Alexandre Espinosa Menor alexandregz

Using cec-client on a Raspberry Pi

Most modern HDMI connected devices support Consumer Electronics Control (CEC). It allows devices to send commands to each other, typically to get the TV to switch input and control volume. If you have ever turned on a Game Console and had your TV automatically change input to that device you have seen CEC in action. It is very convenient and useful, sort of a universal remote that works.

Every manufacturer seems to have it’s own branding of CEC (e.g. Samsung Anynet+, LG SimpLink, Sharp Aquos Link) but it may need to be enabled. Check your manual for details.

Using a Raspberry Pi connected to a TV that supports CEC, you can use the command line cec-client application to control the inputs and the TV itself. These are notes on how to use cec-client and understand the different options.

Details

It's not immediately obvious how to pull down the code for a PR and test it locally. But it's pretty easy. (This assumes you have a remote for the main repo named upstream.)

Getting the PR code

Make note of the PR number. For example, Rod's latest is PR #37: Psiphon-Labs/psiphon-tunnel-core#37
Fetch the PR's pseudo-branch (or bookmark or rev pointer whatever the word is), and give it a local branch name. Here we'll name it pr37:

$ git fetch upstream pull/37/head:pr37

It's not immediately obvious how to pull down the code for a PR and test it locally. But it's pretty easy. (This assumes you have a remote for the main repo named upstream.)

Getting the PR code

Make note of the PR number. For example, Rod's latest is PR #37: Psiphon-Labs/psiphon-tunnel-core#37
Fetch the PR's pseudo-branch (or bookmark or rev pointer whatever the word is), and give it a local branch name. Here we'll name it pr37:

$ git fetch upstream pull/37/head:pr37

	version: '3'
	services:
	homeassistant:
	container_name: homeassistant
	image: "ghcr.io/home-assistant/home-assistant:stable"
	volumes:
	- /docker/homeassistant:/config
	- /etc/localtime:/etc/localtime:ro
	- /run/dbus:/run/dbus:ro
	restart: unless-stopped

	#!/bin/bash

	if [ "$1" = "-h" -o "$1" = "--help" -o -z "$1" ]; then cat <<EOF
	appify v3.0.1 for Mac OS X - http://mths.be/appify
	Creates the simplest possible Mac app from a shell script.

	Appify takes a shell script as its first argument:

	`basename "$0"` my-script.sh

	# YouTube (english) : https://www.youtube.com/watch?v=FtU2_bBfSgM
	# YouTube (french) : https://www.youtube.com/watch?v=VjnaVBnERDU

	#
	# On your laptop, connect to the Mac instance with SSH (similar to Linux instances)
	#
	ssh -i <your private key.pem> ec2-user@<your public ip address>

	#
	# On the Mac

	#!/bin/sh

	# https://www.librebyte.net/despliegue-de-sistemas/como-instalar-debian-de-forma-automatica-o-desatendida/
	# a partir de passo 6, umah vez creado o pressed.cfg

	chmod +w -R isofiles/install.amd/
	gunzip isofiles/install.amd/initrd.gz
	echo preseed.cfg \| cpio -H newc -o -A -F isofiles/install.amd/initrd
	gzip isofiles/install.amd/initrd
	chmod -w -R isofiles/install.amd/

	import android.annotation.TargetApi;
	import android.content.Context;
	import android.content.res.Resources;
	import android.graphics.Canvas;
	import android.graphics.Color;
	import android.graphics.Paint;
	import android.graphics.Typeface;
	import android.os.Build;
	import android.util.AttributeSet;
	import android.widget.ImageView;

	_ssh_auth_save() {
	ln -sf "$SSH_AUTH_SOCK" "$HOME/.ssh/ssh-auth-sock.$HOSTNAME"
	}
	alias screen='_ssh_auth_save ; export HOSTNAME=$(hostname) ; screen'
	alias tmux='_ssh_auth_save ; export HOSTNAME=$(hostname) ; tmux'