Luis Rodil-Fernandez dropmeaword

Running processing without a screen

Let's say you want to run a Processing sketch on a server. Like maybe you want to generate several million PDF and JPEG images using a handful of Amazon EC2 instances.

This is called “headless” mode, and to do so, it's necessary to install what's known as a virtual frame buffer.

On Ubuntu 14.04, these are the things you need to install first:

sudo apt-get install xvfb libxrender1 libxtst6 libxi6

Notes from the group discussion around this question:

Download the Raspbian image from:

It's a big zip file, you only need to do this one.

Open a terminal and go to your downloads directory:

cd Downloads

	-- Bring all Finder windows to front
	function applicationWatcher(appName, eventType, appObject)
	if (eventType == hs.application.watcher.activated) then
	if (appName == "Finder") then
	-- Bring all Finder windows forward when one gets activated
	appObject:selectMenuItem({"Window", "Bring All to Front"})
	end
	end
	end
	local appWatcher = hs.application.watcher.new(applicationWatcher)

	enum state {
	stWAITING,
	stUP,
	stDOWN,
	};

	int THRESHOLD = 250; // LDR sensor reading
	long TIMEOUT = (5+3)1000; // this is milliseconds so that's secs 1000

	// 8..13 are relays

	import pathfinder.*;

	Graph[] gs = new Graph[4];
	PImage[] graphImage = new PImage[4];
	int start[] = new int[4];
	int end[] = new int[4];
	float nodeSize[] = new float[4];

	int graphNo = 0;
	int algorithm;

	function parse_git_branch () {
	git branch 2> /dev/null \| sed -e '/^[^]/d' -e 's/ \(.*\)/ (\1)/'
	}

	YELLOW="\[\033[0;33m\]"
	# Comment in the above and uncomment this below for a color prompt
	PS1="${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w$YELLOW\$(parse_git_branch)\[\033[00m\]\$ "

	export CLICOLOR=1
	export LSCOLORS=ExFxBxDxCxegedabagacad