as a flat text file. The example filters all records containing the string `INFO`. Any other Go compatible regular expression can also be used instead of `INFO`. - -```shell -% dtail --servers serverlist.txt --grep INFO --files "/var/log/dserver/*.log" -``` - -Hint: you can also provide a comma separated server list, e.g.: `servers server1.example.org,server2.example.org:PORT,...` - -=> ./dtail-usage-examples/dtail.gif Tail example - -> Hint: You can also use the shorthand version (omitting the `--files`) - -```shell -% dtail --servers serverlist.txt --grep INFO "/var/log/dserver/*.log" -``` - -## Aggregating logs - -To run ad-hoc map-reduce aggregations on newly written log lines you must add a query. The following example follows all remote log lines and prints out every few seconds the result to standard output. - -> Hint: To run a map-reduce query across log lines written in the past, please use the `dmap` command instead. - -```shell -% dtail --servers serverlist.txt \ - --files '/var/log/dserver/*.log' \ - --query 'from STATS select sum($goroutines),sum($cgocalls), - last($time),max(lifetimeConnections)' -``` - -Beware: For map-reduce queries to work, you have to ensure that DTail supports your log format. Check out the documentaiton of the DTail query language and the DTail log formats on the DTail homepage for more information. - -=> ./dtail-usage-examples/dtail-map.gif Tail map-reduce example - -> Hint: You can also use the shorthand version: - -```shell -% dtail --servers serverlist.txt \ - --files '/var/log/dserver/*.log' \ - 'from STATS select sum($goroutines),sum($cgocalls), - last($time),max(lifetimeConnections)' -``` - -Here is another example: - -```shell -% dtail --servers serverlist.txt \ - --files '/var/log/dserver/*.log' \ - --query 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg, - lifetimeConnections group by $hostname order by max($cgocalls)' -``` - -=> ./dtail-usage-examples/dtail-map2.gif Tail map-reduce example 2 - -You can also continuously append the results to a CSV file by adding `outfile append filename.csv` to the query: - -```shell -% dtail --servers serverlist.txt \ - --files '/var/log/dserver/*.log' \ - --query 'from STATS select ... outfile append result.csv' -``` - -## How to use `dcat` - -The following example demonstrates how to cat files (display the full content of the files) on several servers at once. - -As you can see in this example, a DTail client also creates a local log file of all received data in `~/log`. You can also use the `noColor` and `-plain` flags (this all also work with other DTail commands than `dcat`). - -```shell -% dcat --servers serverlist.txt --files /etc/hostname -``` - -=> ./dtail-usage-examples/dcat.gif Cat example - -> Hint: You can also use the shorthand version: - -```shell -% dcat --servers serverlist.txt /etc/hostname -``` - -## How to use `dgrep` - -The following example demonstrates how to grep files (display only the lines which match a given regular expression) of multiple servers at once. In this example, we look after some entries in `/etc/passwd`. This time, we don't provide the server list via an file but rather via a comma separated list directly on the command line. We also explore the `-before`, `-after` and `-max` flags (see animation). - -```shell -% dgrep --servers server1.example.org:2223 \ - --files /etc/passwd \ - --regex nologin -``` - -Generally, `dgrep` is also a very useful way to search historic application logs for certain content. - -=> ./dtail-usage-examples/dgrep.gif Grep example - -Hint: `-regex` is an alias for `-grep`. - -## How to use `dmap` - -To run a map-reduce aggregation over logs written in the past, the `dmap` command can be used. The following example aggregates all map-reduce fields `dmap` will print interim results every few seconds. You can also write the result to an CSV file by adding `outfile result.csv` to the query. - -```shell -% dmap --servers serverlist.txt \ - --files '/var/log/dserver/*.log' \ - --query 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg, - lifetimeConnections group by $hostname order by max($cgocalls)' -``` - -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 `internal/mapr/logformat` 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. - -=> ./dtail-usage-examples/dmap.gif DMap example - -## How to use the DTail serverless mode - -Until now, all examples so far required to have remote server(s) to connect to. That makes sense, as after all DTail is a *distributed* tool. However, there are circumstances where you don't really need to connect to a server remotely. For example, you already have a login shell open to the server an all what you want is to run some queries directly on local log files. - -The serverless mode does not require any `dserver` up and running and therefore there is no networking/SSH involved. - -All commands shown so far also work in a serverless mode. All what needs to be done is to omit a server list. The DTail client then starts in serverless mode. - -### Serverless map-reduce query - -The following `dmap` example is the same as the previously shown one, but the difference is that it operates on a local log file directly: - -```shell -% dmap --files /var/log/dserver/dserver.log - --query 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg, - lifetimeConnections group by $hostname order by max($cgocalls)' -``` - -As a shorthand version the following command can be used: - -```shell -% dmap 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg, -lifetimeConnections group by $hostname order by max($cgocalls)' /var/log/dsever/dserver.log -``` - -You can also use a file input pipe as follows: - -```shell -% cat /var/log/dserver/dserver.log | \ - dmap 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg, - lifetimeConnections group by $hostname order by max($cgocalls)' -``` - -### Aggregating CSV files - -In essence, this works exactly like aggregating logs. All files operated on must be valid CSV files and the first line of the CSV must be the header. E.g.: - -```shell -% cat example.csv -name,lastname,age,profession -Michael,Jordan,40,Basketball player -Michael,Jackson,100,Singer -Albert,Einstein,200,Physician -% dmap --query 'select lastname,name where age > 40 logformat csv outfile result.csv' example.csv -% cat result.csv -lastname,name -Jackson,Michael -Einstein,Albert -``` - -DMap can also be used to query and aggregate CSV files from remote servers. - -### Other serverless commands - -The serverless mode works transparently with all other DTail commands. Here are some examples: - -```shell -% dtail /var/log/dserver/dserver.log -``` - -```shell -% dtail --logLevel trace /var/log/dserver/dserver.log -``` - -```shell -% dcat /etc/passwd -``` - -```shell -% dcat --plain /etc/passwd > /etc/test -# Should show no differences. -diff /etc/test /etc/passwd -``` - -```shell -% dgrep --regex ERROR --files /var/log/dserver/dsever.log -``` - -```shell -% dgrep --before 10 --after 10 --max 10 --grep ERROR /var/log/dserver/dsever.log - -Use `--help` for more available options. Or go to the DTail page for more information! Hope you find DTail useful! - -Other related posts are: - -<< template::inline::index dtail - -Thanks! - -Paul - -E-Mail your comments to `foo@paul.cyou` :-) - -=> ../ Back to the main site diff --git a/gemfeed/atom.xml b/gemfeed/atom.xml index b5314521..53e57988 100644 --- a/gemfeed/atom.xml +++ b/gemfeed/atom.xml @@ -1,6 +1,6 @@ - 2023-09-25T15:14:22+03:00 + 2023-09-26T21:20:36+03:00 foo.zone feed To be in the .zone! @@ -320,7 +320,7 @@ http://www.gnu.org/software/src-highlite -->
    Paul

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    Back to the main site
    @@ -394,7 +394,7 @@ http://www.gnu.org/software/src-highlite -->
    The fourth part of this blog series will be published soon :-)

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    +E-Mail your comments to paul@nospam.buetow.org :-)

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    @@ -459,7 +459,7 @@ http://www.gnu.org/software/src-highlite -->
    2023-08-20 Site Reliability Engineering - Part 3: On-Call Culture and the Human Aspect

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    @@ -533,7 +533,7 @@ DC on fire:
    2023-08-19 Site Reliability Engineering - Part 2: Operational Balance in SRE

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    @@ -661,7 +661,7 @@ http://www.gnu.org/software/src-highlite --> 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³ (You are currently reading this)

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    @@ -984,7 +984,7 @@ http://www.gnu.org/software/src-highlite --> 2023-05-06 "The Obstacle is the Way" book notes
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes (You are currently reading this)

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    +E-Mail your comments to paul@nospam.buetow.org :-)

    More books and other resources I found useful.
    Back to the main site
    @@ -1262,7 +1262,7 @@ http://www.gnu.org/software/src-highlite -->
    Gogios is a lightweight and straightforward monitoring tool that is perfect for small-scale environments. With its compatibility with the Nagios Check API, email notifications, and CRON-based scheduling, Gogios offers an easy-to-use solution for those looking to monitor a limited number of resources. I personally use it to execute around 500 checks on my personal server infrastructure. I am very happy with this solution.

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    @@ -1371,7 +1371,7 @@ http://www.gnu.org/software/src-highlite --> 2023-05-06 "The Obstacle is the Way" book notes (You are currently reading this)
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    More books and other resources I found useful.
    Back to the main site
    @@ -1827,7 +1827,7 @@ ok codeberg.org/snonux/algorithms/sort I won't write any benchmark for sleep sort; that will be done for the algorithms to come in this series :-).

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    @@ -1982,7 +1982,7 @@ ok codeberg.org/snonux/algorithms/sort 2023-05-06 "The Obstacle is the Way" book notes
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes

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    Back to the main site
    @@ -2155,7 +2155,7 @@ The remaining content of the Gemtext file... 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again² (You are currently reading this)
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

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    @@ -2263,7 +2263,7 @@ The remaining content of the Gemtext file... 2023-05-06 "The Obstacle is the Way" book notes
    2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes

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    +E-Mail your comments to paul@nospam.buetow.org :-)

    More books and other resources I found useful.
    Back to the main site
    @@ -2358,7 +2358,7 @@ The remaining content of the Gemtext file...
    There are some days at work you feel drained afterwards and think you didn't progress towards your goals at all. It's more challenging to shut down from work after such a day. A quick hack is to work on a quick win before the end of the day, giving you a sense of accomplishment after all. Another way is to make progress on your fun passion project after work. It must not be work-related, but a sense of accomplishment will still be there.

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    @@ -2515,7 +2515,7 @@ Art by Joan Stark
    And, of course, GrapheneOS is an open-source project. This is a good thing; however, on the other side, nobody can guarantee that the OS will not break or will not damage your phone. You have to trust the GrapheneOS project and donate to the project so they can keep up with the great work. But I rather trust the GrapheneOS team than big tech.

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    @@ -2639,7 +2639,7 @@ Art by Joan Stark
    Am I a Java expert now? No, by far not. But I am better now than before :-).

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    @@ -2772,7 +2772,7 @@ nmap ,i !wpbpaste<C
    https://github.com/NvChad/NvChad

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    Back to the main site
    @@ -3138,7 +3138,7 @@ REMOTE|fishfinger|100|7|fstab|093f510ec5c0f512.h /usr/local ffs rw,wxallowed,nod 2022-10-30 Installing DTail on OpenBSD (You are currently reading this)
    2023-09-25 DTail usage examples

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    +E-Mail your comments to paul@nospam.buetow.org :-)

    Back to the main site
    @@ -3252,7 +3252,7 @@ jgs (________\ \
    I wouldn't say I like checking social media, as it can consume a lot of time and can become addictive. But once in a while, I want to catch up with my "networks". After a bad night's sleep, it's the perfect time to check your social media. Once done, you don't have to do it anymore for the next couple of days!

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    Back to the main site
    @@ -3371,7 +3371,7 @@ http://www.gnu.org/software/src-highlite --> 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

    -E-Mail your comments to foo@paul.cyou :-)
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    Back to the main site
    @@ -4049,7 +4049,7 @@ rex commons
    Why re-inventing the wheel? I love that a Rexfile is just a Perl DSL. Also, OpenBSD comes with Perl in the base system. So no new programming language had to be added to my mix for the configuration management system. Also, the acme.sh shell script is not a Bash but a standard Bourne shell script, so I didn't have to install an additional shell as OpenBSD does not come with the Bash pre-installed.

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    @@ -4393,7 +4393,7 @@ v = 008 [v = p*c*(s != c ? 2 : 1)] Total logical CPUs
    Welcome to the Geminispae

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    @@ -4559,7 +4559,7 @@ v = 008 [v = p*c*(s != c ? 2 : 1)] Total logical CPUs 2022-05-27 Perl is still a great choice (You are currently reading this)
    2023-05-01 Unveiling guprecords.raku: Global Uptime Records with Raku

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    @@ -4718,7 +4718,7 @@ learn () {

  • The Off Switch; Mark Cropley; Virgin Books
  • Ultralearning; Scott Young; Thorsons

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    @@ -5039,7 +5039,7 @@ exec /usr/local/bin/dtailhealth --server localhost:2222
    Paul

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    @@ -5286,7 +5286,7 @@ GNU/kFreeBSD rhea.buetow.org 8.0-RELEASE-p5 FreeBSD 8.0-RELEASE-p5 #2: Sat Nov 2 DragonFly BSD - Fork of FreeBSD 4
    Phosh (on postmarketOS) - A true Linux shell for the smartphone

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    Back to the main site
    @@ -5351,7 +5351,7 @@ GNU/kFreeBSD rhea.buetow.org 8.0-RELEASE-p5 FreeBSD 8.0-RELEASE-p5 #2: Sat Nov 2
    The host buetow.org will stay. However, not as the primary address for this site. I will keep using it for my personal internet infrastructure as well as for most of my E-Mail addresses. I used buetow.org for that over the past 10 years already anyway and that won't change any time soon. I don't know what I am going to do with snonux.de in the long run. A .de SLD (for Germany) is pretty cheap, so I might just keep it for now.

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    @@ -5859,7 +5859,7 @@ PAUL:X:1000:1000:PAUL BUETOW:/HOME/PAUL:/BIN/BASH 2021-11-29 Bash Golf Part 1
    2022-01-01 Bash Golf Part 2 (You are currently reading this)

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    @@ -6003,7 +6003,7 @@ PAUL:X:1000:1000:PAUL BUETOW:/HOME/PAUL:/BIN/BASH
    https://unixsheikh.com/articles/how-to-stay-sane-in-todays-world-of-tech.html

    -E-Mail your comments to foo@paul.cyou :-)
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    @@ -6493,7 +6493,7 @@ bash: line 1: 1/10.0 : syntax error: invalid arithmetic operator (error token is 2021-11-29 Bash Golf Part 1 (You are currently reading this)
    2022-01-01 Bash Golf Part 2

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    @@ -6614,7 +6614,7 @@ bash: line 1: 1/10.0 : syntax error: invalid arithmetic operator (error token is
    This usually means creating one or more tickets, which will be dealt with soon. Once the permanent fix is deployed, you can remove your ad-hoc automation and monitoring around it and focus on your regular work again.

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    @@ -6728,7 +6728,7 @@ bash: line 1: 1/10.0 : syntax error: invalid arithmetic operator (error token is
    Enough ranted for now!

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    Controversially, a lack of features is a feature. Enjoy your peace an quiet. - Michael W Lucas

    @@ -6808,7 +6808,7 @@ bash: line 1: 1/10.0 : syntax error: invalid arithmetic operator (error token is
    Do you need Microsoft Word? Why don't you just use the Vim text editor or GNU Emacs to write your letters? If that's too nerdy, you can still use open-source alternatives such as AbiWord or LibreOffice. Larger organizations have the tendency to standardize the software their employees have to use. Unfortunately, as Microsoft Word is the de-facto standard text processing program, most companies prefer Word over LibreOffice. Same with Microsoft Excel vs LibreOffice Calc or other spreadsheet alternatives like Gnumeric. I don't know why that is; please....

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    I only use free and open-source operating systems on my personal Laptops, Desktop PCs and servers (FreeBSD and Linux based ones). Most of the programs and apps I use on them are free and open-source as well, and I am comfortable with it for over twenty years. Exceptions are the BIOSes and some firmwares of my devices. I also use Skype as most of my friends and family are using it. They are, unfortunately, proprietary software still. But I will be looking into Matrix as a Skype alternative when I have time. There are also open BIOS alternatives, but they usually don't work on my devices.

    @@ -6865,7 +6865,7 @@ bash: line 1: 1/10.0 : syntax error: invalid arithmetic operator (error token is
    You have better chances when you know how to manage your own server and install and manage alternatives to the big cloud providers by yourself. I have the advantage that I have work experience as a Linux Systems Administrator here. I mentioned NextCloud already. I use NextCloud for online photo and file storage, contact and calendar sync and as an RSS news feed server. You could do the same with your own E-Mail server, you can also host your own website and blog. I also mentioned Matrix as a Skype alternative (which could also be an alternative to WhatsApp, Skype, Telegram, Viber, ...). I don't know a lot about Matrix yet, but it seems to be a very neat alternative. I am ready to invest time in it as one of my future personal pet projects. Not only because I think it's better, but also because for fun and as a hobby. But this doesn't mean that I invest *all* of my personal free time in it.

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    @@ -6988,7 +6988,7 @@ Hello World
    Will I abandon my beloved Perl? Probably not. There are also some Perl scripts I use at work. But unfortunately I only have a limited amount of time and I have to use it wisely. I might look into Raku (formerly known as Perl 6) next year and use it for a personal pet project, who knows. :-). I also highly recommend reading the two Perl books "Modern Perl" and "Higher-Order Perl".

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    Back to the main site
    @@ -7193,7 +7193,7 @@ assert::equals "$(generate::m 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

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    @@ -7600,7 +7600,7 @@ fi 2021-11-29 Bash Golf Part 1
    2022-01-01 Bash Golf Part 2

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    @@ -7706,7 +7706,7 @@ fi 2023-03-25 Gemtexter 2.0.0 - Let's Gemtext again²
    2023-07-21 Gemtexter 2.1.0 - Let's Gemtext again³

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    Back to the main site
    @@ -7839,7 +7839,7 @@ dtail –servers serverlist.txt –files ‘/var/log/*.log’ –regex ‘(?i:er 2022-10-30 Installing DTail on OpenBSD
    2023-09-25 DTail usage examples

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    @@ -8045,7 +8045,7 @@ Total time: 1213.00s Graphite
    Memory mapped I/O

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    Back to the main site
    @@ -8178,7 +8178,7 @@ http://www.gnu.org/software/src-highlite -->
    C is a very old programming language with it's quirks. This might be one of the reasons why Linux will also let Rust code in.

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    Back to the main site
    @@ -8433,7 +8433,7 @@ apply Service "dig6" {
    That's much more comfortable now than manually clicking at some web UIs at Schlund Technologies.

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    Back to the main site
    @@ -8479,7 +8479,7 @@ apply Service "dig6" {
    Furthermore, I added scrubbing ("zpool scrub...") to the script. It ensures that the file system is consistent and that there are no bad blocks on the disk and the file system. To increase the reliability, I also run a "zfs set copies=2 zroot". That setting is also synchronized to the offsite ZFS pool. ZFS stores every data block to disk twice now. Yes, it consumes twice as much disk space, making it better fault-tolerant against hardware errors (e.g. only individual disk sectors going bad).

    -E-Mail your comments to foo@paul.cyou :-)
    +E-Mail your comments to paul@nospam.buetow.org :-)

    Back to the main site
    diff --git a/index.html b/index.html index 63a31604..0945c6aa 100644 --- a/index.html +++ b/index.html @@ -10,7 +10,7 @@

    foo.zone



    -This site was generated at 2023-09-25T15:14:22+03:00 by Gemtexter
    +This site was generated at 2023-09-26T21:20:36+03:00 by Gemtexter

        |\---/|
diff --git a/notes/career-guide-and-soft-skills.html b/notes/career-guide-and-soft-skills.html
index f815aed5..0d026d72 100644
--- a/notes/career-guide-and-soft-skills.html
+++ b/notes/career-guide-and-soft-skills.html
@@ -313,7 +313,7 @@
 2023-05-06 "The Obstacle is the Way" book notes
    
 2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes (You are currently reading this)
    
 
    
-E-Mail your comments to foo@paul.cyou :-)
    
+E-Mail your comments to paul@nospam.buetow.org :-)
    
 
    
 More books and other resources I found useful.
    
 Back to the main site
    
diff --git a/notes/never-split-the-difference.html b/notes/never-split-the-difference.html
index 9f0d1fa5..da459d92 100644
--- a/notes/never-split-the-difference.html
+++ b/notes/never-split-the-difference.html
@@ -145,7 +145,7 @@
 2023-05-06 "The Obstacle is the Way" book notes
    
 2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes
    
 
    
-E-Mail your comments to foo@paul.cyou :-)
    
+E-Mail your comments to paul@nospam.buetow.org :-)
    
 
    
 Back to the main site
    
 
    
diff --git a/notes/the-obstacle-is-the-way.html b/notes/the-obstacle-is-the-way.html
index a7f3fa22..cfe010d4 100644
--- a/notes/the-obstacle-is-the-way.html
+++ b/notes/the-obstacle-is-the-way.html
@@ -99,7 +99,7 @@
 2023-05-06 "The Obstacle is the Way" book notes (You are currently reading this)
    
 2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes
    
 
    
-E-Mail your comments to foo@paul.cyou :-)
    
+E-Mail your comments to paul@nospam.buetow.org :-)
    
 
    
 More books and other resources I found useful.
    
 Back to the main site
    
diff --git a/notes/the-pragmatic-programmer.html b/notes/the-pragmatic-programmer.html
index edbe68af..850942e9 100644
--- a/notes/the-pragmatic-programmer.html
+++ b/notes/the-pragmatic-programmer.html
@@ -98,7 +98,7 @@
 2023-05-06 "The Obstacle is the Way" book notes
    
 2023-07-17 "Software Developmers Career Guide and Soft Skills" book notes
    
 
    
-E-Mail your comments to foo@paul.cyou :-)
    
+E-Mail your comments to paul@nospam.buetow.org :-)
    
 
    
 More books and other resources I found useful.
    
 Back to the main site
    
diff --git a/uptime-stats.html b/uptime-stats.html
index 13f93325..b6b37817 100644
--- a/uptime-stats.html
+++ b/uptime-stats.html
@@ -10,7 +10,7 @@
 
 
    My machine uptime stats

    
 
    
-This site was last updated at 2023-09-25T15:14:22+03:00
    
+This site was last updated at 2023-09-26T21:20:36+03:00
    
 
    
 The following stats were collected via uptimed on all of my personal computers over many years and the output was generated by guprecords, the global uptime records stats analyser of mine.
    
 
    
-- 
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