Skip to content

Instantly share code, notes, and snippets.

@sultanqasim
sultanqasim / zram.sh
Created June 21, 2016 02:41
ZRAM config for Raspberry Pi 3
#!/bin/bash
# Raspberry Pi ZRAM script
# Tuned for quad core, 1 GB RAM models
# put me in /etc/init.d/zram.sh and make me executable
# then run "sudo update-rc.d zram.sh defaults"
modprobe zram
echo 3 >/sys/devices/virtual/block/zram0/max_comp_streams
echo lz4 >/sys/devices/virtual/block/zram0/comp_algorithm
@bmweiner
bmweiner / sonos_airplay.md
Last active June 11, 2025 11:01
Stream audio to any Sonos component via AirPlay using a Raspberry Pi.

Sonos Airplay

Stream audio to any Sonos component via AirPlay using a Raspberry Pi (Model B, Raspbian Jessie) and the following software:

  • Shairport Sync: configures the Raspberry Pi as an AirPlay audio player.
  • DarkIce: encodes audio received from AirPlay (system audio) and sends it to Icecast2.
  • Icecast2: serves streaming audio from DarkIce at a network URL.
@nepsilon
nepsilon / how-to-git-patch-diff.md
Last active September 11, 2025 23:09
How to generate and apply patches with git? — First published in fullweb.io issue #33

How to generate and apply patches with git?

It sometimes happen you need change code on a machine from which you cannot push to the repo. You’re ready to copy/paste what diff outputs to your local working copy.

You think there must be a better way to proceed and you’re right. It’s a simple 2 steps process:

1. Generate the patch:

git diff > some-changes.patch
@drmalex07
drmalex07 / README-setup-tunnel-as-systemd-service.md
Last active October 11, 2025 22:00
Setup a secure (SSH) tunnel as a systemd service. #systemd #ssh #ssh-tunnel #ssh-forward

README

Create a template service file at /etc/systemd/system/secure-tunnel@.service. The template parameter will correspond to the name of target host:

[Unit]
Description=Setup a secure tunnel to %I
After=network.target
@n1trux
n1trux / linux_lightsout.bash
Last active January 2, 2018 00:36
lightsout for linux (suspend when no network activity for 1 hour)
#!/bin/bash
########################################################################
# LIGHTS OUT FOR LINUX (lofl) #
# This script suspends the computer if it's idle for a given period of #
# time. It monitors network activity, logged on users and CPU load. #
########################################################################
# maximum packet count per minute – usually not more than 12-15
net_threshold=12
# This script work on any system using systemd as the init process.
# It works on Debian/Raspbian Jessie.
# If you have Debian/Rapbian Wheezy and want to use this script with systemd
# follow the information here : https://wiki.debian.org/systemd
# To easily download, install and set at startup:
# wget -O /tmp/download https://gist.github.com/biddster/9a700b0974f3a7b7a34e/download && sudo tar -zxf /tmp/download --strip-components 1 -C /etc/systemd/system/ && sudo systemctl --reload-daemon && sudo systemctl enable Node-RED
# To consult the log : journalctl -u Node-RED
[Unit]
@alexjj
alexjj / ZFS Snapshot Deletion
Created April 15, 2015 17:09
Delete all ZFS Snapshots
zfs list -H -o name -t snapshot | xargs -n1 zfs destroy
@seltzered
seltzered / gist:3b627104c8a7a39b863c
Last active October 21, 2022 18:17
Mac OSX Set Sound Output to Internal Speakers.applescript
-- Script to set sound output - "Internal Speakers" hardcoded as I just keep multiple scripts for each output source (e.g. Internal Speakers, Airplay, bluetooth ) and use it with a quicklaunch app such as quicksilver.
-- Based off of Pierre L's answer in https://discussions.apple.com/thread/4629093?tstart=0 , which includes a selection dialog
set asrc to "Internal Speakers"
tell application "System Preferences"
reveal anchor "output" of pane id "com.apple.preference.sound"
activate
@artembeloglazov
artembeloglazov / qemu-ifdown
Last active August 4, 2020 07:32 — forked from EmbeddedAndroid/qemu-ifup
Mac OSX (10.8.X) scripts for QEMU/KVM bridged networking with nat on en1.
#!/bin/bash
echo "Executing /etc/qemu-ifdown"
echo "Bringing TAP interface down"
ifconfig $1 down
echo "Removing interfaces"
ifconfig bridge0 deletem en1 deletem $1
echo "Bring down bridge"
ifconfig bridge0 down
echo "Removing bridge"
ifconfig bridge0 destroy