Jonathan Hartley tartley

🍰

brb smashing the patriarchy

Made out of meat.

tartley / auto-venv.sh

Last active December 2, 2025 15:08

Automatically activate/deactivate virtualenvs in `.venv` when we `cd` into their parent directory

	# auto activate virtualenvs ------------------

	# I suspect this could be rewritten to just use VIRTUAL_ENV directly,
	# without needing the $parentdir variable at all.

	function cd() {
	builtin cd "$@"

	# If we move out of a previous parentdir, deactivate the previous venv
	if [[ -n "$parentdir" && "$PWD"/ != "$parentdir"/* ]]; then

tartley / gist:b76785daf4383cdeb0bc3d24b7f2202d

Created November 21, 2025 22:10

Replace Firefox snap with apt on Ubuntu

	# Ubuntu prefers the Firefox snap. Use the apt instead.

	sudo snap remove --purge firefox

	sudo add-apt-repository ppa:mozillateam/ppa
	sudo apt update
	sudo apt install firefox

	# Also prefer the apt in future updates
	sudo tee /etc/apt/preferences.d/firefox <<EOF

tartley / time_time.py

Last active February 7, 2025 19:48

Time how long, on average, it takes to call time.time(), using only time.time() to measure.

	#!/usr/bin/env python3
	from time import time

	# If we iterate a million times,
	# then results per-call are in micro seconds.
	ITERS = 1_000_000
	UNIT = "µs"

	# If our first loop below ONLY measures calls to time(),
	# then the second loop below (which is to measure loop overhead)

tartley / exitval in ps1

Created July 10, 2012 14:22

prepend a red 'last command exit value' to PS1, only for non-zero values.

	# display red exit value if it isn't zero
	PROMPT_COMMAND='EXITVAL=$?; '$PROMPT_COMMAND
	GET_EXITVAL='$(if [[ $EXITVAL != 0 ]]; then echo -n "\[\e[37;41;01m\] $EXITVAL \[\e[0m\] "; fi)'
	export PS1="$GET_EXITVAL$PS1"