demos/Demo/Day3/Scaling/1-child_spawn_parent.js

var spawn=require('child_process').spawn;

var child1=spawn('node',['2-child_spawn_chil.js']);

child1.stdin.write('Hello');

child1.stdout.on('data',function(data){
console.log('Received a reply: '+data);
});

child1.stderr.on('data',function(data){
console.log('Error: '+data);
});

child1.on('exit',function(exitCode){
console.log("Child exited :"+exitCode);
});