Running nodejs in an actual server.

var express = require("express");var app = express();app.get("/", function(req, res) {
  res.send("Hello World!");
});var server = app.listen(80, function() {
  var host = server.address().address;
  var port = server.address().port;  console.log("GadgetEdge.net listening at http://%s:%s", host, port);
});

apt-get update

apt-get install nodejs

apt-get install npm

npm install pm2 -g

$ pm2 start app.js -i max