Leandro Lisboa Penz lpenz

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Programming language enthusiast with Rust and Haskell adventures - and 20+ years of professional embedded C programming with a lot of python.

lpenz / pa-monofy-stereo

Last active March 26, 2017 18:54

Join audio sink channels into a single mono channel, for stereo audio files with sound in only a channel

	#!/bin/bash

	set -e -x

	pacmd load-module module-remap-sink sink_name=mono master=$(pacmd list-sinks \| grep -m 1 -oP 'name:\s<\K.*(?=>)') channels=2 channel_map=mono,mono

lpenz / ansible-apt-repos

Last active November 4, 2021 02:47

Install apt repositories with ansible

	#!/bin/bash

	set -x -e -o pipefail

	: for deb-multimedia keyring, browse http://www.deb-multimedia.org/pool/main/d/deb-multimedia-keyring/deb-multimedia-keyring
	ansible -i localhost, -c local localhost -m apt_repository -a 'repo="deb http://www.deb-multimedia.org stable main non-free"'
	ansible -i localhost, -c local localhost -m apt_repository -a 'repo="deb http://www.deb-multimedia.org testing main non-free"'
	ansible -i localhost, -c local localhost -m apt_repository -a 'repo="deb http://www.deb-multimedia.org unstable main non-free"'

	: for dropbox

lpenz / winclick

Created November 17, 2016 13:55

Click a window selected by name; uses xwininfo and xdotool

	#!/bin/bash

	WINNAME="${1?usage: "$0" windowname}"

	set -e

	TMP=$(mktemp)
	trap 'rm -f $TMP' EXIT

	eval "$(xdotool getmouselocation --shell)"

lpenz / img2vagrant

Created October 5, 2016 17:12

Create a package.box for vagrant (virtualbox) from the specified raw img file

	#!/bin/bash

	IMG=${1?usage: $0 <img>}
	NAME=wheezy32

	set -e -x

	rm -f "${IMG}.vmdk" package.box
	VBoxManage convertfromraw "$IMG" "${IMG}.vmdk" --format vmdk
	VBoxManage unregistervm "$NAME" --delete \|\| :

lpenz / debootstrap-vagrant

Last active October 4, 2016 22:22

Use debootstrap to create a chroot that can be turned into a vagrant-compatible (virtualbox, wheezy 32) VM

	#!/bin/bash

	DIR=${1?usage: $0 <dir>}
	NAME=${DIR##*/}

	set -e -x

	rm -rf "$DIR"

	trap 'set +e; umount "$DIR/proc"; umount "$DIR/sys"; rm -rf "$DIR"' EXIT INT

lpenz / dir2img

Last active April 22, 2019 16:24

Script that creates a bootable qcow2 img with a directory's contents - installs mbr and extlinux

	#!/bin/bash

	DIR=${1?usage: $0 <dir> <img>}
	OUT=${2?usage: $0 <dir> <img>}

	set -e -x

	rm -f "$OUT"
	trap 'rm -f $OUT' EXIT INT
	virt-make-fs --partition=mbr --type=ext3 --format=raw --size=+300M "$DIR" "$OUT"

lpenz / Vagrantfile-aws

Last active March 4, 2019 15:26

Vagrantfile for AWS with sshfs

	# -- mode: ruby --
	# vi: set ft=ruby :

	Vagrant.configure('2') do \|config\|
	config.vm.box = 'dummy'
	config.ssh.forward_agent = 'true'

	config.vm.synced_folder '.', '/vagrant', type: 'sshfs' # only works with ubuntu

	config.vm.provider :aws do \|aws, override\|

lpenz / livedeb

Last active June 25, 2019 14:02

Creates a live debian on the provided (already partitioned) device

	#!/bin/bash

	DEV=${1?must specify a device}

	function finish {
	for d in boot dev/pts dev proc sys; do
	if test -d "$PWD/usbroot/$d" && mount \| grep -q "$PWD/usbroot/$d"; then
	umount "$PWD/usbroot/$d"
	fi
	done

lpenz / .travis.yml

Created February 21, 2016 12:22

Test .gitignore in travis

	script:
	- true TESTS RUN HERE
	- true Test if we .gitignore test files
	- TMP=$(tempfile)
	- git ls-files . --exclude-standard --others \| tee "$TMP"
	- if test -s "$TMP"; then false; else true; fi
	- true Test if we .gitignore any tracked files
	- git ls-files -i --exclude-standard \| tee "$TMP"
	- if test -s "$TMP"; then false; else true; fi

lpenz / docker-gc

Last active April 18, 2016 19:48

Docker garbage collector

	#!/bin/bash

	set -x -e

	: gc conteiners
	docker ps --filter 'status=exited' -q \| xargs -r docker rm
	docker ps --filter 'status=created' -q \| xargs -r docker rm

	: gc images
	docker images --filter "dangling=true" -q \| xargs -r docker rmi