atomicstack’s gists

atomicstack / .gitconfig

Created June 6, 2018 00:27

	[diff]
	# external = git-diff-wrapper.sh
	algorithm = patience
	# colorMoved=plain

	[pager]
	diff =

	[color]
	diff = auto

atomicstack / gist:499d26c2b132816b1a6e91a5c73644d1

Created September 21, 2018 21:36

perl world clock

	$ perl -MDateTime -E 'printf( qq{%30s: %s\n}, $_, DateTime->now(time_zone => $_)->strftime(q{%a %F %T})) foreach qw{ US/Pacific US/Eastern Europe/London Europe/Amsterdam Europe/Berlin Asia/Singapore Australia/Melbourne }'
	US/Pacific: Fri 2018-09-21 14:35:37
	US/Eastern: Fri 2018-09-21 17:35:37
	Europe/London: Fri 2018-09-21 22:35:37
	Europe/Amsterdam: Fri 2018-09-21 23:35:37
	Europe/Berlin: Fri 2018-09-21 23:35:37
	Asia/Singapore: Sat 2018-09-22 05:35:37
	Australia/Melbourne: Sat 2018-09-22 07:35:37

atomicstack / gist:624ef9b19ea5bb5026cb9d3e62a5a30e

Created October 2, 2019 23:48

python builder

	#!/bin/bash

	# extract tarball and run from its root dir.
	# wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz && tar -xvf Python-3.7.4.tgz

	sudo make clean && ( env LDFLAGS=-Wl,-rpath,/usr/local/python-3.7.4/lib ./configure --enable-optimizations --enable-shared --with-ssl --prefix=/usr/local/python-3.7.4 && make && sudo make install ) \|& ( ts '[%F %T] ' \| tee -a build.log ) \| pv -l -s 10000 > /dev/null

atomicstack / nmap_build_info.txt

Created June 10, 2020 09:43

building nmap on macOS

	% eval $( brew info openssl \| egrep '(LDFLAGS\|CPPFLAGS)' )
	% export PYTHON=/usr/local/bin/python3
	% ./configure --with-libpcap=included --prefix=$PWD

atomicstack / zprofile_without_PATH_mangling

Created June 24, 2020 21:27

	# system-wide environment settings for zsh(1)
	# unfucks PATH breakage inside tmux
	# https://superuser.com/questions/544989/does-tmux-sort-the-path-variable
	# https://apple.stackexchange.com/questions/248813/tmux-always-modify-my-zsh-path

	if [[ -x /usr/libexec/path_helper && -z "$TMUX" ]]; then
	eval `/usr/libexec/path_helper -s`
	fi

atomicstack / fetch_raspberry_pi_firmware.sh

Last active May 6, 2025 12:36

a one-liner to fetch the latest revisions of /boot/*.{elf,dat} in the RPi firmware repository (because it's a 14GB repo and cloning takes forever, and we're only interested in ~20MB of data). requires the command line utils wget and jq

wget --base=https://github.com/raspberrypi/firmware/raw/master/ -i <( wget -qO- https://github.com/raspberrypi/firmware/raw/master/boot/ | grep 'react-app.embeddedData' | perl -nE 's{\s+<script[^>]+>}{}; s{</script>}{}; say' | jq -r '.payload.tree.items[].path | select(test("(elf|dat)$"))' )

atomicstack / mac_mdns_query.txt

Created October 8, 2020 18:55

how to query mDNS from the CLI

	muon ~ % dscacheutil -q host -a name rp1-cluster1.local
	name: rp1-cluster1.local
	ipv6_address: fe80:b::dea6:32ff:feba:101f
	ipv6_address: fe80:e::dea6:32ff:feba:101f

	name: rp1-cluster1.local
	ip_address: 10.0.0.167

atomicstack / linux_mdns_query.txt

Created October 8, 2020 18:58

how to query mDNS from the linux CLI

	lepton ~ % sudo apt install -y libnss-mdns avahi-utils
	lepton ~ % avahi-resolve-host-name -4 rp1-cluster1.local
	rp1-cluster1.local 10.0.0.167

atomicstack / rpi-thermals.txt

Created November 2, 2020 00:35

reading thermals for the RPi without needing vcgencmd

	rp1-cluster1 ~ % for zone in /sys/class/thermal/thermal_zone*; do echo -n "$(basename $zone)="; cat $zone/temp \| perl -nE 'printf(qq{%.02fC\n}, ($_/1000))'; done
	thermal_zone0=42.35C

atomicstack / benchmark_finds.sh

Created February 20, 2021 21:58

shitty, biased, unfair, apples-to-oranges benchmark of find against fd

	#!/bin/bash

	set -x

	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real

	#!/bin/bash

	set -x

	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real
	/usr/bin/time -l find $HOME 2>&1 1>/dev/null \| grep -i real

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