arachsys

#!/bin/bash

set -o pipefail
shopt -s extglob
export LANG=C.UTF-8

export API=${API:-https://api.openai.com/v1/chat/completions}
export KEY=${KEY:-$(< ~/.config/secrets/openai)}
export MODEL=${MODEL:-gpt-4o}

arachsys

#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <net/if.h>
#include <sys/socket.h>

arachsys

Quick wireguard tunnel setup

This is a simple point-to-point tunnel between two hosts with no address restrictions on traffic routed through it. Fixed link-local addresses of fe80::1 and fe80::2 are assigned to the endpoints, suitable for running RFC 5549 link-local BGP.

Generate the secret and public keys

arachsys

Downloading a Debian root filesystem

This note is mainly for my own benefit but might be handy for others too.

Whenever I want an ad hoc Debian root filesystem to build and test my software on a mainstream consumer Linux distribution, I am frustrated by my struggle to find and download one.

Search engines turn up lots of documentation, but everything seems to involve weird Debian-specific tooling like debootstrap. Please stop!

arachsys

#!/bin/python

import functools, math, os, secrets, sys

letters = list('abcdefghijklmnopqrstuvwxyz')
digits = list('0123456789')
vowels = list('aeiou')

consonants = [ c for c in letters if c not in vowels ]
clusters = { c + 'y' for c in consonants if c not in 'qy' } | {