blog

go toolachain cheat sheet Environment go env: see go environment go mod tidy: add all used libraries to the mod-file and download them go get -u: update and download all dependencies go tool <go repo with main>: run third party go repo (mockery, regctl) R…

TLA+ - cheat sheet TLA+ is a formal specification language to model and proof systems.

Flashing OpenThread Firmware on Smlight SLZB-07 Matter/Thread is still experimental and getting started took me some time.

Design audio PCBs with KiCad I finally wrapped my head around KiCad for designing and ordering circuits.

explore Float::INFINITY I was looking for an approach letting a client endlessly reconnect.

hexdump pattern I find myself surprisingly often in situations where I want to inspect byte buffers.

Let’s build a hypervisor with KVM There are a bunch of common challenges on a bucket list of a software developer: compiler/interpreter operating system regex parser http server OpenGL (probably Vulkan now) graphic/game engine let an LED blink Recently, I…

Stickers on my laptop billboard Laptop lid with stickers.

Gokrazy with Raspberry Pi Zero Default gokrazty output.

Reinvent the wheel Detailed photo with flash from my dad’s mountainbike tire.

Analog Oscilloscope e2e tests Lately I fulfilled a long-forgotten dream and became owner of an analog oscilloscope.

Chemnitzer Linuxtage 2025 I’ve attended the Chemnitzer Linuxtage for the second time1.

Proof of work Proof of work plays an interesting role within secure networking, DDoS protection and an essential role creating blockchains aka mining coins1.

FOSDEM 2025 I attended the FOSDEM 2025 in Brussels for the first time1.

38c3 - illegal instructions I attended my first CCC (Chaos Computer Congress) in Hamburg.

Generic swapping in go When writing tests, overriding global values/defaults1 can become pretty handy for mocking.

Local-only gitignore Red passenger traffic light in Munich.

go yolo Green passenger traffic light in Munich.

on - run commands on file event On top of the Ulriken near Bergen in Norway from my last rl journey.

Ferris sweep split keyboard build I built a Ferris Sweep split keyboard originated from the Datenspuren 24 souvenirs.

Last mile is always the hardest

Datenspuren 24 I’ve attended the Datenspuren 24 hosted by C3D2 in Dresden.

Writing blog posts - done is better than perfect I had a lot of blogs since I have access to the internet.

Home office via hot spot tl;dr Working from home via hot spot isn’t as unreliable and traffic expensive as I thought.

Bash - cheat sheet Contents Arguments Brace Expansion Colors Conditionals Debugging Pipes and Redirects Arguments variable description $0 name of the script $1 first argument $2 second argument $<n> <nth> argument, where n > 0 $@ all arguments as one stri…

Getting old

GopherCon Europe 2024 I attended the GopherCon Europe 2024 in Berlin1 to check out the latest GOssip2.

working on the road - self experiment tl;dr: Self experiment about working on the road.

Chemnitzer Linuxtage 2024 I attended the Chemnitzer Linuxtage 2024 and it was great fun1: date: 16.03.+17.03. 6 lecture halls lectures (german only regular ticket price: 12€ workshop price: 5€ Disclaimer as within my last conference: I’m paraphrasing (ita…

ruby - get plain class/instance method list tl;dr: <your-class>.methods - Object.methods Whenever I juggle with ruby classes or instances within a ruby REPL1, I had hard times to figure out their methods: > Time.methods => [:at, :now, :utc, :gm, :loca…

git force-push for professionals tl;dr: Use --force-with-lease instead of --force to avoid overwriting upstream changes.

Ollama and codelama - enter the AI rabbit hole Ollama makes using models like codellama as easy to use as containers.

let’s boot with riscv Let’s boot some C code1 with riscv64 using qemu: riscy2 After about half a year of os development abstinence.

execute c source files tl;dr: add //usr/bin/gcc "$0" && exec .

go integration tests with ginkgo and gomega Headlights of Louvre’s statuary hall in Paris.

Continue interrupted uploads via dd skip Squirel in a London park.

verbose v1.1.0 - example and edit support I recently got a new motivation to update my vocabulary service verbose.

Hola docker, mucho gusto!

Hashsets in go tl;dr var hashSet map[string]struct{} Introduction The term HashSet is a data structure from the Java universe describing a value-less HashMap1.

How to rename files without specifying the path twice How to avoid mv /this/is/a/long/path/to/my/guinea/pig/trfel.pig /this/is/a/long/path/to/my/guinea/pig/trueffel.pig and just do something like <cmd> /this/is/a/long/path/to/my/guinea/pig/trfel.file true…

measure downtime durations via icmp Construction site at the Sendlinger Tor in Munich.

Godot Wild Jam 60 We1 participated at the Godot Wild Jam #60 with the theme malfunction and submitted Rebot Roboot: Repair your robotic companion after a failed firmware update. jam submission game source soundtrack: Mandarin Marshmallow one wildcard impl…

linux file observability In linux, “everything” is a file1.

blog update: customization Berlin skyline at sunset from a rooftop.

manpage fulltext search man -K <term> got you covered1: -K, --global-apropos Search for text in all manual pages.

let’s boot Let’s boot some x86 code with qemu.

Godot Wild Jam 55 - zzZ I did my first solo submission at the godot wild jam 55 about the theme dreams and reached rank 29!

blogstage - static web server in rust I was looking for a useful service-oriented Rust project where I can test my project standards1 and dive deeper into the language.

Finish rustlings +----------------------------------------------------+ | You made it to the Fe-nish line!

Thinking tools aka fidget toys As my mind often needs something to do, I stumpled across fidget toys1 as an alternative of chewing finger nails and excessive chewing gum usage2.