node api

process.js

// global object 
console.log(process);

process.on('uncaughtException', function(err) {
  console.log('Caught exception: ' + err);
});

setTimeout(function() {
  console.log('This will still run.');
}, 500);

// Intentionally cause an exception, but don't catch it.
nonexistentFunc();

// kill itself
process.kill();


process.on('exit', function(){
	console.log('time to exit');
});

// listen evertime for data
process.stdin.on('data', function(chunk){
	console.log(chunk.toString());
});


// another way for echo terminal
process.stdin.on('data', function(chunk){
	process.stdout.write(chunk.toString());
});


// for once if only readable
process.stdin.on('readable', function() {
  console.log('yes it is readable.');
});

// current location
process.cwd();

// step back
process.chdir('..');

// EMIT exit and abort respectively
process.exit();
process.abort();

//try-catch block
try {
	process.stdout.destroy();
} catch(e) {
	console.log('**************');
	console.log(e);
	console.log('**************');
}

// kill a pid
process.kill(22615)