iPhone Tethering to Raspberry Pi

On the following Raspbian OS (/etc/os-release):

PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
NAME="Debian GNU/Linux"
VERSION_ID="12"
VERSION="12 (bookworm)"
VERSION_CODENAME=bookworm
ID=debian

reinhrst / Dockerfile

Created November 4, 2023 04:05

emscripten for arm64 / aarch64 Docker container

	FROM debian

	RUN apt-get update && apt-get install -y git xz-utils python3 curl && rm -rf /var/lib/apt/lists/*

	RUN git clone https://github.com/emscripten-core/emsdk.git && cd /emsdk && ./emsdk install latest-arm64-linux && ./emsdk activate latest-arm64-linux
	ENTRYPOINT ["/emsdk/docker/entrypoint.sh"]

reinhrst / Cargo.toml

Created June 15, 2023 10:49

Nom streaming test (blog post to follow soon)

	[package]
	name = "nomtest"
	version = "0.1.0"
	edition = "2021"

	# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

	[dependencies]
	nom = "7.1.3"
	tempfile = "3.5.0"

reinhrst / reveal-js.html

Created March 21, 2023 08:22

One page bowser-only solution to make a Reveal presentation in Markdown, with Mermaid diagrams (no Node, in-browser)

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8" />
	<meta
	name="viewport"
	content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"
	/>

	<title>reveal.js</title>

reinhrst / limit.sb

Created March 20, 2023 08:00

Limiting sandbox

	; run `sandbox-exec -f limit.sb $program`
	(version 1)
	(debug deny)
	(deny default)
	(import "/System/Library/Sandbox/Profiles/bsd.sb")
	(allow network-outbound)
	(deny network-outbound (remote tcp "localhost:*"))
	(allow process-fork)
	(allow process-exec*
	(subpath "/opt/homebrew/")

reinhrst / create-password.sh

Last active April 21, 2023 07:45

Correct horse battery staple: creates a password of english words. First param is number of words to use (default=3)

	TEMPDIR="$(mktemp -d)"
	NR_WORDS=${1:-3}
	cd "$TEMPDIR"
	curl 'https://raw.githubusercontent.com/first20hours/google-10000-english/master/google-10000-english.txt' \| grep -E "^.{4,8}$" \| sort \| uniq > wordlist.txt
	NR_LINES="$(wc -l wordlist.txt \| grep -oe '\d\+')"
	POSS="$(echo "$NR_LINES^$NR_WORDS" \| bc)"
	BITS="$(echo "l($POSS)/l(2)" \| bc -l)"
	CHARS="$(echo "l($POSS)/l(72)" \| bc -l)"
	printf 'We have %d lines; we willl take %d words; there are %.3e possibilities (%.1f bits of entropy, comparable to %.1f completely random chars (lower/upper/number/special))\n' "$NR_LINES" "$NR_WORDS" "$POSS" "$BITS" "$CHARS"
	if [[ $NR_LINES -lt "4000" ]]; then

reinhrst / tools.ts

Created February 20, 2023 08:54

Typescript object pick and omit functions

	// typescript versions of https://stackoverflow.com/a/56592365/1207489
	const pick = <T extends {}, K extends keyof T>(obj: T, ...keys: K[]) => (
	Object.fromEntries(
	keys
	.filter(key => key in obj)
	.map(key => [key, obj[key]])
	) as Pick<T, K>
	);

	const inclusivePick = <T extends {}, K extends (string \| number \| symbol)>(

reinhrst / npcolorsys.py

Last active April 24, 2025 14:15

RGB to HLS conversion and back

	import numpy as np

	def rgb_to_hls(rgb_array: np.ndarray) -> np.ndarray:
	"""
	Expects an array of shape (X, 3), each row being RGB colours.
	Returns an array of same size, each row being HLS colours.
	Like `colorsys` python module, all values are between 0 and 1.

	NOTE: like `colorsys`, this uses HLS rather than the more usual HSL
	"""

reinhrst / save-add-commit-push.vim

Created November 7, 2022 10:49

	" This function will first check if no changes are staged in git.
	" If so, it will save the current file, and then commit and push it.
	" The whole function is mapped to <leader>sacp
	" the function (when called manually) allows an argument that is the commit
	" message

	" Only use this for things where it makes sense to commit one file at a time
	" (like a dev log). Else make proper commits.

	function SaveAddCommitPushInfo(msg) abort

reinhrst / 3d design.scad

Created July 26, 2022 09:27

	scale([4, 4, 1]) {
	translate([20, 20, 0]) {linear_extrude (height=1) {circle(26);}};
	color([0, 0, 0]) {
	translate([0, 26, 0]) { linear_extrude (height=3){import("wifi.svg"); }; }
	translate([2, 15, 1]) { linear_extrude (height=1){rotate(90){text("wifi", size=5); }}; }
	translate([43, 12, 1]) { linear_extrude (height=1){rotate(90){text("hs3.pl", size=5); }}; }
	translate([16, -2, 1]) { linear_extrude (height=1){text("QR", size=5); }; }
	translate([28, 43, 1]) { linear_extrude (height=1){rotate(180)text("NFC", size=5);}; }
	}
	}

Claude reinhrst