Express set Port in terminal on Development Usave: node app -p *PORT* //eg. node app -p 2222

app.js

"use strict";
var  app, express,  http,  setting;
express = require('express');
http = require('http');
app = express();

// Set Port Here 
//  'node app -p 4444' will listen on port 4444, rails like 
var port = process.argv.indexOf('-p')? +process.argv[process.argv.indexOf('-p')+1]:undefined;
app.set('port', process.env.PORT || port || 4000);

//......

if ('develepment' === app.get('env')) {
    app.use(express.errorHandler());
}
http.createServer(app).listen(app.get('port'), function() {
    console.log('Express server is listing on port ' + app.get('port'));
});