@muvlon@hachyderm.io avatar

muvlon

@muvlon@hachyderm.io

Linux enjoyer
Nazi hackers fuck off
he/him

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astrid, to random
@astrid@fedi.astrid.tech avatar

I think my blog titles need to be more clickbait and piss off more people

muvlon,
@muvlon@hachyderm.io avatar

@astrid Ansible, being a lisp, has homoiconicity of course. There is no difference between data and code!

  • Your data is a YAML hell
  • Your code is a YAML hell

Thanks for coming to my TEDx talk

muvlon,
@muvlon@hachyderm.io avatar

@astrid wait that's an actual post lmao

aeva, to NixOS
@aeva@mastodon.gamedev.place avatar

I don't actually have time today to work on any side projects, but I thought I'd run through the basic setup steps for MonoGame aaaand

./bin/Debug/net6.0/MyGame
bash: ./bin/Debug/net6.0/MyGame: cannot execute: required file not found

... which required file ._. ???

I think this sort of thing means it tried to dynamically link something and failed. I run into this whenever I try to run loose builds of Linux games on , but idk what to do about it.

muvlon,
@muvlon@hachyderm.io avatar

@aeva @duckonaut You can safely ignore them and yeet everything into environment.systemPackages. I've been doing that for years and the high court of NixOS hasn't been able to punish me yet.

muvlon,
@muvlon@hachyderm.io avatar

@aeva @anselmschueler @duckonaut It may seem so but that is really not the case. You see a way to install packages is just a morphism from packages to system configurations of of which there is in fact an uncountable number!

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

tried contabo, singapore networking is so slow, 30 minutes later it was still pulling the docker image for my app (from germany, but still!)

I'm not using contabo anymore

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime @zarel It's relatively new, when I got a contabo VPS ~4 years ago the awful web interface was still the only way to do it, and you got the root password in plain text via mail :D

I'm still happily using them but I'm a trash gremlin with basically no standards, and nobody else will give me a VPS with enough RAM for a minecraft server this cheap.

pid_eins, to random
@pid_eins@mastodon.social avatar

5️⃣ Here's the 5th installment of my series of posts highlighting key new features of the upcoming v256 release of systemd.

I am pretty sure all of you are well aware of the venerable "sudo" tool that is a key component of most Linux distributions since a long time. At the surface it's a tool that allows an unprivileged user to acquire privileges temporarily, from within their existing login sessions, for just one command, or maybe for a subshell.

"sudo" is very very useful, as it…

muvlon,
@muvlon@hachyderm.io avatar

@pid_eins @TheStroyer If a distro ships this and is able to stop depending on SUID entirely, could we have system-wide PR_SET_NO_NEW_PRIVS?

simontatham, to random
@simontatham@hachyderm.io avatar

In bash, writing ${var?} instead of just ${var} or $var means if var isn't defined then bash will throw an error and not execute your command, instead of expanding it to "" and carrying on.

mv file1 file2 $subdir # oops, I overwrote file2
mv file1 file2 ${subdir?} # error message instead of disaster

My favourite use of this is for example commands in documentation, with placeholders for the user to fill in. Then it's OK if a user accidentally copy-pastes it without filling them in!

muvlon,
@muvlon@hachyderm.io avatar

@Rob_Russell @simontatham set -e is errexit, which is also nice but something else. To have ${var} error on undefined, you need set -u.

I reflexively start all of my scripts with ol' reliable set -euo pipefail.

muvlon,
@muvlon@hachyderm.io avatar

@nogweii @simontatham @Rob_Russell @hendric Yep! There are some pitfalls though, which is why I sometimes do opt out of pipefail.

Example: if foo | grep -q "bar"; then ... is something you might like to use. The -q makes grep quiet, i.e. it won't print matches. However! It will also make grep exit (successfully) on the first match. That by itself is fine, but it also closes grep's stdin, so if foo checks for errors, it might fail now. And with pipefail, your if is now never taken!

pid_eins, (edited ) to random
@pid_eins@mastodon.social avatar

1️⃣ So let's try something new. As we are closing in on tagging systemd v256-rc1, let's see if I manage to post a brief mastodon item about major new features of the upcoming release, every few days until the final release of v256. I figure not everyone reads NEWS files, even if curious. Hence let's start today with the 1st post: the new .v/ directories. You know those .d/ directories that are quite popular in low-level Linux packages these days? While .d/ dirs never have been formalized properly…

muvlon,
@muvlon@hachyderm.io avatar

@pid_eins Okay, I'll bite: What the heck is a NEWS file, and where would one read it?

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