demos/Demo/Day2/2-FileSystem/4.readablestream2.js

var fs=require('fs');
var readStream=fs.createReadStream('test.txt');
var data='';
var chunk;

readStream.on('readable',function(){
	while((chunk=readStream.read())!=null)
		data+=chunk;
});
	
readStream.on('end',function(){
	console.log(data);
});