gistfile1.txt

var repl = require('repl')
  , rl;

rl = repl.start({
    prompt: '>>> '
  , input: process.stdin
  , output: process.stdout
});

rl.on('close', function () {
  console.log('Exiting...');
  process.exit(0);
});


rl.commands['.foo'] = {
  help: "Foo",
  action: function() { console.log('Foo') }
};

console.log(rl.commands) // List of predefined commands