@muvlon@hachyderm.io avatar

muvlon

@muvlon@hachyderm.io

Linux enjoyer
Nazi hackers fuck off
he/him

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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?

ekuber, to rust
@ekuber@hachyderm.io avatar

Somewhat cursed idea: "attributes at a distance"

#![attr(target = crate::foo::Bar)]

mod foo {  
 struct Bar;  
}

What would you use this for?

muvlon,
@muvlon@hachyderm.io avatar

@ekuber Why of course to derive traits on foreign types 😈

Life's too short for coherence!

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

I want back all the time I spent waiting for openssl to build

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime And I want back all the time I spent waiting for autotools to figure out whether the C compiler supports identifiers longer than 5 characters and whether stdio.h exists.

fasterthanlime, (edited ) to random
@fasterthanlime@hachyderm.io avatar

is "nerd" an insult?

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime It depends on context. When in doubt, use a parenthetical to make it explicit.

e.g. "get absolutely loved and cherished, nerd (affectionate)"

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

Due to:

  • macOS/iOS integration being really good
  • context switching between win11/macOS sucking
  • wanting affordable Apple Silicon CI
  • zed being macOS-only for now
  • DaVinci Resolve being great on mac (even w/low specs)
    I bought the cheapest M2 mac mini they have 🤷
muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime Nooo you cannot have nice things for yourself! Please self-chastise by installing GNU/Linux! (jk, have fun with the mac)

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

On the one hand, I could tell my coworkers about my website

On the other hand, I feel like it's gotten sufficiently silly that it might not be a good idea

muvlon,
@muvlon@hachyderm.io avatar

@astrid If they can't handle you at your silly website, they don't deserve you at your wage labour!

mjk, to random
@mjk@hachyderm.io avatar

you must be THIS TALL to use floating-point equality checks

muvlon,
@muvlon@hachyderm.io avatar

@aeva @saethlin @mjk Not "real deal" undefined behavior - float arithmetic is safe and can therefore never yield UB - but platform-specific behavior indeed.

muvlon,
@muvlon@hachyderm.io avatar

@aeva @saethlin @mjk In this case, not the entire behavior is left to the vendor - it's bounded. Real UB can mean anything, including memory corruption, arbitrary code execution, 10.0 CVE etc. In the float case the behavior is still constrained to produce a valid value of the type and no other adverse effects.

vidister, to random
@vidister@chaos.social avatar

allocating 240/4 is the fracking of Internet engineering

muvlon,
@muvlon@hachyderm.io avatar

@vidister Just one more /8 will fix it I swear it'll be different this time we can still save IPv4 please

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

I love when software takes the first locale-related environment variable / registry key / file they can find and decide OKAY LET'S SHOW OUR UI IN THIS LANGUAGE

like.. no? region != display language != input language != input method != datetime format != etc.

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime Looking in the receipt to see whether you paid $14.99, £12.95 or 15€ for the software so I can pick American English, British English or https://en.wikipedia.org/wiki/Euro_English for the UI

hannah, to random
@hannah@posts.rat.pictures avatar

Between CVE and SCP i always forget which one is about weird incomprehensible scary shit and which is a guy with a skull head

muvlon,
@muvlon@hachyderm.io avatar

@hannah Stop using CVSS language!

Instead of saying "This is a 9.8/10 severity vulnerability exploitable remotely over the network.", say
"This is a keter-class CVE, threatening an XK-class end of business scenario. MTF Rho-11 'Daemon Hunters' have been dispatched to reestablish containment".

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

good morning

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime @h And thanks to how the Nix works, this is basically impossible to ever change now 🙃 We put all the stability pressure in that one place (the builder interface)

muvlon, to random
@muvlon@hachyderm.io avatar

GitHub Actions users when they learn about GitHub Consequences

sunfish, to random
@sunfish@hachyderm.io avatar

If raw pointers can work with any data, then what data is at address 0x7fff63b8c4b4?

muvlon,
@muvlon@hachyderm.io avatar

@sunfish "AWAVAUATUSH"

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

“inflation is problematic” really has a different vibe depending on whether that discussion is happening on slack or discord

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime hits even more different on physics.stackexchange.com

fasterthanlime, to random
@fasterthanlime@hachyderm.io avatar

I need a command-not-found hook that runs nix profile install nixpkgs#the-command and re-runs the command because that fixes it 90% of the time

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime Can you just install https://github.com/nix-community/comma as a command-not-found hook?

18+ fasterthanlime, (edited ) to random
@fasterthanlime@hachyderm.io avatar

starting the year off right by accidentally exposing a postgres server on 5432 of a hetzner host and IMMEDIATELY getting ransomed

(docker run -p exposes on 0.0.0.0, in case you were wondering)

thankfully there is no sensitive data in there and I have backups 😌

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime This is a certified Docker© moment

muvlon, to random
@muvlon@hachyderm.io avatar

Me: I want restricted privileges for a service
Unix: Of course, just make a new user
Me: Okay Unix, I'd like to add an "nginx" user
Unix: Sure just tell me their telephone number and what room their office is in

thephd, to random
@thephd@pony.social avatar

Wasn't expecting my blog to get directly cited in a WG14 e-mail, but here we are, I guess.

muvlon,
@muvlon@hachyderm.io avatar

@slyecho @thephd intmax_t_final_2_FINAL.pdf

fasterthanlime, (edited ) to random
@fasterthanlime@hachyderm.io avatar

in an impressive failure of public transportation policy, it’s *about the same price and twice as fast to rent a car and drive to the airport, than to take public transportation + a shuttle (even if you live here)

edit: here’s the detailed breakdown: https://hachyderm.io/@fasterthanlime/111637882952516038

muvlon,
@muvlon@hachyderm.io avatar

@fasterthanlime Also, in Germany, it's not unheard of for domestic flights to be cheaper than a high-speed rail ticket. It's maddening.

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

if someone gives me $1,000,000 i will rewrite the Linux kernel in Rust

muvlon,
@muvlon@hachyderm.io avatar

@astrid too late. check your paypal.

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