#!/bin/sh

browser="google-chrome"

mkdir node_server
cd node_server

if [ ! -f "/usr/bin/nodejs" ]
then
  sudo apt-get install nodejs
fi

npm install --save express@4.10.2

echo """
var express = require('express')
var app = express()

app.get('/', function (req, res) {
  res.send('<h1>Hello World!</h1>')
  console.log("Someone Connected and I said Hello!!!");
})

app.get('/dir', function (req, res) {
  var exec = require('child_process').exec;
  exec('find /usr', function (error, stdout, stderr) {
    // output is in stdout
    res.send(stdout)
  });

})

var server = app.listen(3000, function () {

  var host = server.address().address
  var port = server.address().port

  console.log('Example app listening at http://%s:%s', host, port)

})
""" > server.js

$browser "http://127.0.0.1:3000"
nodejs server.js