Jan 'Maub' Kapellen matschundbrei

About

This gist will show how to setup Raspbian Stretch as a headless Bluetooth A2DP audio sink. This will allow your phone, laptop or other Bluetooth device to play audio wirelessly through a Rasperry Pi.

Motivation

A quick search will turn up a plethora of tutorials on setting up A2DP on the Raspberry Pi. However, I felt this gist was necessary because this solution is:

Automatic & Headless - Once setup, the system is entirely automatic. No user iteration is required to pair, connect or start playback. Therefore the Raspberry Pi can be run headless.
Simple - This solution has few dependencies, readily available packages and minimal configuration.
Up to date - As of December 2017. Written for Raspbian Stretch & Bluez 5.43

Prerequisites

Shell Keybindings

Navigation 🚀

Keybinding	Action
`Alt` + `f/b`	Move cursor to previous/next word
`Ctrl` + `a/e`	Move cursor to beginning/end of command
`Ctrl` + `xx`	Toggle between the start of line and current cursor position

A Short IPv6 Guide for Home IPv4 Admins

This guide is for homelab admins who understand IPv4s well but find setting up IPv6 hard or annoying because things work differently. In some ways, managing an IPv6 network can be simpler than IPv4, one just needs to learn some new concepts and discard some old ones.

Let’s begin.

First of all, there are some concepts that one must unlearn from ipv4:

Concept 1

	# put this file in /etc/systemd/system/ as root
	# below paths assume solr installed in /opt/solr, SOLR_PID_DIR is /data
	# and that all configuration exists in /etc/default/solr.in.sh which is the case if previously installed as an init.d service
	# change port in pid file if differs
	# note that it is configured to auto restart solr if it fails (Restart=on-faliure) and that's the motivation indeed :)
	# to switch from systemv (init.d) to systemd, do the following after creating this file:
	# sudo systemctl daemon-reload
	# sudo service solr stop # if already running
	# sudo systemctl enable solr
	# systemctl start solr

	#!/bin/bash
	#
	# You can set up sSMTP by setting the following ENV variables:
	#
	# SSMTP_TO - This is the address alarms will be delivered to.
	# SSMTP_SERVER - This is your SMTP server. Defaults to smtp.gmail.com.
	# SSMTP_PORT - This is the SMTP server port. Defaults to 587.
	# SSMTP_USER - This is your username for the SMTP server.
	# SSMTP_PASS - This is your password for the SMTP server. Use an app password if using Gmail.
	# SSMTP_TLS - Use TLS for the connection. Defaults to YES.

	#! /usr/bin/env ruby

	# NOTE: Requires Ruby 2.1 or greater.

	# This script can be used to parse and dump the information from
	# the 'html/contact_info.htm' file in a Facebook user data ZIP download.
	#
	# It prints all cell phone call + SMS message + MMS records, plus a summary of each.
	#
	# It also dumps all of the records into CSV files inside a 'CSV' folder, that is created


	# https://stackoverflow.com/questions/39928401/recover-db-password-stored-in-my-dbeaver-connection

	# requires pycryptodome lib (pip install pycryptodome)

	import sys
	import base64
	import os
	import json
	from Crypto.Cipher import AES