lame.js

function shutdown() {
  var times = 0;

  process.on('SIGINT', function(){
    trapped('INT'); 
  });

  process.on('SIGQUIT', function(){
    trapped('QUIT'); 
  });

  function trapped(sig) {
    switch (++times) {
      case 1:
        console.log('signal received: %s', sig);
        break;
      case 2:
        console.log('second signal received: %s', sig);
        console.log('forcing exit');
        process.exit(1);
        break;
    }
  }
}