jowl

#include <zmq.h>
#include <pthread.h>
#include <assert.h>

static void * worker_routine (void *context) {
  char buf;
  void *socket = zmq_socket (context, ZMQ_PAIR);
  assert( zmq_connect (socket, "inproc://linger") > -1 );
  assert( zmq_send(socket, &buf, 1, 0) > -1); // unblock main thread
  // zmq_recv will block until context is terminated

jowl

#!/usr/bin/env ruby

require 'fileutils'

APP = __FILE__.split('/').last
pwd = Dir.pwd

if ARGV.include? '--enable'
  post_commit = File.join(pwd,'.git/hooks/post-commit')
  abort('post commit hook already exist!') if File.exists?(post_commit)