From 151af16a6ef97eb42f495a9355e43e2fd87f8d37 Mon Sep 17 00:00:00 2001 From: Paul Buetow Date: Mon, 30 Dec 2024 00:06:05 +0200 Subject: Update content for gemtext --- about/resources.gmi | 172 +-- .../2024-07-07-the-stoic-challenge-book-notes.gmi | 4 +- gemfeed/DRAFT-summary-for-202410-202411-202410.gmi | 311 +++++ .../DRAFT-summary-for-202410-202411-202410.gmi.tpl | 263 ++++ gemfeed/atom.xml | 1400 ++++++++++---------- index.gmi | 2 +- notes/the-stoic-challenge.gmi | 4 +- uptime-stats.gmi | 2 +- 8 files changed, 1367 insertions(+), 791 deletions(-) create mode 100644 gemfeed/DRAFT-summary-for-202410-202411-202410.gmi create mode 100644 gemfeed/DRAFT-summary-for-202410-202411-202410.gmi.tpl diff --git a/about/resources.gmi b/about/resources.gmi index 761cd98e..802af47b 100644 --- a/about/resources.gmi +++ b/about/resources.gmi @@ -35,99 +35,100 @@ You won't find any links on this site because, over time, the links will break. In random order: -* The Docker Book; James Turnbull; Kindle -* Ultimate Go Notebook; Bill Kennedy -* Effective awk programming; Arnold Robbins; O'Reilly * DNS and BIND; Cricket Liu; O'Reilly -* Distributed Systems: Principles and Paradigms; Andrew S. Tanenbaum; Pearson +* Systems Performance Tuning; Gian-Paolo D. Musumeci and others...; O'Reilly +* Higher Order Perl; Mark Dominus; Morgan Kaufmann * Concurrency in Go; Katherine Cox-Buday; O'Reilly +* The Practise of System and Network Administration; Thomas A. Limoncelli, Christina J. Hogan, Strata R. Chalup; Addison-Wesley Professional Pro Git; Scott Chacon, Ben Straub; Apress +* The Docker Book; James Turnbull; Kindle +* Systemprogrammierung in Go; Frank Müller; dpunkt +* The Go Programming Language; Alan A. A. Donovan; Addison-Wesley Professional +* The DevOps Handbook; Gene Kim, Jez Humble, Patrick Debois, John Willis; Audible * Object-Oriented Programming with ANSI-C; Axel-Tobias Schreiner -* Raku Recipes; J.J. Merelo; Apress -* The Pragmatic Programmer; David Thomas; Addison-Wesley -* Go Brain Teasers - Exercise Your Mind; Miki Tebeka; The Pragmatic Programmers +* 21st Century C: C Tips from the New School; Ben Klemens; O'Reilly +* Learn You Some Erlang for Great Good; Fred Herbert; No Starch Press +* The Kubernetes Book; Nigel Poulton; Unabridged Audiobook +* Distributed Systems: Principles and Paradigms; Andrew S. Tanenbaum; Pearson +* Effective Java; Joshua Bloch; Addison-Wesley Professional +* Ultimate Go Notebook; Bill Kennedy * DevOps And Site Reliability Engineering Handbook; Stephen Fleming; Audible -* Systems Performance Tuning; Gian-Paolo D. Musumeci and others...; O'Reilly -* The KCNA (Kubernetes and Cloud Native Associate) Book; Nigel Poulton * Terraform Cookbook; Mikael Krief; Packt Publishing -* The Kubernetes Book; Nigel Poulton; Unabridged Audiobook +* Amazon Web Services in Action; Michael Wittig and Andreas Wittig; Manning Publications +* Funktionale Programmierung; Peter Pepper; Springer +* Effective awk programming; Arnold Robbins; O'Reilly * Think Raku (aka Think Perl 6); Laurent Rosenfeld, Allen B. Downey; O'Reilly -* Data Science at the Command Line; Jeroen Janssens; O'Reilly -* Hands-on Infrastructure Monitoring with Prometheus; Joel Bastos, Pedro Araujo; Packt -* C++ Programming Language; Bjarne Stroustrup; -* Java ist auch eine Insel; Christian Ullenboom; -* Systemprogrammierung in Go; Frank Müller; dpunkt -* Higher Order Perl; Mark Dominus; Morgan Kaufmann -* The Practise of System and Network Administration; Thomas A. Limoncelli, Christina J. Hogan, Strata R. Chalup; Addison-Wesley Professional Pro Git; Scott Chacon, Ben Straub; Apress -* Effective Java; Joshua Bloch; Addison-Wesley Professional +* 100 Go Mistakes and How to Avoid Them; Teiva Harsanyi; Manning Publications +* Programming Perl aka "The Camel Book"; Tom Christiansen, brian d foy, Larry Wall & Jon Orwant; O'Reilly * Pro Puppet; James Turnbull, Jeffrey McCune; Apress -* Polished Ruby Programming; Jeremy Evans; Packt Publishing +* The Pragmatic Programmer; David Thomas; Addison-Wesley +* The KCNA (Kubernetes and Cloud Native Associate) Book; Nigel Poulton * Tmux 2: Productive Mouse-free Development; Brain P. Hogan; The Pragmatic Programmers -* Amazon Web Services in Action; Michael Wittig and Andreas Wittig; Manning Publications +* Polished Ruby Programming; Jeremy Evans; Packt Publishing * 97 things every SRE should know; Emil Stolarsky, Jaime Woo; O'Reilly +* Java ist auch eine Insel; Christian Ullenboom; +* Leanring eBPF; Liz Rice; O'Reilly +* Clusterbau mit Linux-HA; Michael Schwartzkopff; O'Reilly +* Learn You a Haskell for Great Good!; Miran Lipovaca; No Starch Press * Kubernetes Cookbook; Sameer Naik, Sébastien Goasguen, Jonathan Michaux; O'Reilly -* Learn You Some Erlang for Great Good; Fred Herbert; No Starch Press -* Developing Games in Java; David Brackeen and others...; New Riders -* 21st Century C: C Tips from the New School; Ben Klemens; O'Reilly * Raku Fundamentals; Moritz Lenz; Apress -* Clusterbau mit Linux-HA; Michael Schwartzkopff; O'Reilly -* Site Reliability Engineering; How Google runs production systems; O'Reilly -* The Go Programming Language; Alan A. A. Donovan; Addison-Wesley Professional -* 100 Go Mistakes and How to Avoid Them; Teiva Harsanyi; Manning Publications -* The DevOps Handbook; Gene Kim, Jez Humble, Patrick Debois, John Willis; Audible -* Leanring eBPF; Liz Rice; O'Reilly -* Funktionale Programmierung; Peter Pepper; Springer +* Raku Recipes; J.J. Merelo; Apress +* C++ Programming Language; Bjarne Stroustrup; +* Go Brain Teasers - Exercise Your Mind; Miki Tebeka; The Pragmatic Programmers * Modern Perl; Chromatic ; Onyx Neon Press +* Hands-on Infrastructure Monitoring with Prometheus; Joel Bastos, Pedro Araujo; Packt +* Site Reliability Engineering; How Google runs production systems; O'Reilly +* Developing Games in Java; David Brackeen and others...; New Riders +* Data Science at the Command Line; Jeroen Janssens; O'Reilly * Perl New Features; Joshua McAdams, brian d foy; Perl School -* Programming Perl aka "The Camel Book"; Tom Christiansen, brian d foy, Larry Wall & Jon Orwant; O'Reilly -* Learn You a Haskell for Great Good!; Miran Lipovaca; No Starch Press ## Technical references I didn't read them from the beginning to the end, but I am using them to look up things. The books are in random order: -* The Linux Programming Interface; Michael Kerrisk; No Starch Press -* BPF Performance Tools - Linux System and Application Observability, Brendan Gregg; Addison Wesley -* Algorithms; Robert Sedgewick, Kevin Wayne; Addison Wesley -* Groovy Kurz & Gut; Joerg Staudemeier; O'Reilly -* Understanding the Linux Kernel; Daniel P. Bovet, Marco Cesati; O'Reilly * Relayd and Httpd Mastery; Michael W Lucas +* Groovy Kurz & Gut; Joerg Staudemeier; O'Reilly +* Algorithms; Robert Sedgewick, Kevin Wayne; Addison Wesley +* BPF Performance Tools - Linux System and Application Observability, Brendan Gregg; Addison Wesley +* The Linux Programming Interface; Michael Kerrisk; No Starch Press * Implementing Service Level Objectives; Alex Hidalgo; O'Reilly +* Understanding the Linux Kernel; Daniel P. Bovet, Marco Cesati; O'Reilly ## Self-development and soft-skills books In random order: -* The Off Switch; Mark Cropley; Virgin Books -* Deep Work; Cal Newport; Piatkus -* Soft Skills; John Sommez; Manning Publications -* So Good They Can't Ignore You; Cal Newport; Business Plus -* The Daily Stoic; Ryan Holiday, Stephen Hanselman; Profile Books -* 101 Essays that change the way you think; Brianna Wiest; Audible -* Eat That Frog; Brian Tracy -* Search Inside Yourself - The Unexpected path to Achieving Success, Happiness (and World Peace); Chade-Meng Tan, Daniel Goleman, Jon Kabat-Zinn; HarperOne -* The Complete Software Developer's Career Guide; John Sonmez; Unabridged Audiobook -* Psycho-Cybernetics; Maxwell Maltz; Perigee Books -* Staff Engineer: Leadership beyond the management track; Will Larson; Audible -* The Power of Now; Eckhard Tolle; Yellow Kite -* Eat That Frog!; Brian Tracy; Hodder Paperbacks -* Time Management for System Administrators; Thomas A. Limoncelli; O'Reilly -* Atomic Habits; James Clear; Random House Business -* The Bullet Journal Method; Ryder Carroll; Fourth Estate -* Never Split the Difference; Chris Voss, Tahl Raz; Random House Business +* Slow Productivity; Cal Newport; Penguin Random House +* Buddah and Einstein walk into a Bar; Guy Joseph Ale, Claire Bloom; Blackstone Publishing * The Obstacle Is The Way; Ryan Holiday; Profile Books Ltd -* Influence without Authority; A. Cohen, D. Bradford; Wiley -* The Phoenix Project - A Novel About IT, DevOps, and Helping your Business Win; Gene Kim and Kevin Behr; Trade Select +* Never Split the Difference; Chris Voss, Tahl Raz; Random House Business * The Good Enough Job; Simone Stolzoff; Ebury Edge -* Ultralearning; Scott Young; Thorsons -* Slow Productivity; Cal Newport; Penguin Random House -* The Joy of Missing Out; Christina Crook; New Society Publishers +* Solve for Happy; Mo Gawdat +* Psycho-Cybernetics; Maxwell Maltz; Perigee Books +* Atomic Habits; James Clear; Random House Business * Who Moved My Cheese?; Dr. Spencer Johnson; Vermilion -* Digital Minimalism; Cal Newport; Portofolio Penguin -* Buddah and Einstein walk into a Bar; Guy Joseph Ale, Claire Bloom; Blackstone Publishing -* Ultralearning; Anna Laurent; Self-published via Amazon +* The Joy of Missing Out; Christina Crook; New Society Publishers +* Ultralearning; Scott Young; Thorsons +* Time Management for System Administrators; Thomas A. Limoncelli; O'Reilly +* The Power of Now; Eckhard Tolle; Yellow Kite * Consciousness: A Very Short Introduction; Susan Blackmore; Oxford Uiversity Press +* Eat That Frog!; Brian Tracy; Hodder Paperbacks +* Influence without Authority; A. Cohen, D. Bradford; Wiley +* 101 Essays that change the way you think; Brianna Wiest; Audible * The 7 Habits Of Highly Effective People; Stephen R. Covey; Simon & Schuster UK +* The Complete Software Developer's Career Guide; John Sonmez; Unabridged Audiobook +* Ultralearning; Anna Laurent; Self-published via Amazon * Stop starting, start finishing; Arne Roock; Lean-Kanban University +* Search Inside Yourself - The Unexpected path to Achieving Success, Happiness (and World Peace); Chade-Meng Tan, Daniel Goleman, Jon Kabat-Zinn; HarperOne +* Soft Skills; John Sommez; Manning Publications +* So Good They Can't Ignore You; Cal Newport; Business Plus +* The Daily Stoic; Ryan Holiday, Stephen Hanselman; Profile Books +* The Phoenix Project - A Novel About IT, DevOps, and Helping your Business Win; Gene Kim and Kevin Behr; Trade Select +* Staff Engineer: Leadership beyond the management track; Will Larson; Audible +* Deep Work; Cal Newport; Piatkus +* The Off Switch; Mark Cropley; Virgin Books +* The Bullet Journal Method; Ryder Carroll; Fourth Estate +* Eat That Frog; Brian Tracy +* Digital Minimalism; Cal Newport; Portofolio Penguin => ../notes/index.gmi Here are notes of mine for some of the books @@ -135,21 +136,21 @@ In random order: Some of these were in-person with exams; others were online learning lectures only. In random order: +* Ultimate Go Programming; Bill Kennedy; O'Reilly Online * AWS Immersion Day; Amazon; 1-day interactive online training * Cloud Operations on AWS - Learn how to configure, deploy, maintain, and troubleshoot your AWS environments; 3-day online live training with labs; Amazon -* Algorithms Video Lectures; Robert Sedgewick; O'Reilly Online -* The Ultimate Kubernetes Bootcamp; School of Devops; O'Reilly Online -* Scripting Vim; Damian Conway; O'Reilly Online * Red Hat Certified System Administrator; Course + certification (Although I had the option, I decided not to take the next course as it is more effective to self learn what I need) -* Functional programming lecture; Remote University of Hagen * Structure and Interpretation of Computer Programs; Harold Abelson and more...; -* F5 Loadbalancers Training; 2-day on-site training; F5, Inc. +* Scripting Vim; Damian Conway; O'Reilly Online * Linux Security and Isolation APIs Training; Michael Kerrisk; 3-day on-site training -* The Well-Grounded Rubyist Video Edition; David. A. Black; O'Reilly Online -* MySQL Deep Dive Workshop; 2-day on-site training +* The Ultimate Kubernetes Bootcamp; School of Devops; O'Reilly Online +* Functional programming lecture; Remote University of Hagen * Developing IaC with Terraform (with Live Lessons); O'Reilly Online +* Algorithms Video Lectures; Robert Sedgewick; O'Reilly Online * Protocol buffers; O'Reilly Online -* Ultimate Go Programming; Bill Kennedy; O'Reilly Online +* MySQL Deep Dive Workshop; 2-day on-site training +* The Well-Grounded Rubyist Video Edition; David. A. Black; O'Reilly Online +* F5 Loadbalancers Training; 2-day on-site training; F5, Inc. * Apache Tomcat Best Practises; 3-day on-site training ## Technical guides @@ -166,43 +167,44 @@ These are not whole books, but guides (smaller or larger) which I found very use In random order: -* Dev Interrupted -* The ProdCast (Google SRE Podcast) -* Deep Questions with Cal Newport +* Backend Banter * Maintainable +* The ProdCast (Google SRE Podcast) * Fallthrough [Golang] * Cup o' Go [Golang] -* The Pragmatic Engineer Podcast -* Backend Banter -* Fork Around And Find Out * Hidden Brain * The Changelog Podcast(s) +* Deep Questions with Cal Newport +* Dev Interrupted +* Fork Around And Find Out +* The Pragmatic Engineer Podcast ### Podcasts I liked I liked them but am not listening to them anymore. The podcasts have either "finished" (no more episodes) or I stopped listening to them due to time constraints or a shift in my interests. -* Modern Mentor * FLOSS weekly -* Go Time (predecessor of fallthrough) +* Modern Mentor * Ship It (predecessor of Fork Around And Find Out) -* Java Pub House * CRE: Chaosradio Express [german] +* Java Pub House +* Go Time (predecessor of fallthrough) ## Newsletters I like This is a mix of tech and non-tech newsletters I am subscribed to. In random order: -* Monospace Mentor -* Golang Weekly +* Applied Go Weekly Newsletter +* The Imperfectionist +* The Prgagmatic Engineer * byteSizeGo * Ruby Weekly -* The Imperfectionist -* VK Newsletter -* The Valuable Dev * Changelog News * Andreas Brandhorst Newsletter (Sci-Fi author) -* Applied Go Weekly Newsletter +* The Valuable Dev +* Monospace Mentor +* VK Newsletter +* Golang Weekly * Register Spill # Formal education diff --git a/gemfeed/2024-07-07-the-stoic-challenge-book-notes.gmi b/gemfeed/2024-07-07-the-stoic-challenge-book-notes.gmi index 020bdecc..80fd0118 100644 --- a/gemfeed/2024-07-07-the-stoic-challenge-book-notes.gmi +++ b/gemfeed/2024-07-07-the-stoic-challenge-book-notes.gmi @@ -19,11 +19,11 @@ These are my personal takeaways after reading "The Stoic Challenge: A Philosoph ## Table of Contents * ⇢ "The Stoic Challenge" book notes -* ⇢ ⇢ Got sets you up for a challenge +* ⇢ ⇢ God sets you up for a challenge * ⇢ ⇢ Negative visualization * ⇢ ⇢ Oh, nice trick, you stoic "god"! ;-) -## Got sets you up for a challenge +## God sets you up for a challenge Gods set you up for a challenge to see how resilient you are. Is getting angry worth the price? If you stay calm then you can find the optimal workaround for the obstacle. Stay calm even with big setbacks. Practice minimalism of negative emotions. diff --git a/gemfeed/DRAFT-summary-for-202410-202411-202410.gmi b/gemfeed/DRAFT-summary-for-202410-202411-202410.gmi new file mode 100644 index 00000000..9612612a --- /dev/null +++ b/gemfeed/DRAFT-summary-for-202410-202411-202410.gmi @@ -0,0 +1,311 @@ +# Summary for 202410 202411 202412 + +## Table of Contents + +* ⇢ Summary for 202410 202411 202412 +* ⇢ ⇢ October 2024 +* ⇢ ⇢ ⇢ First on-call experience in a startup. Doesn't ... +* ⇢ ⇢ ⇢ Reviewing your own PR or MR before asking ... +* ⇢ ⇢ ⇢ Fun with defer in ` ⇢golang`, I did't know, that ... +* ⇢ ⇢ ⇢ I have been in incidents. Understandably, ... +* ⇢ ⇢ ⇢ Little tips using strings in ` ⇢golang` and I ... +* ⇢ ⇢ ⇢ Reading this post about ` ⇢rust` (especially the ... +* ⇢ ⇢ ⇢ The opposite of ` ⇢ChaosMonkey` ... ... +* ⇢ ⇢ November 2024 +* ⇢ ⇢ ⇢ I just became a Silver Patreon for OSnews. What ... +* ⇢ ⇢ ⇢ Until now, I wasn't aware, that Go is under a ... +* ⇢ ⇢ ⇢ These are some book notes from "Staff Engineer" ... +* ⇢ ⇢ ⇢ Looking at ` ⇢Kubernetes`, it's pretty much ... +* ⇢ ⇢ ⇢ There has been an outage at the upstream ... +* ⇢ ⇢ ⇢ One of the more confusing parts in Go, nil ... +* ⇢ ⇢ ⇢ Agreeably, writing down with Diagrams helps you ... +* ⇢ ⇢ ⇢ I like the idea of types in Ruby. Raku is ... +* ⇢ ⇢ ⇢ So, ` ⇢Haskell` is better suited for general ... +* ⇢ ⇢ ⇢ At first, functional options add a bit of ... +* ⇢ ⇢ ⇢ Revamping my home lab a little bit. ` ⇢freebsd` ... +* ⇢ ⇢ ⇢ Revamping my home lab a little bit. ` ⇢freebsd` ... +* ⇢ ⇢ ⇢ Wondering to which ` ⇢web` ` ⇢browser` I should ... +* ⇢ ⇢ ⇢ eks-node-viewer is a nifty tool, showing the ... +* ⇢ ⇢ ⇢ Have put more Photos on - On my static photo ... +* ⇢ ⇢ ⇢ In Go, passing pointers are not automatically ... +* ⇢ ⇢ ⇢ Myself being part of an on-call rotations over ... +* ⇢ ⇢ ⇢ Feels good to code in my old love ` ⇢Perl` again ... +* ⇢ ⇢ ⇢ This is an interactive summary of the Go ... +* ⇢ ⇢ December 2024 +* ⇢ ⇢ ⇢ Thats unexpected, you cant remove a NaN key ... +* ⇢ ⇢ ⇢ My second blog post about revamping my home lab ... +* ⇢ ⇢ ⇢ Very insightful article about tech hiring in ... +* ⇢ ⇢ ⇢ for ` ⇢bpf` ` ⇢ebpf` performance debugging, have ... +* ⇢ ⇢ ⇢ 89 things he/she knows about Git commits is a ... +* ⇢ ⇢ ⇢ I found that working on multiple side projects ... +* ⇢ ⇢ ⇢ Agreed? Agreed. Besides ` ⇢Ruby`, I would also ... +* ⇢ ⇢ ⇢ Plan9 assembly format in Go, but wait, it's not ... +* ⇢ ⇢ ⇢ This is a neat blog post about the Helix text ... +* ⇢ ⇢ ⇢ This blog post is basically a rant against ... +* ⇢ ⇢ ⇢ Quick trick to get Helix themes selected ... +* ⇢ ⇢ ⇢ Example where complexity attacks you from ... +* ⇢ ⇢ ⇢ LLMs for Ops? Summaries of logs, probabilities ... +* ⇢ ⇢ ⇢ Excellent article about your dream Product ... +* ⇢ ⇢ ⇢ I just finished reading all chapters of CPU ... +* ⇢ ⇢ ⇢ Indeed, useful to know this stuff! ` ⇢sre` ... +* ⇢ ⇢ ⇢ It's the small things, which make Unix like ... + +## October 2024 + +### First on-call experience in a startup. Doesn't ... + +First on-call experience in a startup. Doesn't sound a lot of fun! But the lessons were learned! `#sre` + +=> https://ntietz.com/blog/lessons-from-my-first-on-call/ + +### Reviewing your own PR or MR before asking ... + +Reviewing your own PR or MR before asking others to review it makes a lot of sense. Have seen so many silly mistakes which would have been avoided. Saving time for the real reviewer. + +=> https://www.jvt.me/posts/2019/01/12/self-code-review/ + +### Fun with defer in `#golang`, I did't know, that ... + +Fun with defer in `#golang`, I did't know, that a defer object can either be heap or stack allocated. And there are some rules for inlining, too. + +=> https://victoriametrics.com/blog/defer-in-go/ + +### I have been in incidents. Understandably, ... + +I have been in incidents. Understandably, everyone wants the issue to be resolved as quickly and others want to know how long TTR will be. IMHO, providing no estimates at all is no solution either. So maybe give a rough estimate but clearly communicate that the estimate is rough and that X, Y, and Z can interfere, meaning there is a chance it will take longer to resolve the incident. Just my thought. What's yours? + +=> https://firehydrant.com/blog/hot-take-dont-provide-incident-resolution-estimates/ https://firehydrant.com/blog/hot-...de-incident-resolution-estimates/ + +### Little tips using strings in `#golang` and I ... + +Little tips using strings in `#golang` and I personally think one must look more into the std lib (not just for strings, also for slices, maps,...), there are tons of useful helper functions. + +=> https://www.calhoun.io/6-tips-for-using-strings-in-go/ + +### Reading this post about `#rust` (especially the ... + +Reading this post about `#rust` (especially the first part), I think I made a good choice in deciding to dive into `#golang` instead. There was a point where I wanted to learn a new programming language, and Rust was on my list of choices. I think the Go project does a much better job of deciding what goes into the language and how. What are your thoughts? + +=> https://josephg.com/blog/rewriting-rust/ + +### The opposite of `#ChaosMonkey` ... ... + +The opposite of `#ChaosMonkey` ... automatically repairing and healing services helping to reduce manual toil work. Runbooks and scripts are only the first step, followed by a fully blown service written in Go. Could be useful, but IMHO why not rather address the root causes of the manual toil work? `#sre` + +=> https://blog.cloudflare.com/nl-nl/improving-platform-resilience-at-cloudflare/ https://blog.cloudflare.com/nl-nl...latform-resilience-at-cloudflare/ + +## November 2024 + +### I just became a Silver Patreon for OSnews. What ... + +I just became a Silver Patreon for OSnews. What is OSnews? It is an independent news site about IT. It is slightly independent and, at times, alternative. I have enjoyed it since my early student days. This one and other projects I financially support are listed here: + +=> https://foo.zone/gemfeed/2024-09-07-projects-i-support.html + +### Until now, I wasn't aware, that Go is under a ... + +Until now, I wasn't aware, that Go is under a BSD-style license (3-clause as it seems). Neat. I don't know why, but I always was under the impression it would be MIT. `#bsd` `#golang` + +=> https://go.dev/LICENSE + +### These are some book notes from "Staff Engineer" ... + +These are some book notes from "Staff Engineer" – there is some really good insight into what is expected from a Staff Engineer and beyond in the industry. I wish I had read the book earlier. + +=> https://foo.zone/gemfeed/2024-10-24-staff-engineer-book-notes.html + +### Looking at `#Kubernetes`, it's pretty much ... + +Looking at `#Kubernetes`, it's pretty much following the Unix way of doing things. It has many tools, but each tool has its own single purpose: DNS, scheduling, container runtime, various controllers, networking, observability, alerting, and more services in the control plane. Everything is managed by different services or plugins, mostly running in their dedicated pods. They don't communicate through pipes, but network sockets, though. `#k8s` + +### There has been an outage at the upstream ... + +There has been an outage at the upstream network provider for OpenBSD.Amsterdam (hoster, I am using). This was the first real-world test for my KISS HA setup, and it worked flawlessly! All my sites and services failed over automatically to my other `#OpenBSD` VM! + +=> https://foo.zone/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.html https://foo.zone/gemfeed/2024-04-...gh-availability-with-OpenBSD.html +=> https://openbsd.amsterdam/ + +### One of the more confusing parts in Go, nil ... + +One of the more confusing parts in Go, nil values vs nil errors: `#golang` + +=> https://unexpected-go.com/nil-errors-that-are-non-nil-errors.html + +### Agreeably, writing down with Diagrams helps you ... + +Agreeably, writing down with Diagrams helps you to think things more through. And keeps others on the same page. Only worth for projects from a certain size, IMHO. + +=> https://ntietz.com/blog/reasons-to-write-design-docs/ + +### I like the idea of types in Ruby. Raku is ... + +I like the idea of types in Ruby. Raku is supports that already, but in Ruby, you must specify the types in a separate .rbs file, which is, in my opinion, cumbersome and is a reason not to use it extensively for now. I believe there are efforts to embed the type information in the standard .rb files, and that the .rbs is just an experiment to see how types could work out without introducing changes into the core Ruby language itself right now? `#Ruby` `#RakuLang` + +=> https://github.com/ruby/rbs + +### So, `#Haskell` is better suited for general ... + +So, `#Haskell` is better suited for general purpose than `#Rust`? I thought deploying something in Haskell means publishing an academic paper :-) Interesting rant about Rust, though: + +=> https://chrisdone.com/posts/rust/ + +### At first, functional options add a bit of ... + +At first, functional options add a bit of boilerplate, but they turn out to be quite neat, especially when you have very long parameter lists that need to be made neat and tidy. `#golang` + +=> https://www.calhoun.io/using-functional-options-instead-of-method-chaining-in-go/ https://www.calhoun.io/using-func...instead-of-method-chaining-in-go/ + +### Revamping my home lab a little bit. `#freebsd` ... + +Revamping my home lab a little bit. `#freebsd` `#bhyve` `#rocky` `#linux` `#vm` `#k3s` `#kuberbetes` `#wireguard` `#zfs` `#nfs` `#ha` `#relayd` `#k8s` `#selfhosting` `#self`-hosting `#homelab` `#home`-lab + +=> https://foo.zone/gemfeed/2024-11-17-f3s-kubernetes-with-freebsd-part-1.html https://foo.zone/gemfeed/2024-11-...bernetes-with-freebsd-part-1.html + +### Revamping my home lab a little bit. `#freebsd` ... + +Revamping my home lab a little bit. `#freebsd` `#bhyve` `#rocky` `#linux` `#vm` `#k3s` `#kubernetes` `#wireguard` `#zfs` `#nfs` `#ha` `#relayd` `#k8s` `#selfhosting` `#homelab` + +=> https://foo.zone/gemfeed/2024-11-17-f3s-kubernetes-with-freebsd-part-1.html https://foo.zone/gemfeed/2024-11-...bernetes-with-freebsd-part-1.html + +### Wondering to which `#web` `#browser` I should ... + +Wondering to which `#web` `#browser` I should switch now personally ... + +=> https://www.osnews.com/story/141100/mozilla-foundation-lays-off-30-of-its-employees-ends-advocacy-for-open-web-privacy-and-more/ https://www.osnews.com/story/1411...cy-for-open-web-privacy-and-more/ + +### eks-node-viewer is a nifty tool, showing the ... + +eks-node-viewer is a nifty tool, showing the compute nodes currently in use in the `#EKS` cluster. especially useful when dynamically allocating nodes with `#karpenter` or auto scaling groups. + +=> https://github.com/awslabs/eks-node-viewer + +### Have put more Photos on - On my static photo ... + +Have put more Photos on - On my static photo sites - Generated with a `#bash` script + +=> https://irregular.ninja + +### In Go, passing pointers are not automatically ... + +In Go, passing pointers are not automatically faster than values. Pointers often force the memory to be allocated on the heap, adding GC overhad. With values, Go can determine whether to put the memory on the stack instead. But with large structs/objects (how you want to call them) or if you want to modify state, then pointers are the semantic to use. `#golang` + +=> https://blog.boot.dev/golang/pointers-faster-than-values/ + +### Myself being part of an on-call rotations over ... + +Myself being part of an on-call rotations over my whole professional life, just have learned this lesson "Tell people who are new to on-call: Just have fun" :-) This is a neat blog post to read: + +=> https://ntietz.com/blog/what-i-tell-people-new-to-oncall/ + +### Feels good to code in my old love `#Perl` again ... + +Feels good to code in my old love `#Perl` again after a while. I am implementing a log parser for generating site stats of my personal homepage! :-) @Perl + +### This is an interactive summary of the Go ... + +This is an interactive summary of the Go release, with a lot of examples utilising iterators in the slices and map packages. Love it! `#golang` + +=> https://antonz.org/go-1-23/ + +## December 2024 + +### Thats unexpected, you cant remove a NaN key ... + +Thats unexpected, you cant remove a NaN key from a map without clearing it! `#golang` + +=> https://unexpected-go.com/you-cant-remove-a-nan-key-from-a-map-without-clearing-it.html https://unexpected-go.com/you-can...om-a-map-without-clearing-it.html + +### My second blog post about revamping my home lab ... + +My second blog post about revamping my home lab a little bit just hit the net. `#FreeBSD` `#ZFS` `#n100` `#k8s` `#k3s` `#kubernetes` + +=> https://foo.zone/gemfeed/2024-12-03-f3s-kubernetes-with-freebsd-part-2.html https://foo.zone/gemfeed/2024-12-...bernetes-with-freebsd-part-2.html + +### Very insightful article about tech hiring in ... + +Very insightful article about tech hiring in the age of LLMs. As an interviewer, I have experienced some of the scrnarios already first hand... + +=> https://newsletter.pragmaticengineer.com/p/how-genai-changes-tech-hiring https://newsletter.pragmaticengin...m/p/how-genai-changes-tech-hiring + +### for `#bpf` `#ebpf` performance debugging, have ... + +for `#bpf` `#ebpf` performance debugging, have a look at bpftop from Netflix. A neat tool showing you the estimated CPU time and other performance statistics for all the BPF programs currently loaded into the `#linux` kernel. Highly recommend! + +=> https://github.com/Netflix/bpftop + +### 89 things he/she knows about Git commits is a ... + +89 things he/she knows about Git commits is a neat list of `#Git` wisdoms + +=> https://www.jvt.me/posts/2024/07/12/things-know-commits/ + +### I found that working on multiple side projects ... + +I found that working on multiple side projects concurrently is better than concentrating on just one. This seems inefficient at first, but whenever you tend to lose motivation, you can temporarily switch to another one with full élan. However, remember to stop starting and start finishing. This doesn't mean you should be working on 10+ (and a growing list of) side projects concurrently! Select your projects and commit to finishing them before starting the next thing. For example, my current limit of concurrent side projects is around five. + +### Agreed? Agreed. Besides `#Ruby`, I would also ... + +Agreed? Agreed. Besides `#Ruby`, I would also add `#RakuLang` and `#Perl` @Perl to the list of languages that are great for shell scripts - "Making Easy Things Easy and Hard Things Possible" + +=> https://lucasoshiro.github.io/posts-en/2024-06-17-ruby-shellscript/ + +### Plan9 assembly format in Go, but wait, it's not ... + +Plan9 assembly format in Go, but wait, it's not the Operating System Plan9! `#golang` `#rabbithole` + +=> https://www.osnews.com/story/140941/go-plan9-memo-speeding-up-calculations-450/ https://www.osnews.com/story/1409...emo-speeding-up-calculations-450/ + +### This is a neat blog post about the Helix text ... + +This is a neat blog post about the Helix text editor, to which I personally switched around a year ago (from NeoVim). I should blog about my experience as well. To summarize: I am using it together with the terminal multiplexer `#tmux`. It doesn't bother me that Helix is purely terminal-based and therefore everything has to be in the same font. `#HelixEditor` + +=> https://jonathan-frere.com/posts/helix/ + +### This blog post is basically a rant against ... + +This blog post is basically a rant against DataDog... Personally, I don't have much experience with DataDog (actually, I have never used it), but one reason to work with logs at my day job (with over 2,000 physical server machines) and to be cost-effective is by using dtail! `#dtail` `#logs` `#logmanagement` + +=> https://crys.site/blog/2024/reinventint-the-weel/ +=> https://dtail.dev + +### Quick trick to get Helix themes selected ... + +Quick trick to get Helix themes selected randomly `#HelixEditor` + +=> https://foo.zone/gemfeed/2024-12-15-random-helix-themes.html + +### Example where complexity attacks you from ... + +Example where complexity attacks you from behind `#k8s` `#kubernetes` `#OpenAI` + +=> https://surfingcomplexity.blog/2024/12/14/quick-takes-on-the-recent-openai-public-incident-write-up/ https://surfingcomplexity.blog/20...-openai-public-incident-write-up/ + +### LLMs for Ops? Summaries of logs, probabilities ... + +LLMs for Ops? Summaries of logs, probabilities about correctness, auto-generating Ansible, some uses cases are there. Wouldn't trust it fully, though. + +=> https://youtu.be/WodaffxVq-E?si=noY0egrfl5izCSQI + +### Excellent article about your dream Product ... + +Excellent article about your dream Product Manager: Why every software team needs a product manager to thrive via @wallabagapp + +=> https://testdouble.com/insights/why-product-managers-accelerate-improve-software-delivery https://testdouble.com/insights/w...elerate-improve-software-delivery + +### I just finished reading all chapters of CPU ... + +I just finished reading all chapters of CPU land: ... not claiming to remember every detail, but it is a great refresher how CPUs and operating systems actually work under the hood when you execute a program, which we tend to forget in our higher abstraction world. I liked the "story" and some of the jokes along the way! Size wise, it is pretty digestable (not talking about books, but only 7 web articles/chapters)! `#cpu` `#linux` `#unix` `#kernel` `#macOS` + +=> https://cpu.land/ + +### Indeed, useful to know this stuff! `#sre` ... + +Indeed, useful to know this stuff! `#sre` + +=> https://biriukov.dev/docs/resolver-dual-stack-application/0-sre-should-know-about-gnu-linux-resolvers-and-dual-stack-applications/ https://biriukov.dev/docs/resolve...vers-and-dual-stack-applications/ + +### It's the small things, which make Unix like ... + +It's the small things, which make Unix like systems, like GNU/Linux, interesting. Didn't know about this `#GNU` `#Tar` behaviour yet: + +=> https://xeiaso.net/notes/2024/pop-quiz-tar/15110 diff --git a/gemfeed/DRAFT-summary-for-202410-202411-202410.gmi.tpl b/gemfeed/DRAFT-summary-for-202410-202411-202410.gmi.tpl new file mode 100644 index 00000000..c16bdba7 --- /dev/null +++ b/gemfeed/DRAFT-summary-for-202410-202411-202410.gmi.tpl @@ -0,0 +1,263 @@ +# Summary for 202410 202411 202412 + +<< template::inline::toc + +## October 2024 + +### First on-call experience in a startup. Doesn't ... + +First on-call experience in a startup. Doesn't sound a lot of fun! But the lessons were learned! `#sre` + +=> https://ntietz.com/blog/lessons-from-my-first-on-call/ + +### Reviewing your own PR or MR before asking ... + +Reviewing your own PR or MR before asking others to review it makes a lot of sense. Have seen so many silly mistakes which would have been avoided. Saving time for the real reviewer. + +=> https://www.jvt.me/posts/2019/01/12/self-code-review/ + +### Fun with defer in `#golang`, I did't know, that ... + +Fun with defer in `#golang`, I did't know, that a defer object can either be heap or stack allocated. And there are some rules for inlining, too. + +=> https://victoriametrics.com/blog/defer-in-go/ + +### I have been in incidents. Understandably, ... + +I have been in incidents. Understandably, everyone wants the issue to be resolved as quickly and others want to know how long TTR will be. IMHO, providing no estimates at all is no solution either. So maybe give a rough estimate but clearly communicate that the estimate is rough and that X, Y, and Z can interfere, meaning there is a chance it will take longer to resolve the incident. Just my thought. What's yours? + +=> https://firehydrant.com/blog/hot-take-dont-provide-incident-resolution-estimates/ https://firehydrant.com/blog/hot-...de-incident-resolution-estimates/ + +### Little tips using strings in `#golang` and I ... + +Little tips using strings in `#golang` and I personally think one must look more into the std lib (not just for strings, also for slices, maps,...), there are tons of useful helper functions. + +=> https://www.calhoun.io/6-tips-for-using-strings-in-go/ + +### Reading this post about `#rust` (especially the ... + +Reading this post about `#rust` (especially the first part), I think I made a good choice in deciding to dive into `#golang` instead. There was a point where I wanted to learn a new programming language, and Rust was on my list of choices. I think the Go project does a much better job of deciding what goes into the language and how. What are your thoughts? + +=> https://josephg.com/blog/rewriting-rust/ + +### The opposite of `#ChaosMonkey` ... ... + +The opposite of `#ChaosMonkey` ... automatically repairing and healing services helping to reduce manual toil work. Runbooks and scripts are only the first step, followed by a fully blown service written in Go. Could be useful, but IMHO why not rather address the root causes of the manual toil work? `#sre` + +=> https://blog.cloudflare.com/nl-nl/improving-platform-resilience-at-cloudflare/ https://blog.cloudflare.com/nl-nl...latform-resilience-at-cloudflare/ + +## November 2024 + +### I just became a Silver Patreon for OSnews. What ... + +I just became a Silver Patreon for OSnews. What is OSnews? It is an independent news site about IT. It is slightly independent and, at times, alternative. I have enjoyed it since my early student days. This one and other projects I financially support are listed here: + +=> https://foo.zone/gemfeed/2024-09-07-projects-i-support.html + +### Until now, I wasn't aware, that Go is under a ... + +Until now, I wasn't aware, that Go is under a BSD-style license (3-clause as it seems). Neat. I don't know why, but I always was under the impression it would be MIT. `#bsd` `#golang` + +=> https://go.dev/LICENSE + +### These are some book notes from "Staff Engineer" ... + +These are some book notes from "Staff Engineer" – there is some really good insight into what is expected from a Staff Engineer and beyond in the industry. I wish I had read the book earlier. + +=> https://foo.zone/gemfeed/2024-10-24-staff-engineer-book-notes.html + +### Looking at `#Kubernetes`, it's pretty much ... + +Looking at `#Kubernetes`, it's pretty much following the Unix way of doing things. It has many tools, but each tool has its own single purpose: DNS, scheduling, container runtime, various controllers, networking, observability, alerting, and more services in the control plane. Everything is managed by different services or plugins, mostly running in their dedicated pods. They don't communicate through pipes, but network sockets, though. `#k8s` + +### There has been an outage at the upstream ... + +There has been an outage at the upstream network provider for OpenBSD.Amsterdam (hoster, I am using). This was the first real-world test for my KISS HA setup, and it worked flawlessly! All my sites and services failed over automatically to my other `#OpenBSD` VM! + +=> https://foo.zone/gemfeed/2024-04-01-KISS-high-availability-with-OpenBSD.html https://foo.zone/gemfeed/2024-04-...gh-availability-with-OpenBSD.html +=> https://openbsd.amsterdam/ + +### One of the more confusing parts in Go, nil ... + +One of the more confusing parts in Go, nil values vs nil errors: `#golang` + +=> https://unexpected-go.com/nil-errors-that-are-non-nil-errors.html + +### Agreeably, writing down with Diagrams helps you ... + +Agreeably, writing down with Diagrams helps you to think things more through. And keeps others on the same page. Only worth for projects from a certain size, IMHO. + +=> https://ntietz.com/blog/reasons-to-write-design-docs/ + +### I like the idea of types in Ruby. Raku is ... + +I like the idea of types in Ruby. Raku is supports that already, but in Ruby, you must specify the types in a separate .rbs file, which is, in my opinion, cumbersome and is a reason not to use it extensively for now. I believe there are efforts to embed the type information in the standard .rb files, and that the .rbs is just an experiment to see how types could work out without introducing changes into the core Ruby language itself right now? `#Ruby` `#RakuLang` + +=> https://github.com/ruby/rbs + +### So, `#Haskell` is better suited for general ... + +So, `#Haskell` is better suited for general purpose than `#Rust`? I thought deploying something in Haskell means publishing an academic paper :-) Interesting rant about Rust, though: + +=> https://chrisdone.com/posts/rust/ + +### At first, functional options add a bit of ... + +At first, functional options add a bit of boilerplate, but they turn out to be quite neat, especially when you have very long parameter lists that need to be made neat and tidy. `#golang` + +=> https://www.calhoun.io/using-functional-options-instead-of-method-chaining-in-go/ https://www.calhoun.io/using-func...instead-of-method-chaining-in-go/ + +### Revamping my home lab a little bit. `#freebsd` ... + +Revamping my home lab a little bit. `#freebsd` `#bhyve` `#rocky` `#linux` `#vm` `#k3s` `#kuberbetes` `#wireguard` `#zfs` `#nfs` `#ha` `#relayd` `#k8s` `#selfhosting` `#self`-hosting `#homelab` `#home`-lab + +=> https://foo.zone/gemfeed/2024-11-17-f3s-kubernetes-with-freebsd-part-1.html https://foo.zone/gemfeed/2024-11-...bernetes-with-freebsd-part-1.html + +### Revamping my home lab a little bit. `#freebsd` ... + +Revamping my home lab a little bit. `#freebsd` `#bhyve` `#rocky` `#linux` `#vm` `#k3s` `#kubernetes` `#wireguard` `#zfs` `#nfs` `#ha` `#relayd` `#k8s` `#selfhosting` `#homelab` + +=> https://foo.zone/gemfeed/2024-11-17-f3s-kubernetes-with-freebsd-part-1.html https://foo.zone/gemfeed/2024-11-...bernetes-with-freebsd-part-1.html + +### Wondering to which `#web` `#browser` I should ... + +Wondering to which `#web` `#browser` I should switch now personally ... + +=> https://www.osnews.com/story/141100/mozilla-foundation-lays-off-30-of-its-employees-ends-advocacy-for-open-web-privacy-and-more/ https://www.osnews.com/story/1411...cy-for-open-web-privacy-and-more/ + +### eks-node-viewer is a nifty tool, showing the ... + +eks-node-viewer is a nifty tool, showing the compute nodes currently in use in the `#EKS` cluster. especially useful when dynamically allocating nodes with `#karpenter` or auto scaling groups. + +=> https://github.com/awslabs/eks-node-viewer + +### Have put more Photos on - On my static photo ... + +Have put more Photos on - On my static photo sites - Generated with a `#bash` script + +=> https://irregular.ninja + +### In Go, passing pointers are not automatically ... + +In Go, passing pointers are not automatically faster than values. Pointers often force the memory to be allocated on the heap, adding GC overhad. With values, Go can determine whether to put the memory on the stack instead. But with large structs/objects (how you want to call them) or if you want to modify state, then pointers are the semantic to use. `#golang` + +=> https://blog.boot.dev/golang/pointers-faster-than-values/ + +### Myself being part of an on-call rotations over ... + +Myself being part of an on-call rotations over my whole professional life, just have learned this lesson "Tell people who are new to on-call: Just have fun" :-) This is a neat blog post to read: + +=> https://ntietz.com/blog/what-i-tell-people-new-to-oncall/ + +### Feels good to code in my old love `#Perl` again ... + +Feels good to code in my old love `#Perl` again after a while. I am implementing a log parser for generating site stats of my personal homepage! :-) @Perl + +### This is an interactive summary of the Go ... + +This is an interactive summary of the Go release, with a lot of examples utilising iterators in the slices and map packages. Love it! `#golang` + +=> https://antonz.org/go-1-23/ + +## December 2024 + +### Thats unexpected, you cant remove a NaN key ... + +Thats unexpected, you cant remove a NaN key from a map without clearing it! `#golang` + +=> https://unexpected-go.com/you-cant-remove-a-nan-key-from-a-map-without-clearing-it.html https://unexpected-go.com/you-can...om-a-map-without-clearing-it.html + +### My second blog post about revamping my home lab ... + +My second blog post about revamping my home lab a little bit just hit the net. `#FreeBSD` `#ZFS` `#n100` `#k8s` `#k3s` `#kubernetes` + +=> https://foo.zone/gemfeed/2024-12-03-f3s-kubernetes-with-freebsd-part-2.html https://foo.zone/gemfeed/2024-12-...bernetes-with-freebsd-part-2.html + +### Very insightful article about tech hiring in ... + +Very insightful article about tech hiring in the age of LLMs. As an interviewer, I have experienced some of the scrnarios already first hand... + +=> https://newsletter.pragmaticengineer.com/p/how-genai-changes-tech-hiring https://newsletter.pragmaticengin...m/p/how-genai-changes-tech-hiring + +### for `#bpf` `#ebpf` performance debugging, have ... + +for `#bpf` `#ebpf` performance debugging, have a look at bpftop from Netflix. A neat tool showing you the estimated CPU time and other performance statistics for all the BPF programs currently loaded into the `#linux` kernel. Highly recommend! + +=> https://github.com/Netflix/bpftop + +### 89 things he/she knows about Git commits is a ... + +89 things he/she knows about Git commits is a neat list of `#Git` wisdoms + +=> https://www.jvt.me/posts/2024/07/12/things-know-commits/ + +### I found that working on multiple side projects ... + +I found that working on multiple side projects concurrently is better than concentrating on just one. This seems inefficient at first, but whenever you tend to lose motivation, you can temporarily switch to another one with full élan. However, remember to stop starting and start finishing. This doesn't mean you should be working on 10+ (and a growing list of) side projects concurrently! Select your projects and commit to finishing them before starting the next thing. For example, my current limit of concurrent side projects is around five. + +### Agreed? Agreed. Besides `#Ruby`, I would also ... + +Agreed? Agreed. Besides `#Ruby`, I would also add `#RakuLang` and `#Perl` @Perl to the list of languages that are great for shell scripts - "Making Easy Things Easy and Hard Things Possible" + +=> https://lucasoshiro.github.io/posts-en/2024-06-17-ruby-shellscript/ + +### Plan9 assembly format in Go, but wait, it's not ... + +Plan9 assembly format in Go, but wait, it's not the Operating System Plan9! `#golang` `#rabbithole` + +=> https://www.osnews.com/story/140941/go-plan9-memo-speeding-up-calculations-450/ https://www.osnews.com/story/1409...emo-speeding-up-calculations-450/ + +### This is a neat blog post about the Helix text ... + +This is a neat blog post about the Helix text editor, to which I personally switched around a year ago (from NeoVim). I should blog about my experience as well. To summarize: I am using it together with the terminal multiplexer `#tmux`. It doesn't bother me that Helix is purely terminal-based and therefore everything has to be in the same font. `#HelixEditor` + +=> https://jonathan-frere.com/posts/helix/ + +### This blog post is basically a rant against ... + +This blog post is basically a rant against DataDog... Personally, I don't have much experience with DataDog (actually, I have never used it), but one reason to work with logs at my day job (with over 2,000 physical server machines) and to be cost-effective is by using dtail! `#dtail` `#logs` `#logmanagement` + +=> https://crys.site/blog/2024/reinventint-the-weel/ +=> https://dtail.dev + +### Quick trick to get Helix themes selected ... + +Quick trick to get Helix themes selected randomly `#HelixEditor` + +=> https://foo.zone/gemfeed/2024-12-15-random-helix-themes.html + +### Example where complexity attacks you from ... + +Example where complexity attacks you from behind `#k8s` `#kubernetes` `#OpenAI` + +=> https://surfingcomplexity.blog/2024/12/14/quick-takes-on-the-recent-openai-public-incident-write-up/ https://surfingcomplexity.blog/20...-openai-public-incident-write-up/ + +### LLMs for Ops? Summaries of logs, probabilities ... + +LLMs for Ops? Summaries of logs, probabilities about correctness, auto-generating Ansible, some uses cases are there. Wouldn't trust it fully, though. + +=> https://youtu.be/WodaffxVq-E?si=noY0egrfl5izCSQI + +### Excellent article about your dream Product ... + +Excellent article about your dream Product Manager: Why every software team needs a product manager to thrive via @wallabagapp + +=> https://testdouble.com/insights/why-product-managers-accelerate-improve-software-delivery https://testdouble.com/insights/w...elerate-improve-software-delivery + +### I just finished reading all chapters of CPU ... + +I just finished reading all chapters of CPU land: ... not claiming to remember every detail, but it is a great refresher how CPUs and operating systems actually work under the hood when you execute a program, which we tend to forget in our higher abstraction world. I liked the "story" and some of the jokes along the way! Size wise, it is pretty digestable (not talking about books, but only 7 web articles/chapters)! `#cpu` `#linux` `#unix` `#kernel` `#macOS` + +=> https://cpu.land/ + +### Indeed, useful to know this stuff! `#sre` ... + +Indeed, useful to know this stuff! `#sre` + +=> https://biriukov.dev/docs/resolver-dual-stack-application/0-sre-should-know-about-gnu-linux-resolvers-and-dual-stack-applications/ https://biriukov.dev/docs/resolve...vers-and-dual-stack-applications/ + +### It's the small things, which make Unix like ... + +It's the small things, which make Unix like systems, like GNU/Linux, interesting. Didn't know about this `#GNU` `#Tar` behaviour yet: + +=> https://xeiaso.net/notes/2024/pop-quiz-tar/15110 diff --git a/gemfeed/atom.xml b/gemfeed/atom.xml index ea33e0a8..4f7ec903 100644 --- a/gemfeed/atom.xml +++ b/gemfeed/atom.xml @@ -1,6 +1,6 @@ - 2024-12-18T23:28:38+02:00 + 2024-12-29T23:48:55+02:00 foo.zone feed To be in the .zone! @@ -243,9 +243,9 @@ http://www.gnu.org/software/src-highlite --> by Lorenzo Bettini http://www.lorenzobettini.it http://www.gnu.org/software/src-highlite --> -
[paul@earth]~/Downloads% sudo dd \
-  if=FreeBSD-14.1-RELEASE-amd64-bootonly.iso \
-  of=/dev/sda conv=sync
+
[paul@earth]~/Downloads% sudo dd \
+  if=FreeBSD-14.1-RELEASE-amd64-bootonly.iso \
+  of=/dev/sda conv=sync
 

 

 Next, I plugged the Beelinks (one after another) into my monitor via HDMI (the resolution of the FreeBSD text console seems strangely stretched, as I am using the LG Dual Up monitor), connected Ethernet, an external USB keyboard, and the FreeBSD USB stick, and booted the devices up. With F7, I entered the boot menu and selected the USB stick for the FreeBSD installation.

@@ -271,9 +271,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
root@f0:~ # freebsd-update fetch
-root@f0:~ # freebsd-update install
-root@f0:~ # freebsd-update reboot
+
root@f0:~ # freebsd-update fetch
+root@f0:~ # freebsd-update install
+root@f0:~ # freebsd-update reboot
 

 

 I also added the following entries for the three FreeBSD boxes to the /etc/hosts file:

@@ -281,11 +281,11 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
root@f0:~ # cat <<END >>/etc/hosts
-192.168.1.130 f0 f0.lan f0.lan.buetow.org
-192.168.1.131 f1 f1.lan f1.lan.buetow.org
-192.168.1.132 f2 f2.lan f2.lan.buetow.org
-END
+
root@f0:~ # cat <<END >>/etc/hosts
+192.168.1.130 f0 f0.lan f0.lan.buetow.org
+192.168.1.131 f1 f1.lan f1.lan.buetow.org
+192.168.1.132 f2 f2.lan f2.lan.buetow.org
+END
 

 

 
After install


@@ -296,7 +296,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
root@f0:~ # pkg install helix doas zfs-periodic uptimed
+
root@f0:~ # pkg install helix doas zfs-periodic uptimed
 

 

 
Helix editor


@@ -313,7 +313,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
root@f0:~ # cp /usr/local/etc/doas.conf.sample /usr/local/etc/doas.conf
+
root@f0:~ # cp /usr/local/etc/doas.conf.sample /usr/local/etc/doas.conf
 

 

 https://man.openbsd.org/doas

@@ -326,24 +326,24 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
root@f0:~ # sysrc daily_zfs_snapshot_enable=YES
-daily_zfs_snapshot_enable:  -> YES
-root@f0:~ # sysrc daily_zfs_snapshot_pools=zroot
-daily_zfs_snapshot_pools:  -> zroot
-root@f0:~ # sysrc daily_zfs_snapshot_keep=7
-daily_zfs_snapshot_keep:  -> 7
-root@f0:~ # sysrc weekly_zfs_snapshot_enable=YES
-weekly_zfs_snapshot_enable:  -> YES
-root@f0:~ # sysrc weekly_zfs_snapshot_pools=zroot
-weekly_zfs_snapshot_pools:  -> zroot
-root@f0:~ # sysrc weekly_zfs_snapshot_keep=5
-weekly_zfs_snapshot_keep:  -> 5
-root@f0:~ # sysrc monthly_zfs_snapshot_enable=YES
-monthly_zfs_snapshot_enable:  -> YES
-root@f0:~ # sysrc monthly_zfs_snapshot_pools=zroot
-monthly_zfs_snapshot_pools:  -> zroot
-root@f0:~ # sysrc monthly_zfs_snapshot_keep=6
-monthly_zfs_snapshot_keep: 2 -> 6
+
root@f0:~ # sysrc daily_zfs_snapshot_enable=YES
+daily_zfs_snapshot_enable:  -> YES
+root@f0:~ # sysrc daily_zfs_snapshot_pools=zroot
+daily_zfs_snapshot_pools:  -> zroot
+root@f0:~ # sysrc daily_zfs_snapshot_keep=7
+daily_zfs_snapshot_keep:  -> 7
+root@f0:~ # sysrc weekly_zfs_snapshot_enable=YES
+weekly_zfs_snapshot_enable:  -> YES
+root@f0:~ # sysrc weekly_zfs_snapshot_pools=zroot
+weekly_zfs_snapshot_pools:  -> zroot
+root@f0:~ # sysrc weekly_zfs_snapshot_keep=5
+weekly_zfs_snapshot_keep:  -> 5
+root@f0:~ # sysrc monthly_zfs_snapshot_enable=YES
+monthly_zfs_snapshot_enable:  -> YES
+root@f0:~ # sysrc monthly_zfs_snapshot_pools=zroot
+monthly_zfs_snapshot_pools:  -> zroot
+root@f0:~ # sysrc monthly_zfs_snapshot_keep=6
+monthly_zfs_snapshot_keep: 2 -> 6
 

 

 https://github.com/ross/zfs-periodic

@@ -356,9 +356,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
root@f0:~ # cp /usr/local/mimecast/etc/uptimed.conf-dist \
-  /usr/local/mimecast/etc/uptimed.conf 
-root@f0:~ # hx /usr/local/mimecast/etc/uptimed.conf
+
root@f0:~ # cp /usr/local/mimecast/etc/uptimed.conf-dist \
+  /usr/local/mimecast/etc/uptimed.conf 
+root@f0:~ # hx /usr/local/mimecast/etc/uptimed.conf
 

 

 In the Helix editor session, I changed LOG_MAXIMUM_ENTRIES to 0 to keep all uptime entries forever and not cut off at 50 (the default config). After that, I enabled and started uptimed:

@@ -367,8 +367,8 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
root@f0:~ # service uptimed enable
-root@f0:~ # service uptimed start
+
root@f0:~ # service uptimed enable
+root@f0:~ # service uptimed start
 

 

 To check the current uptime stats, I can now run uprecords:

@@ -377,15 +377,15 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
 root@f0:~ # uprecords
-     #               Uptime | System                                     Boot up
-----------------------------+---------------------------------------------------
-->   1     0 days, 00:07:34 | FreeBSD 14.1-RELEASE      Mon Dec  2 12:21:44 2024
-----------------------------+---------------------------------------------------
-NewRec     0 days, 00:07:33 | since                     Mon Dec  2 12:21:44 2024
-    up     0 days, 00:07:34 | since                     Mon Dec  2 12:21:44 2024
-  down     0 days, 00:00:00 | since                     Mon Dec  2 12:21:44 2024
-   %up              100.000 | since                     Mon Dec  2 12:21:44 2024
+
 root@f0:~ # uprecords
+     #               Uptime | System                                     Boot up
+----------------------------+---------------------------------------------------
+->   1     0 days, 00:07:34 | FreeBSD 14.1-RELEASE      Mon Dec  2 12:21:44 2024
+----------------------------+---------------------------------------------------
+NewRec     0 days, 00:07:33 | since                     Mon Dec  2 12:21:44 2024
+    up     0 days, 00:07:34 | since                     Mon Dec  2 12:21:44 2024
+  down     0 days, 00:00:00 | since                     Mon Dec  2 12:21:44 2024
+   %up              100.000 | since                     Mon Dec  2 12:21:44 2024
 

 

 This is how I track the uptimes for all of my host:

@@ -403,17 +403,17 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
paul@f0:~ % ifconfig re0
-re0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
-        options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
-        ether e8:ff:1e:d7:1c:ac
-        inet 192.168.1.130 netmask 0xffffff00 broadcast 192.168.1.255
-        inet6 fe80::eaff:1eff:fed7:1cac%re0 prefixlen 64 scopeid 0x1
-        inet6 fd22:c702:acb7:0:eaff:1eff:fed7:1cac prefixlen 64 detached autoconf
-        inet6 2a01:5a8:304:1d5c:eaff:1eff:fed7:1cac prefixlen 64 autoconf pltime 10800 vltime 14400
-        media: Ethernet autoselect (1000baseT <full-duplex>)
-        status: active
-        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
+
paul@f0:~ % ifconfig re0
+re0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
+        options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
+        ether e8:ff:1e:d7:1c:ac
+        inet 192.168.1.130 netmask 0xffffff00 broadcast 192.168.1.255
+        inet6 fe80::eaff:1eff:fed7:1cac%re0 prefixlen 64 scopeid 0x1
+        inet6 fd22:c702:acb7:0:eaff:1eff:fed7:1cac prefixlen 64 detached autoconf
+        inet6 2a01:5a8:304:1d5c:eaff:1eff:fed7:1cac prefixlen 64 autoconf pltime 10800 vltime 14400
+        media: Ethernet autoselect (1000baseT <full-duplex>)
+        status: active
+        nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
 

 

 
RAM


@@ -424,8 +424,8 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
paul@f0:~ % sysctl hw.physmem
-hw.physmem: 16902905856
+
paul@f0:~ % sysctl hw.physmem
+hw.physmem: 16902905856
 
 

 

@@ -437,11 +437,11 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
paul@f0:~ % sysctl dev.cpu | grep freq:
-dev.cpu.3.freq: 705
-dev.cpu.2.freq: 705
-dev.cpu.1.freq: 604
-dev.cpu.0.freq: 604
+
paul@f0:~ % sysctl dev.cpu | grep freq:
+dev.cpu.3.freq: 705
+dev.cpu.2.freq: 705
+dev.cpu.1.freq: 604
+dev.cpu.0.freq: 604
 

 

 
CPU throttling


@@ -452,14 +452,14 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
paul@f0:~ % doas pkg install ubench
-paul@f0:~ % rehash # For tcsh to find the newly installed command
-paul@f0:~ % ubench &
-paul@f0:~ % sysctl dev.cpu | grep freq:
-dev.cpu.3.freq: 2922
-dev.cpu.2.freq: 2922
-dev.cpu.1.freq: 2923
-dev.cpu.0.freq: 2922
+
paul@f0:~ % doas pkg install ubench
+paul@f0:~ % rehash # For tcsh to find the newly installed command
+paul@f0:~ % ubench &
+paul@f0:~ % sysctl dev.cpu | grep freq:
+dev.cpu.3.freq: 2922
+dev.cpu.2.freq: 2922
+dev.cpu.1.freq: 2923
+dev.cpu.0.freq: 2922
 

 

 Idle, all three Beelinks plus the switch consumed 26.2W. But with ubench stressing all the CPUs, it went up to 38.8W.

@@ -910,7 +910,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
declare -xr HTML_THEME_DIR=./extras/html/themes/simple
+
declare -xr HTML_THEME_DIR=./extras/html/themes/simple
 

 

 To customize the theme or create your own, simply copy the theme directory and modify it as needed. This makes it also much easier to switch between layouts.

@@ -1431,11 +1431,11 @@ jgs \\`_..---.Y.---.._`//
 

 

-
Got sets you up for a challenge


+
God sets you up for a challenge


 

 Gods set you up for a challenge to see how resilient you are. Is getting angry worth the price? If you stay calm then you can find the optimal workaround for the obstacle. Stay calm even with big setbacks. Practice minimalism of negative emotions.

 

@@ -1535,38 +1535,38 @@ WHOA!! 	     ( o.o )
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% traceroute bad.horse
-traceroute to bad.horse (162.252.205.157), 30 hops max, 60 byte packets
- 1  dsldevice.lan (192.168.1.1)  5.712 ms  5.800 ms  6.466 ms
- 2  87-243-116-2.ip.btc-net.bg (87.243.116.2)  8.017 ms  7.506 ms  8.432 ms
- 3  * * *
- 4  * * *
- 5  xe-1-2-0.mpr1.fra4.de.above.net (80.81.194.26)  39.952 ms  40.155 ms  40.139 ms
- 6  ae12.cs1.fra6.de.eth.zayo.com (64.125.26.172)  128.014 ms * *
- 7  * * *
- 8  * * *
- 9  ae10.cs1.lhr15.uk.eth.zayo.com (64.125.29.17)  120.625 ms  121.117 ms  121.050 ms
-10  * * *
-11  * * *
-12  * * *
-13  ae5.mpr1.tor3.ca.zip.zayo.com (64.125.23.118)  192.605 ms  205.741 ms  203.607 ms
-14  64.124.217.237.IDIA-265104-ZYO.zip.zayo.com (64.124.217.237)  204.673 ms  134.674 ms  131.442 ms
-15  * * *
-16  67.223.96.90 (67.223.96.90)  128.245 ms  127.844 ms  127.843 ms
-17  bad.horse (162.252.205.130)  128.194 ms  122.854 ms  121.786 ms
-18  bad.horse (162.252.205.131)  128.831 ms  128.341 ms  186.559 ms
-19  bad.horse (162.252.205.132)  185.716 ms  180.121 ms  180.042 ms
-20  bad.horse (162.252.205.133)  203.170 ms  203.076 ms  203.168 ms
-21  he.rides.across.the.nation (162.252.205.134)  203.115 ms  141.830 ms  141.799 ms
-22  the.thoroughbred.of.sin (162.252.205.135)  147.965 ms  148.230 ms  170.478 ms
-23  he.got.the.application (162.252.205.136)  165.161 ms  164.939 ms  159.085 ms
-24  that.you.just.sent.in (162.252.205.137)  162.310 ms  158.569 ms  158.896 ms
-25  it.needs.evaluation (162.252.205.138)  162.927 ms  163.046 ms  163.085 ms
-26  so.let.the.games.begin (162.252.205.139)  233.363 ms  233.545 ms  233.317 ms
-27  a.heinous.crime (162.252.205.140)  237.745 ms  233.614 ms  233.740 ms
-28  a.show.of.force (162.252.205.141)  237.974 ms  176.085 ms  175.927 ms
-29  a.murder.would.be.nice.of.course (162.252.205.142)  181.838 ms  181.858 ms  182.059 ms
-30  bad.horse (162.252.205.143)  187.731 ms  187.416 ms  187.532 ms
+
% traceroute bad.horse
+traceroute to bad.horse (162.252.205.157), 30 hops max, 60 byte packets
+ 1  dsldevice.lan (192.168.1.1)  5.712 ms  5.800 ms  6.466 ms
+ 2  87-243-116-2.ip.btc-net.bg (87.243.116.2)  8.017 ms  7.506 ms  8.432 ms
+ 3  * * *
+ 4  * * *
+ 5  xe-1-2-0.mpr1.fra4.de.above.net (80.81.194.26)  39.952 ms  40.155 ms  40.139 ms
+ 6  ae12.cs1.fra6.de.eth.zayo.com (64.125.26.172)  128.014 ms * *
+ 7  * * *
+ 8  * * *
+ 9  ae10.cs1.lhr15.uk.eth.zayo.com (64.125.29.17)  120.625 ms  121.117 ms  121.050 ms
+10  * * *
+11  * * *
+12  * * *
+13  ae5.mpr1.tor3.ca.zip.zayo.com (64.125.23.118)  192.605 ms  205.741 ms  203.607 ms
+14  64.124.217.237.IDIA-265104-ZYO.zip.zayo.com (64.124.217.237)  204.673 ms  134.674 ms  131.442 ms
+15  * * *
+16  67.223.96.90 (67.223.96.90)  128.245 ms  127.844 ms  127.843 ms
+17  bad.horse (162.252.205.130)  128.194 ms  122.854 ms  121.786 ms
+18  bad.horse (162.252.205.131)  128.831 ms  128.341 ms  186.559 ms
+19  bad.horse (162.252.205.132)  185.716 ms  180.121 ms  180.042 ms
+20  bad.horse (162.252.205.133)  203.170 ms  203.076 ms  203.168 ms
+21  he.rides.across.the.nation (162.252.205.134)  203.115 ms  141.830 ms  141.799 ms
+22  the.thoroughbred.of.sin (162.252.205.135)  147.965 ms  148.230 ms  170.478 ms
+23  he.got.the.application (162.252.205.136)  165.161 ms  164.939 ms  159.085 ms
+24  that.you.just.sent.in (162.252.205.137)  162.310 ms  158.569 ms  158.896 ms
+25  it.needs.evaluation (162.252.205.138)  162.927 ms  163.046 ms  163.085 ms
+26  so.let.the.games.begin (162.252.205.139)  233.363 ms  233.545 ms  233.317 ms
+27  a.heinous.crime (162.252.205.140)  237.745 ms  233.614 ms  233.740 ms
+28  a.show.of.force (162.252.205.141)  237.974 ms  176.085 ms  175.927 ms
+29  a.murder.would.be.nice.of.course (162.252.205.142)  181.838 ms  181.858 ms  182.059 ms
+30  bad.horse (162.252.205.143)  187.731 ms  187.416 ms  187.532 ms
 

 

 
2. ASCII cinema


@@ -1594,20 +1594,20 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#include <stdio.h>
+
#include <stdio.h>
 
-int main(void) {
-  int array[5] = { 1, 2, 3, 4, 5 };
+int main(void) {
+  int array[5] = { 1, 2, 3, 4, 5 };
 
-  for (int i = 0; i < 5; i++)
-    printf("%d\n", array[i]);
+  for (int i = 0; i < 5; i++)
+    printf("%d\n", array[i]);
 
-  for (int i = 0; i < 5; i++)
-    printf("%d\n", i[array]);
+  for (int i = 0; i < 5; i++)
+    printf("%d\n", i[array]);
 
-  for (int i = 0; i < 5; i++)
-    printf("%d\n", *(i + array));
-}
+  for (int i = 0; i < 5; i++)
+    printf("%d\n", *(i + array));
+}
 

 

 
5. Variables with prefix $


@@ -1618,20 +1618,20 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#include <stdio.h>
+
#include <stdio.h>
 
-int main(void) {
-  int $array[5] = { 1, 2, 3, 4, 5 };
+int main(void) {
+  int $array[5] = { 1, 2, 3, 4, 5 };
 
-  for (int $i = 0; $i < 5; $i++)
-    printf("%d\n", $array[$i]);
+  for (int $i = 0; $i < 5; $i++)
+    printf("%d\n", $array[$i]);
 
-  for (int $i = 0; $i < 5; $i++)
-    printf("%d\n", $i[$array]);
+  for (int $i = 0; $i < 5; $i++)
+    printf("%d\n", $i[$array]);
 
-  for (int $i = 0; $i < 5; $i++)
-    printf("%d\n", *($i + $array));
-}
+  for (int $i = 0; $i < 5; $i++)
+    printf("%d\n", *($i + $array));
+}
 

 

 
6. Object oriented shell scripts using ksh


@@ -1642,40 +1642,40 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/ksh93
- 
-typeset -T Point_t=(
-    integer -h 'x coordinate' x=0
-    integer -h 'y coordinate' y=0
-    typeset -h 'point color'  color="red"
-
-    function getcolor {
-        print -r ${_.color}
-    }
-
-    function setcolor {
-        _.color=$1
-    }
-
-    setxy() {
-        _.x=$1; _.y=$2
-    }
-
-    getxy() {
-        print -r "(${_.x},${_.y})"
-    }
-)
- 
-Point_t point
- 
-echo "Initial coordinates are (${point.x},${point.y}). Color is ${point.color}"
- 
-point.setxy 5 6
-point.setcolor blue
- 
-echo "New coordinates are ${point.getxy}. Color is ${point.getcolor}"
- 
-exit 0
+
#!/usr/bin/ksh93
+ 
+typeset -T Point_t=(
+    integer -h 'x coordinate' x=0
+    integer -h 'y coordinate' y=0
+    typeset -h 'point color'  color="red"
+
+    function getcolor {
+        print -r ${_.color}
+    }
+
+    function setcolor {
+        _.color=$1
+    }
+
+    setxy() {
+        _.x=$1; _.y=$2
+    }
+
+    getxy() {
+        print -r "(${_.x},${_.y})"
+    }
+)
+ 
+Point_t point
+ 
+echo "Initial coordinates are (${point.x},${point.y}). Color is ${point.color}"
+ 
+point.setxy 5 6
+point.setcolor blue
+ 
+echo "New coordinates are ${point.getxy}. Color is ${point.getcolor}"
+ 
+exit 0
 

 

 Using types to create object oriented Korn shell 93 scripts

@@ -1688,18 +1688,18 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
package main
+
package main
 
-import "fmt"
+import "fmt"
 
-func main() {
-	var i int
-	f := func() *int {
-		return &i
-	}
-	*f()++
-	fmt.Println(i)
-}
+func main() {
+	var i int
+	f := func() *int {
+		return &i
+	}
+	*f()++
+	fmt.Println(i)
+}
 

 

 Go playground

@@ -1950,13 +1950,13 @@ jgs   `-=========-`()
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
alias tm=tmux
-alias tl='tmux list-sessions'
-alias tn=tmux::new
-alias ta=tmux::attach
-alias tx=tmux::remote
-alias ts=tmux::search
-alias tssh=tmux::cluster_ssh
+
alias tm=tmux
+alias tl='tmux list-sessions'
+alias tn=tmux::new
+alias ta=tmux::attach
+alias tx=tmux::remote
+alias ts=tmux::search
+alias tssh=tmux::cluster_ssh
 

 

 Note all tmux::...; those are custom shell functions doing certain things, and they aren't part of the Tmux distribution. But let's run through every aliases one by one. 

@@ -1971,23 +1971,23 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
# Create new session and if alread exists attach to it
-tmux::new () {
-    readonly session=$1
-    local date=date
-    if where gdate &>/dev/null; then
-        date=gdate
-    fi
-
-    tmux::cleanup_default
-    if [ -z "$session" ]; then
-        tmux::new T$($date +%s)
-    else
-        tmux new-session -d -s $session
-        tmux -2 attach-session -t $session || tmux -2 switch-client -t $session
-    fi
-}
-alias tn=tmux::new
+
# Create new session and if alread exists attach to it
+tmux::new () {
+    readonly session=$1
+    local date=date
+    if where gdate &>/dev/null; then
+        date=gdate
+    fi
+
+    tmux::cleanup_default
+    if [ -z "$session" ]; then
+        tmux::new T$($date +%s)
+    else
+        tmux new-session -d -s $session
+        tmux -2 attach-session -t $session || tmux -2 switch-client -t $session
+    fi
+}
+alias tn=tmux::new
 

 

 There is a lot going on here. Let's have a detailed look at what it is doing. As a note, the function relies on GNU Date, so MacOS is looking for the gdate commands to be available. Otherwise, it will fall back to date. You need to install GNU Date for Mac, as it isn't installed by default there. As I use Fedora Linux on my personal Laptop and a MacBook for work, I have to make it work for both.

@@ -2002,14 +2002,14 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
tmux::cleanup_default () {
-    local s
-    tmux list-sessions | grep '^T.*: ' | grep -F -v attached |
-    cut -d: -f1 | while read -r s; do
-        echo "Killing $s"
-        tmux kill-session -t "$s"
-    done
-}
+
tmux::cleanup_default () {
+    local s
+    tmux list-sessions | grep '^T.*: ' | grep -F -v attached |
+    cut -d: -f1 | while read -r s; do
+        echo "Killing $s"
+        tmux kill-session -t "$s"
+    done
+}
 

 

 The cleanup function kills all open Tmux sessions that haven't been renamed properly yet—but only if they aren't attached (e.g., don't run in the foreground in any terminal). Cleaning them up automatically keeps my Tmux sessions as neat and tidy as possible. 

@@ -2026,16 +2026,16 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
tmux::attach () {
-    readonly session=$1
-
-    if [ -z "$session" ]; then
-        tmux attach-session || tmux::new
-    else
-        tmux attach-session -t $session || tmux::new $session
-    fi
-}
-alias ta=tmux::attach
+
tmux::attach () {
+    readonly session=$1
+
+    if [ -z "$session" ]; then
+        tmux attach-session || tmux::new
+    else
+        tmux attach-session -t $session || tmux::new $session
+    fi
+}
+alias ta=tmux::attach
 

 

 If no session is specified (as the argument of the function), it will try to attach to the first open session. If no Tmux server is running, it will create a new one with tmux::new. Otherwise, with a session name given as the argument, it will attach to it. If unsuccessful (e.g., the session doesn't exist), it will be created and attached to.

@@ -2048,12 +2048,12 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
tmux::remote () {
-    readonly server=$1
-    tmux new -s $server "ssh -t $server 'tmux attach-session || tmux'" || \
-        tmux attach-session -d -t $server
-}
-alias tr=tmux::remote
+
tmux::remote () {
+    readonly server=$1
+    tmux new -s $server "ssh -t $server 'tmux attach-session || tmux'" || \
+        tmux attach-session -d -t $server
+}
+alias tr=tmux::remote
 

 

 
Change of the Tmux prefix for better nesting


@@ -2076,15 +2076,15 @@ set-option -g prefix C-g
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
tmux::search () {
-    local -r session=$(tmux list-sessions | fzf | cut -d: -f1)
-    if [ -z "$TMUX" ]; then
-        tmux attach-session -t $session
-    else
-        tmux switch -t $session
-    fi
-}
-alias ts=tmux::search
+
tmux::search () {
+    local -r session=$(tmux list-sessions | fzf | cut -d: -f1)
+    if [ -z "$TMUX" ]; then
+        tmux attach-session -t $session
+    else
+        tmux switch -t $session
+    fi
+}
+alias ts=tmux::search
 

 

 All it does is list all currently open sessions in fzf, where one of them can be searched and selected through fuzzy find, and then either switch (if already inside a session) to the other session or attach to the other session (if not yet in Tmux).

@@ -2111,15 +2111,15 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
tmux::cluster_ssh () {
-    if [ -f "$1" ]; then
-        tmux::tssh_from_file $1
-        return
-    fi
+
tmux::cluster_ssh () {
+    if [ -f "$1" ]; then
+        tmux::tssh_from_file $1
+        return
+    fi
 
-    tmux::tssh_from_argument $@
-}
-alias tssh=tmux::cluster_ssh
+    tmux::tssh_from_argument $@
+}
+alias tssh=tmux::cluster_ssh
 

 

 This function is just a wrapper around the more complex tmux::tssh_from_file and tmux::tssh_from_argument functions, as you have learned already. Most of the magic happens there.

@@ -2132,23 +2132,23 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
tmux::tssh_from_argument () {
-    local -r session=$1; shift
-    local first_server=$1; shift
-
-    tmux new-session -d -s $session "ssh -t $first_server"
-    if ! tmux list-session | grep "^$session:"; then
-        echo "Could not create session $session"
-        return 2
-    fi
-
-    for server in "${@[@]}"; do
-        tmux split-window -t $session "tmux select-layout tiled; ssh -t $server"
-    done
-
-    tmux setw -t $session synchronize-panes on
-    tmux -2 attach-session -t $session | tmux -2 switch-client -t $session
-}
+
tmux::tssh_from_argument () {
+    local -r session=$1; shift
+    local first_server=$1; shift
+
+    tmux new-session -d -s $session "ssh -t $first_server"
+    if ! tmux list-session | grep "^$session:"; then
+        echo "Could not create session $session"
+        return 2
+    fi
+
+    for server in "${@[@]}"; do
+        tmux split-window -t $session "tmux select-layout tiled; ssh -t $server"
+    done
+
+    tmux setw -t $session synchronize-panes on
+    tmux -2 attach-session -t $session | tmux -2 switch-client -t $session
+}
 

 

 It expects at least two arguments. The first argument is the session name to create for the clustered SSH session. All other arguments are server hostnames or FQDNs to which to connect. The first one is used to make the initial session. All remaining ones are added to that session with tmux split-window -t $session.... At the end, we enable synchronized panes by default, so whenever you type, the commands will be sent to every SSH connection, thus allowing the neat ClusterSSH feature to run commands on multiple servers simultaneously. Once done, we attach (or switch, if already in Tmux) to it.

@@ -2168,12 +2168,12 @@ bind-key P setw synchronize-panes on
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
tmux::tssh_from_file () {
-    local -r serverlist=$1; shift
-    local -r session=$(basename $serverlist | cut -d. -f1)
+
tmux::tssh_from_file () {
+    local -r serverlist=$1; shift
+    local -r session=$(basename $serverlist | cut -d. -f1)
 
-    tmux::tssh_from_argument $session $(awk '{ print $1} ' $serverlist | sed 's/.lan./.lan/g')
-}
+    tmux::tssh_from_argument $session $(awk '{ print $1} ' $serverlist | sed 's/.lan./.lan/g')
+}
 

 

 
tssh examples


@@ -2521,12 +2521,12 @@ Art by Laura Brown
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
Cluster :UK, :uk01 do
-  Customer.C1A1.segments.volumes.each do |volume|
-    puts volume.usage_stats
-    volume.move_off! if volume.over_subscribed?
-  end
-end
+
Cluster :UK, :uk01 do
+  Customer.C1A1.segments.volumes.each do |volume|
+    puts volume.usage_stats
+    volume.move_off! if volume.over_subscribed?
+  end
+end
 

 

 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.

@@ -2900,38 +2900,38 @@ _____|_:_:_|  (o)-(o)  |_:_:_|--'`-.     ,--. ksh under-water (((\'/
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/bin/ksh
-
-ZONES_DIR=/var/nsd/zones/master/
-DEFAULT_MASTER=fishfinger.buetow.org
-DEFAULT_STANDBY=blowfish.buetow.org
-
-determine_master_and_standby () {
-    local master=$DEFAULT_MASTER
-    local standby=$DEFAULT_STANDBY
-
-    .
-    .
-    .
-    
-    local -i health_ok=1
-    if ! ftp -4 -o - https://$master/index.txt | grep -q "Welcome to $master"; then
-        echo "https://$master/index.txt IPv4 health check failed"
-        health_ok=0
-    elif ! ftp -6 -o - https://$master/index.txt | grep -q "Welcome to $master"; then
-        echo "https://$master/index.txt IPv6 health check failed"
-        health_ok=0
-    fi
-    if [ $health_ok -eq 0 ]; then
-        local tmp=$master
-        master=$standby
-        standby=$tmp
-    fi
-
-    .
-    .
-    .
-}
+
#!/bin/ksh
+
+ZONES_DIR=/var/nsd/zones/master/
+DEFAULT_MASTER=fishfinger.buetow.org
+DEFAULT_STANDBY=blowfish.buetow.org
+
+determine_master_and_standby () {
+    local master=$DEFAULT_MASTER
+    local standby=$DEFAULT_STANDBY
+
+    .
+    .
+    .
+    
+    local -i health_ok=1
+    if ! ftp -4 -o - https://$master/index.txt | grep -q "Welcome to $master"; then
+        echo "https://$master/index.txt IPv4 health check failed"
+        health_ok=0
+    elif ! ftp -6 -o - https://$master/index.txt | grep -q "Welcome to $master"; then
+        echo "https://$master/index.txt IPv6 health check failed"
+        health_ok=0
+    fi
+    if [ $health_ok -eq 0 ]; then
+        local tmp=$master
+        master=$standby
+        standby=$tmp
+    fi
+
+    .
+    .
+    .
+}
 

 

 The failover scripts looks for the  ; Enable failover string in the DNS zone files and swaps the A and AAAA records of the DNS entries accordingly:

@@ -2940,42 +2940,42 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
fishfinger$ grep failover /var/nsd/zones/master/foo.zone.zone
-        300 IN A 46.23.94.99 ; Enable failover
-        300 IN AAAA 2a03:6000:6f67:624::99 ; Enable failover
-www     300 IN A 46.23.94.99 ; Enable failover
-www     300 IN AAAA 2a03:6000:6f67:624::99 ; Enable failover
-standby  300 IN A 23.88.35.144 ; Enable failover
-standby  300 IN AAAA 2a01:4f8:c17:20f1::42 ; Enable failover
+
fishfinger$ grep failover /var/nsd/zones/master/foo.zone.zone
+        300 IN A 46.23.94.99 ; Enable failover
+        300 IN AAAA 2a03:6000:6f67:624::99 ; Enable failover
+www     300 IN A 46.23.94.99 ; Enable failover
+www     300 IN AAAA 2a03:6000:6f67:624::99 ; Enable failover
+standby  300 IN A 23.88.35.144 ; Enable failover
+standby  300 IN AAAA 2a01:4f8:c17:20f1::42 ; Enable failover
 

 

 
-
transform () {
-  sed -E '
-	/IN A .*; Enable failover/ {
-	    /^standby/! {
-	        s/^(.*) 300 IN A (.*) ; (.*)/\1 300 IN A '$(cat /var/nsd/run/master_a)' ; \3/;
-	    }
-	    /^standby/ {
-	        s/^(.*) 300 IN A (.*) ; (.*)/\1 300 IN A '$(cat /var/nsd/run/standby_a)' ; \3/;
-	    }
-	}
-	/IN AAAA .*; Enable failover/ {
-	    /^standby/! {
-	        s/^(.*) 300 IN AAAA (.*) ; (.*)/\1 300 IN AAAA '$(cat /var/nsd/run/master_aaaa)' ; \3/;
-	    }
-	    /^standby/ {
-	        s/^(.*) 300 IN AAAA (.*) ; (.*)/\1 300 IN AAAA '$(cat /var/nsd/run/standby_aaaa)' ; \3/;
-	    }
-	}
-	/ ; serial/ {
-	    s/^( +) ([0-9]+) .*; (.*)/\1 '$(date +%s)' ; \3/;
-	}
-  '
-}
+
transform () {
+  sed -E '
+	/IN A .*; Enable failover/ {
+	    /^standby/! {
+	        s/^(.*) 300 IN A (.*) ; (.*)/\1 300 IN A '$(cat /var/nsd/run/master_a)' ; \3/;
+	    }
+	    /^standby/ {
+	        s/^(.*) 300 IN A (.*) ; (.*)/\1 300 IN A '$(cat /var/nsd/run/standby_a)' ; \3/;
+	    }
+	}
+	/IN AAAA .*; Enable failover/ {
+	    /^standby/! {
+	        s/^(.*) 300 IN AAAA (.*) ; (.*)/\1 300 IN AAAA '$(cat /var/nsd/run/master_aaaa)' ; \3/;
+	    }
+	    /^standby/ {
+	        s/^(.*) 300 IN AAAA (.*) ; (.*)/\1 300 IN AAAA '$(cat /var/nsd/run/standby_aaaa)' ; \3/;
+	    }
+	}
+	/ ; serial/ {
+	    s/^( +) ([0-9]+) .*; (.*)/\1 '$(date +%s)' ; \3/;
+	}
+  '
+}
 

 

 After the failover, the script reloads nsd and performs a sanity check to see if DNS still works. If not, a rollback will be performed:

@@ -2984,48 +2984,48 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#! Race condition !#
-   
-if [ -f $zone_file.bak ]; then
-    mv $zone_file.bak $zone_file
-fi
-
-cat $zone_file | transform > $zone_file.new.tmp 
-
-grep -v ' ; serial' $zone_file.new.tmp > $zone_file.new.noserial.tmp
-grep -v ' ; serial' $zone_file > $zone_file.old.noserial.tmp
-
-echo "Has zone $zone_file changed?"
-if diff -u $zone_file.old.noserial.tmp $zone_file.new.noserial.tmp; then
-    echo "The zone $zone_file hasn't changed"
-    rm $zone_file.*.tmp
-    return 0
-fi
-
-cp $zone_file $zone_file.bak
-mv $zone_file.new.tmp $zone_file
-rm $zone_file.*.tmp
-echo "Reloading nsd"
-nsd-control reload
-
-if ! zone_is_ok $zone; then
-    echo "Rolling back $zone_file changes"
-    cp $zone_file $zone_file.invalid
-    mv $zone_file.bak $zone_file
-    echo "Reloading nsd"
-    nsd-control reload
-    zone_is_ok $zone
-    return 3
-fi
-
-for cleanup in invalid bak; do
-    if [ -f $zone_file.$cleanup ]; then
-        rm $zone_file.$cleanup
-    fi
-done
-
-echo "Failover of zone $zone to $MASTER completed"
-return 1
+
#! Race condition !#
+   
+if [ -f $zone_file.bak ]; then
+    mv $zone_file.bak $zone_file
+fi
+
+cat $zone_file | transform > $zone_file.new.tmp 
+
+grep -v ' ; serial' $zone_file.new.tmp > $zone_file.new.noserial.tmp
+grep -v ' ; serial' $zone_file > $zone_file.old.noserial.tmp
+
+echo "Has zone $zone_file changed?"
+if diff -u $zone_file.old.noserial.tmp $zone_file.new.noserial.tmp; then
+    echo "The zone $zone_file hasn't changed"
+    rm $zone_file.*.tmp
+    return 0
+fi
+
+cp $zone_file $zone_file.bak
+mv $zone_file.new.tmp $zone_file
+rm $zone_file.*.tmp
+echo "Reloading nsd"
+nsd-control reload
+
+if ! zone_is_ok $zone; then
+    echo "Rolling back $zone_file changes"
+    cp $zone_file $zone_file.invalid
+    mv $zone_file.bak $zone_file
+    echo "Reloading nsd"
+    nsd-control reload
+    zone_is_ok $zone
+    return 3
+fi
+
+for cleanup in invalid bak; do
+    if [ -f $zone_file.$cleanup ]; then
+        rm $zone_file.$cleanup
+    fi
+done
+
+echo "Failover of zone $zone to $MASTER completed"
+return 1
 

 

 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.

@@ -3082,13 +3082,13 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
# Weekly auto-failover for Let's Encrypt automation
-local -i -r week_of_the_year=$(date +%U)
-if [ $(( week_of_the_year % 2 )) -eq 0 ]; then
-    local tmp=$master
-    master=$standby
-    standby=$tmp
-fi
+
# Weekly auto-failover for Let's Encrypt automation
+local -i -r week_of_the_year=$(date +%U)
+if [ $(( week_of_the_year % 2 )) -eq 0 ]; then
+    local tmp=$master
+    master=$standby
+    standby=$tmp
+fi
 

 

 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.

@@ -3462,8 +3462,8 @@ SSFISHKISSFISHKISSFISHKISSFISHKIS    SFIS
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
$ doas installboot sd0 # Update the bootloader (not for every upgrade required)
-$ doas sysupgrade # Update all binaries (including Kernel)
+
$ doas installboot sd0 # Update the bootloader (not for every upgrade required)
+$ doas sysupgrade # Update all binaries (including Kernel)
 

 

 sysupgrade downloaded and upgraded to the next release and rebooted the system. After the reboot, I run:

@@ -3472,9 +3472,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
$ doas sysmerge # Update system configuration files
-$ doas pkg_add -u # Update all packages
-$ doas reboot # Just in case, reboot one more time
+
$ doas sysmerge # Update system configuration files
+$ doas pkg_add -u # Update all packages
+$ doas reboot # Just in case, reboot one more time
 

 

 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.

@@ -3640,24 +3640,24 @@ jgs^^^^^^^`^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-log () {
-    local -r level="$1"; shift
-    local -r message="$1"; shift
-    local -i pid="$$"
+log () {
+    local -r level="$1"; shift
+    local -r message="$1"; shift
+    local -i pid="$$"
 
-    local -r callee=${FUNCNAME[1]}
-    local -r stamp=$(date +%Y%m%d-%H%M%S)
+    local -r callee=${FUNCNAME[1]}
+    local -r stamp=$(date +%Y%m%d-%H%M%S)
 
-    echo "$level|$stamp|$pid|$callee|$message" >&2
-}
+    echo "$level|$stamp|$pid|$callee|$message" >&2
+}
 
-at_home_friday_evening () {
-    log INFO 'One Peperoni Pizza, please'
-}
+at_home_friday_evening () {
+    log INFO 'One Peperoni Pizza, please'
+}
 
-at_home_friday_evening
+at_home_friday_evening
 

 

 The output is as follows:

@@ -3666,8 +3666,8 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
❯ ./logexample.sh
-INFO|20231210-082732|123002|at_home_friday_evening|One Peperoni Pizza, please
+
❯ ./logexample.sh
+INFO|20231210-082732|123002|at_home_friday_evening|One Peperoni Pizza, please
 

 

 
:(){ :|:& };:


@@ -3701,18 +3701,18 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-outer() {
-  inner() {
-    echo 'Intel inside!'
-  }
-  inner
-}
+outer() {
+  inner() {
+    echo 'Intel inside!'
+  }
+  inner
+}
 
-inner
-outer
-inner
+inner
+outer
+inner
 

 

 And let's execute it:

@@ -3730,26 +3730,26 @@ Intel inside!
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-outer1() {
-  inner() {
-    echo 'Intel inside!'
-  }
-  inner
-}
+outer1() {
+  inner() {
+    echo 'Intel inside!'
+  }
+  inner
+}
 
-outer2() {
-  inner() {
-    echo 'Wintel inside!'
-  }
-  inner
-}
+outer2() {
+  inner() {
+    echo 'Wintel inside!'
+  }
+  inner
+}
 
-outer1
-inner
-outer2
-inner
+outer1
+inner
+outer2
+inner
 

 

 And let's run it:

@@ -3770,14 +3770,14 @@ Wintel inside!
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-some_expensive_operations() {
-  echo "Doing expensive operations with '$1' from pid $$"
-}
+some_expensive_operations() {
+  echo "Doing expensive operations with '$1' from pid $$"
+}
 
-for i in {0..9}; do echo $i; done \
-  | xargs -P10 -I{} bash -c 'some_expensive_operations "{}"'
+for i in {0..9}; do echo $i; done \
+  | xargs -P10 -I{} bash -c 'some_expensive_operations "{}"'
 

 

 We try here to run ten parallel processes; each of them should run the some_expensive_operations function with a different argument. The arguments are provided to xargs through STDIN one per line. When executed, we get this:

@@ -3802,15 +3802,15 @@ bash: line 1: some_expensive_operations: command not found
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-some_expensive_operations() {
-  echo "Doing expensive operations with '$1' from pid $$"
-}
-export -f some_expensive_operations
+some_expensive_operations() {
+  echo "Doing expensive operations with '$1' from pid $$"
+}
+export -f some_expensive_operations
 
-for i in {0..9}; do echo $i; done \
-  | xargs -P10 -I{} bash -c 'some_expensive_operations "{}"'
+for i in {0..9}; do echo $i; done \
+  | xargs -P10 -I{} bash -c 'some_expensive_operations "{}"'
 

 

 When we run this now, we get:

@@ -3835,19 +3835,19 @@ Doing expensive operations with '9' from pid 132840
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-some_other_function() {
-  echo "$1"
-}
+some_other_function() {
+  echo "$1"
+}
 
-some_expensive_operations() {
-  some_other_function "Doing expensive operations with '$1' from pid $$"
-}
-export -f some_expensive_operations
+some_expensive_operations() {
+  some_other_function "Doing expensive operations with '$1' from pid $$"
+}
+export -f some_expensive_operations
 
-for i in {0..9}; do echo $i; done \
-  | xargs -P10 -I{} bash -c 'some_expensive_operations "{}"'
+for i in {0..9}; do echo $i; done \
+  | xargs -P10 -I{} bash -c 'some_expensive_operations "{}"'
 

 

 ... because some_other_function isn't exported! You will also need to add an export -f some_other_function!

@@ -3860,22 +3860,22 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-foo() {
-  local foo=bar # Declare local/dynamic variable
-  bar
-  echo "$foo"
-}
+foo() {
+  local foo=bar # Declare local/dynamic variable
+  bar
+  echo "$foo"
+}
 
-bar() {
-  echo "$foo"
-  foo=baz
-}
+bar() {
+  echo "$foo"
+  foo=baz
+}
 
-foo=foo # Declare global variable
-foo # Call function foo
-echo "$foo"
+foo=foo # Declare global variable
+foo # Call function foo
+echo "$foo"
 

 

 Let's pause a minute. What do you think the output would be?

@@ -3900,34 +3900,34 @@ foo
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-declare -r foo=foo
-declare -r bar=bar
+declare -r foo=foo
+declare -r bar=bar
 
-if [ "$foo" = foo ]; then
-  if [ "$bar" = bar ]; then
-    echo ok1
-  fi
-fi
+if [ "$foo" = foo ]; then
+  if [ "$bar" = bar ]; then
+    echo ok1
+  fi
+fi
 
-if [ "$foo" = foo ] && [ "$bar" == bar ]; then
-  echo ok2a
-fi
+if [ "$foo" = foo ] && [ "$bar" == bar ]; then
+  echo ok2a
+fi
 
-[ "$foo" = foo ] && [ "$bar" == bar ] && echo ok2b
+[ "$foo" = foo ] && [ "$bar" == bar ] && echo ok2b
 
-if [[ "$foo" = foo && "$bar" == bar ]]; then
-  echo ok3a
-fi
+if [[ "$foo" = foo && "$bar" == bar ]]; then
+  echo ok3a
+fi
 
- [[ "$foo" = foo && "$bar" == bar ]] && echo ok3b
+ [[ "$foo" = foo && "$bar" == bar ]] && echo ok3b
 
-if test "$foo" = foo && test "$bar" = bar; then
-  echo ok4a
-fi
+if test "$foo" = foo && test "$bar" = bar; then
+  echo ok4a
+fi
 
-test "$foo" = foo && test "$bar" = bar && echo ok4b
+test "$foo" = foo && test "$bar" = bar && echo ok4b
 

 

 The output we get is:

@@ -3951,18 +3951,18 @@ ok4b
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-# Single line comment
+# Single line comment
 
-# These are two single line
-# comments one after another
+# These are two single line
+# comments one after another
 
-: <<COMMENT
-This is another way a
-multi line comment
-could be written!
-COMMENT
+: <<COMMENT
+This is another way a
+multi line comment
+could be written!
+COMMENT
 

 

 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!

@@ -3975,11 +3975,11 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
#!/usr/bin/env bash
+
#!/usr/bin/env bash
 
-echo foo
-echo echo baz >> $0
-echo bar
+echo foo
+echo echo baz >> $0
+echo bar
 

 

 When it is run, it will do:

@@ -4355,42 +4355,42 @@ photoalbum makemake
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% photoalbum makemake
-You may now customize ./photoalbumrc and run make
-
-% cat Makefile
-all:
-	photoalbum generate photoalbumrc
-clean:
-	photoalbum clean photoalbumrc
-
-% cat photoalbumrc
-# The title of the photoalbum
-TITLE='A simple Photoalbum'
-
-# Thumbnail height geometry
-THUMBHEIGHT=300
-# Normal geometry height (when viewing photo). Uncomment, to keep original size.
-HEIGHT=1200
-# Max previews per page.
-MAXPREVIEWS=40
-# Randomly shuffle all previews.
-# SHUFFLE=yes
-
-# Diverse directories, need to be full paths, not relative!
-INCOMING_DIR=$(pwd)/incoming
-DIST_DIR=$(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
-TARBALL_INCLUDE=yes
-TARBALL_SUFFIX=.tar
-TAR_OPTS='-c'
-
-# Some debugging options
-#set -e
-#set -x
+
% photoalbum makemake
+You may now customize ./photoalbumrc and run make
+
+% cat Makefile
+all:
+	photoalbum generate photoalbumrc
+clean:
+	photoalbum clean photoalbumrc
+
+% cat photoalbumrc
+# The title of the photoalbum
+TITLE='A simple Photoalbum'
+
+# Thumbnail height geometry
+THUMBHEIGHT=300
+# Normal geometry height (when viewing photo). Uncomment, to keep original size.
+HEIGHT=1200
+# Max previews per page.
+MAXPREVIEWS=40
+# Randomly shuffle all previews.
+# SHUFFLE=yes
+
+# Diverse directories, need to be full paths, not relative!
+INCOMING_DIR=$(pwd)/incoming
+DIST_DIR=$(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
+TARBALL_INCLUDE=yes
+TARBALL_SUFFIX=.tar
+TAR_OPTS='-c'
+
+# Some debugging options
+#set -e
+#set -x
 

 

 In the case for irregular.ninja, I changed the defaults to the following:

@@ -4399,38 +4399,38 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
--- photoalbumrc        2023-10-29 21:42:00.894202045 +0200
-+++ photoalbumrc.new 2023-06-04 10:40:08.030994440 +0300
-@@ -1,23 +1,24 @@
- # The title of the photoalbum
--TITLE='A simple Photoalbum'
-+TITLE='Irregular.Ninja'
-
- # Thumbnail height geometry
--THUMBHEIGHT=300
-+THUMBHEIGHT=400
- # Normal geometry height (when viewing photo). Uncomment, to keep original size.
--HEIGHT=1200
-+HEIGHT=1800
- # Max previews per page.
- MAXPREVIEWS=40
--# Randomly shuffle all previews.
--# SHUFFLE=yes
-+# Randomly shuffle
-+SHUFFLE=yes
-
- # Diverse directories, need to be full paths, not relative!
--INCOMING_DIR=$(pwd)/incoming
-+INCOMING_DIR=~/Nextcloud/Photos/irregular.ninja
- DIST_DIR=$(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
--TARBALL_INCLUDE=yes
-+TARBALL_INCLUDE=no
- TARBALL_SUFFIX=.tar
- TAR_OPTS='-c'
+
--- photoalbumrc        2023-10-29 21:42:00.894202045 +0200
++++ photoalbumrc.new 2023-06-04 10:40:08.030994440 +0300
+@@ -1,23 +1,24 @@
+ # The title of the photoalbum
+-TITLE='A simple Photoalbum'
++TITLE='Irregular.Ninja'
+
+ # Thumbnail height geometry
+-THUMBHEIGHT=300
++THUMBHEIGHT=400
+ # Normal geometry height (when viewing photo). Uncomment, to keep original size.
+-HEIGHT=1200
++HEIGHT=1800
+ # Max previews per page.
+ MAXPREVIEWS=40
+-# Randomly shuffle all previews.
+-# SHUFFLE=yes
++# Randomly shuffle
++SHUFFLE=yes
+
+ # Diverse directories, need to be full paths, not relative!
+-INCOMING_DIR=$(pwd)/incoming
++INCOMING_DIR=~/Nextcloud/Photos/irregular.ninja
+ DIST_DIR=$(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
+-TARBALL_INCLUDE=yes
++TARBALL_INCLUDE=no
+ TARBALL_SUFFIX=.tar
+ TAR_OPTS='-c'
 

 

 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 incoming directory. Also, a tarball containing the whole album as a download isn't provided.

@@ -4603,7 +4603,7 @@ blurs  html  index.html  photos  thumbs
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dtail --servers serverlist.txt --grep INFO --files "/var/log/dserver/*.log"
+
% 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,...

@@ -4616,7 +4616,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dtail --servers serverlist.txt --grep INFO "/var/log/dserver/*.log"
+
% dtail --servers serverlist.txt --grep INFO "/var/log/dserver/*.log"
 

 

 
Aggregating logs


@@ -4629,10 +4629,10 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dtail --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    --query 'from STATS select sum($goroutines),sum($cgocalls),
-             last($time),max(lifetimeConnections)'
+
% dtail --servers serverlist.txt \
+    --files '/var/log/dserver/*.log' \
+    --query 'from STATS select sum($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.

@@ -4645,10 +4645,10 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dtail --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    'from STATS select sum($goroutines),sum($cgocalls),
-     last($time),max(lifetimeConnections)'
+
% dtail --servers serverlist.txt \
+    --files '/var/log/dserver/*.log' \
+    'from STATS select sum($goroutines),sum($cgocalls),
+     last($time),max(lifetimeConnections)'
 

 

 Here is another example:

@@ -4657,10 +4657,10 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% 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 --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

@@ -4671,9 +4671,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dtail --servers serverlist.txt \
-    --files '/var/log/dserver/*.log' \
-    --query 'from STATS select ... outfile append result.csv'
+
% dtail --servers serverlist.txt \
+    --files '/var/log/dserver/*.log' \
+    --query 'from STATS select ... outfile append result.csv'
 

 

 
How to use dcat


@@ -4686,7 +4686,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dcat --servers serverlist.txt --files /etc/hostname
+
% dcat --servers serverlist.txt --files /etc/hostname
 

 

 Cat example

@@ -4697,7 +4697,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dcat --servers serverlist.txt /etc/hostname
+
% dcat --servers serverlist.txt /etc/hostname
 

 

 
How to use dgrep


@@ -4708,9 +4708,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dgrep --servers server1.example.org:2223 \
-    --files /etc/passwd \
-    --regex nologin
+
% 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.

@@ -4727,10 +4727,10 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% 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)'
+
% 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. 

@@ -4753,9 +4753,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% 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)'
+
% 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:

@@ -4764,9 +4764,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dmap 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,
-        lifetimeConnections group by $hostname order by max($cgocalls)' \
-        /var/log/dsever/dserver.log
+
% 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:

@@ -4775,9 +4775,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% cat /var/log/dserver/dserver.log | \
-    dmap 'from STATS select $hostname,max($goroutines),max($cgocalls),$loadavg,
-          lifetimeConnections group by $hostname order by max($cgocalls)'
+
% 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


@@ -4788,16 +4788,16 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% 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
+
% 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.

@@ -4810,44 +4810,44 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
% dtail /var/log/dserver/dserver.log
+
% dtail /var/log/dserver/dserver.log
 

 

 
-
% dtail --logLevel trace /var/log/dserver/dserver.log
+
% dtail --logLevel trace /var/log/dserver/dserver.log
 

 

 
-
% dcat /etc/passwd
+
% dcat /etc/passwd
 

 

 
-
% dcat --plain /etc/passwd > /etc/test
-# Should show no differences.
-diff /etc/test /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
+
% dgrep --regex ERROR --files /var/log/dserver/dsever.log
 

 

 
-
% dgrep --before 10 --after 10 --max 10 --grep ERROR /var/log/dserver/dsever.log
+
% 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!

@@ -5017,9 +5017,9 @@ DC on fire:
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
if [ -n "$foo" ]; then
-  echo "$foo"
-fi
+
if [ -n "$foo" ]; then
+  echo "$foo"
+fi
 

 

 Please run source-highlight --lang-list for a list of all supported languages.

@@ -5048,7 +5048,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
declare -xr MASTODON_URI='https://fosstodon.org/@snonux'
+
declare -xr MASTODON_URI='https://fosstodon.org/@snonux'
 

 

 and add the following into your index.gmi:

@@ -5063,7 +5063,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
<a href='https://fosstodon.org/@snonux' rel='me'>Me at Mastodon</a>
+
<a href='https://fosstodon.org/@snonux' rel='me'>Me at Mastodon</a>
 

 

 
More


@@ -5563,11 +5563,11 @@ Have a nice day!
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
git clone https://codeberg.org/snonux/gogios.git
-cd gogios
-go build -o gogios cmd/gogios/main.go
-doas cp gogios /usr/local/bin/gogios
-doas chmod 755 /usr/local/bin/gogios
+
git clone https://codeberg.org/snonux/gogios.git
+cd gogios
+go build -o gogios cmd/gogios/main.go
+doas cp gogios /usr/local/bin/gogios
+doas chmod 755 /usr/local/bin/gogios
 

 

 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:

@@ -5576,9 +5576,9 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
export GOOS=openbsd
-export GOARCH=amd64
-go build -o gogios cmd/gogios/main.go
+
export GOOS=openbsd
+export GOARCH=amd64
+go build -o gogios cmd/gogios/main.go
 

 

 On your OpenBSD system, copy the binary to /usr/local/bin/gogios 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.

@@ -5593,11 +5593,11 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
doas adduser -group _gogios -batch _gogios
-doas usermod -d /var/run/gogios _gogios
-doas mkdir -p /var/run/gogios
-doas chown _gogios:_gogios /var/run/gogios
-doas chmod 750 /var/run/gogios
+
doas adduser -group _gogios -batch _gogios
+doas usermod -d /var/run/gogios _gogios
+doas mkdir -p /var/run/gogios
+doas chown _gogios:_gogios /var/run/gogios
+doas chmod 750 /var/run/gogios
 

 

 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.

@@ -5610,8 +5610,8 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
doas pkg_add monitoring-plugins
-doas pkg_add nrpe # If you want to execute checks remotely via NRPE.
+
doas pkg_add monitoring-plugins
+doas pkg_add nrpe # If you want to execute checks remotely via NRPE.
 

 

 Once the installation is complete, you can find the monitoring plugins in the /usr/local/libexec/nagios directory, which then can be configured to be used in gogios.json.

@@ -5638,41 +5638,41 @@ 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 -->
-
{
-  "EmailTo": "paul@dev.buetow.org",
-  "EmailFrom": "gogios@buetow.org",
-  "CheckTimeoutS": 10,
-  "CheckConcurrency": 2,
-  "StateDir": "/var/run/gogios",
-  "Checks": {
-    "Check ICMP4 www.foo.zone": {
-      "Plugin": "/usr/local/libexec/nagios/check_ping",
-      "Args": [ "-H", "www.foo.zone", "-4", "-w", "50,10%", "-c", "100,15%" ],
-      "Retries": 3,
-      "RetryInterval": 10
-    },
-    "Check ICMP6 www.foo.zone": {
-      "Plugin": "/usr/local/libexec/nagios/check_ping",
-      "Args": [ "-H", "www.foo.zone", "-6", "-w", "50,10%", "-c", "100,15%" ],
-      "Retries": 3,
-      "RetryInterval": 10
-    },
-    "www.foo.zone HTTP IPv4": {
-      "Plugin": "/usr/local/libexec/nagios/check_http",
-      "Args": ["www.foo.zone", "-4"],
-      "DependsOn": ["Check ICMP4 www.foo.zone"]
-    },
-    "www.foo.zone HTTP IPv6": {
-      "Plugin": "/usr/local/libexec/nagios/check_http",
-      "Args": ["www.foo.zone", "-6"],
-      "DependsOn": ["Check ICMP6 www.foo.zone"]
-    }
-    "Check NRPE Disk Usage foo.zone": {
-      "Plugin": "/usr/local/libexec/nagios/check_nrpe",
-      "Args": ["-H", "foo.zone", "-c", "check_disk", "-p", "5666", "-4"]
-    }
-  }
-}
+
{
+  "EmailTo": "paul@dev.buetow.org",
+  "EmailFrom": "gogios@buetow.org",
+  "CheckTimeoutS": 10,
+  "CheckConcurrency": 2,
+  "StateDir": "/var/run/gogios",
+  "Checks": {
+    "Check ICMP4 www.foo.zone": {
+      "Plugin": "/usr/local/libexec/nagios/check_ping",
+      "Args": [ "-H", "www.foo.zone", "-4", "-w", "50,10%", "-c", "100,15%" ],
+      "Retries": 3,
+      "RetryInterval": 10
+    },
+    "Check ICMP6 www.foo.zone": {
+      "Plugin": "/usr/local/libexec/nagios/check_ping",
+      "Args": [ "-H", "www.foo.zone", "-6", "-w", "50,10%", "-c", "100,15%" ],
+      "Retries": 3,
+      "RetryInterval": 10
+    },
+    "www.foo.zone HTTP IPv4": {
+      "Plugin": "/usr/local/libexec/nagios/check_http",
+      "Args": ["www.foo.zone", "-4"],
+      "DependsOn": ["Check ICMP4 www.foo.zone"]
+    },
+    "www.foo.zone HTTP IPv6": {
+      "Plugin": "/usr/local/libexec/nagios/check_http",
+      "Args": ["www.foo.zone", "-6"],
+      "DependsOn": ["Check ICMP6 www.foo.zone"]
+    }
+    "Check NRPE Disk Usage foo.zone": {
+      "Plugin": "/usr/local/libexec/nagios/check_nrpe",
+      "Args": ["-H", "foo.zone", "-c", "check_disk", "-p", "5666", "-4"]
+    }
+  }
+}
 

 

 
    
@@ -5701,7 +5701,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    doas -u _gogios /usr/local/bin/gogios -cfg /etc/gogios.json
+
    doas -u _gogios /usr/local/bin/gogios -cfg /etc/gogios.json
 
    
 
    
 To run Gogios via CRON on OpenBSD as the gogios user and check all services once per minute, follow these steps:
    
@@ -5951,7 +5951,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    $ raku guprecords.raku --stats=dir=$HOME/git/uprecords/stats --all
+
    $ raku guprecords.raku --stats=dir=$HOME/git/uprecords/stats --all
 
    
 
    
 This command will generate a comprehensive uptime report from the collected statistics, making it easy to review and enjoy the data.
    
@@ -6363,8 +6363,8 @@ Blablabla...
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    declare -xr PRE_GENERATE_HOOK=./pre_generate_hook.sh
-declare -xr POST_PUBLISH_HOOK=./post_publish_hook.sh
+
    declare -xr PRE_GENERATE_HOOK=./pre_generate_hook.sh
+declare -xr POST_PUBLISH_HOOK=./post_publish_hook.sh
 
    
 
    
 
    Use of safer Bash options

    
@@ -6381,10 +6381,10 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    % cat gemfeed/2023-02-26-title-here.gmi
-# Title here
+
    % cat gemfeed/2023-02-26-title-here.gmi
+# Title here
 
-The remaining content of the Gemtext file...
+The remaining content of the Gemtext file...
 
    
 
    
 Gemtexter will add a line starting with  > Published at ... now. Any subsequent Atom feed generation will then use that date.
    
@@ -6393,12 +6393,12 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    % cat gemfeed/2023-02-26-title-here.gmi
-# Title here
+
    % cat gemfeed/2023-02-26-title-here.gmi
+# Title here
 
-> Published at 2023-02-26T21:43:51+01:00
+> Published at 2023-02-26T21:43:51+01:00
 
-The remaining content of the Gemtext file...
+The remaining content of the Gemtext file...
 
    
 
    
 
    XMLLint support

    
@@ -7047,10 +7047,10 @@ Art by      \ \_!  / __!
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    " Clipboard
-vnoremap ,y !pbcopy<CR>ugv
-vnoremap ,i !pbpaste<CR>
-nmap ,i !wpbpaste<CR>
+
    " Clipboard
+vnoremap ,y !pbcopy<CR>ugv
+vnoremap ,i !pbpaste<CR>
+nmap ,i !wpbpaste<CR>
 
    
 
    
 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.
    
@@ -7670,23 +7670,23 @@ jgs                (________\  \
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    check_dependencies () {
-    # At least, Bash 5 is required
-    local -i required_version=5
-    IFS=. read -ra version <<< "$BASH_VERSION"
-    if [ "${version[0]}" -lt $required_version ]; then
-        log ERROR "ERROR, \"bash\" must be at least at major version $required_version!"
-        exit 2
-    fi
-
-    # These must be the GNU versions of the commands
-    for tool in $DATE $SED $GREP; do
-        if ! $tool --version | grep -q GNU; then
-            log ERROR "ERROR, \"$tool\" command is not the GNU version, please install!"
-            exit 2
-        fi
-    done
-}
+
    check_dependencies () {
+    # At least, Bash 5 is required
+    local -i required_version=5
+    IFS=. read -ra version <<< "$BASH_VERSION"
+    if [ "${version[0]}" -lt $required_version ]; then
+        log ERROR "ERROR, \"bash\" must be at least at major version $required_version!"
+        exit 2
+    fi
+
+    # These must be the GNU versions of the commands
+    for tool in $DATE $SED $GREP; do
+        if ! $tool --version | grep -q GNU; then
+            log ERROR "ERROR, \"$tool\" command is not the GNU version, please install!"
+            exit 2
+        fi
+    done
+}
 
    
 
    
 Especially macOS users didn't read the README carefully enough to install GNU Grep, GNU Sed and GNU Date before using Gemtexter.
    
@@ -7707,7 +7707,7 @@ http://www.gnu.org/software/src-highlite -->
 by Lorenzo Bettini
 http://www.lorenzobettini.it
 http://www.gnu.org/software/src-highlite -->
-
    ./gemtexter --generate '.*hello.*'
+
    ./gemtexter --generate '.*hello.*'
 
    
 
    
 
    Revamped git support

    
diff --git a/index.gmi b/index.gmi
index 9ce78177..61bc7f54 100644
--- a/index.gmi
+++ b/index.gmi
@@ -1,6 +1,6 @@
 # foo.zone
 
-> This site was generated at 2024-12-23T20:15:07+02:00 by `Gemtexter`
+> This site was generated at 2024-12-30T00:05:13+02:00 by `Gemtexter`
 
 Welcome to the foo.zone. Everything you read on this site is my personal opinion and experience. You can call me a Linux/*BSD enthusiast and hobbyist. I mainly write about tech, IT, programming and sometimes also about self-improvement here. Note that this blog usually does not overlap with what I do at my day job as a Site Reliability Engineer.
 
diff --git a/notes/the-stoic-challenge.gmi b/notes/the-stoic-challenge.gmi
index f879edd7..8f8d9743 100644
--- a/notes/the-stoic-challenge.gmi
+++ b/notes/the-stoic-challenge.gmi
@@ -19,11 +19,11 @@ These are my personal takeaways after reading "The Stoic Challenge:  A Philosoph
 ## Table of Contents
 
 * ⇢ "The Stoic Challenge" book notes
-* ⇢ ⇢ Got sets you up for a challenge
+* ⇢ ⇢ God sets you up for a challenge
 * ⇢ ⇢ Negative visualization
 * ⇢ ⇢ Oh, nice trick, you stoic "god"! ;-)
 
-## Got sets you up for a challenge
+## God sets you up for a challenge
 
 Gods set you up for a challenge to see how resilient you are. Is getting angry worth the price? If you stay calm then you can find the optimal workaround for the obstacle. Stay calm even with big setbacks. Practice minimalism of negative emotions.
 
diff --git a/uptime-stats.gmi b/uptime-stats.gmi
index d5b5d71e..b0c2f72c 100644
--- a/uptime-stats.gmi
+++ b/uptime-stats.gmi
@@ -1,6 +1,6 @@
 # My machine uptime stats
 
-> This site was last updated at 2024-12-23T20:15:07+02:00
+> This site was last updated at 2024-12-30T00:05:13+02:00
 
 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.
 
-- 
cgit v1.2.3