greenlock.js/bin/greenlock.js

#!/usr/bin/env node
'use strict';

var args = process.argv.slice(2);
var arg0 = args[0];
//console.log(args);

['certonly', 'add', 'config', 'defaults', 'remove'].some(function(k) {
    if (k === arg0) {
        require('./' + k);
        return true;
    }
});

console.error(arg0 + 'command not yet implemented');
process.exit();