gistfile1.txt

var http = require('http'),
	url = require('url'),
	fs = require('fs'),
	io = require('./lib/'),
	sys = require('sys');

var iostat = require('child_process').spawn("iostat",["-w 1"]);

send404 = function(res){
	res.writeHead(404);
	res.write('404');
	res.end();
};
// Format iostat date
function format (data){
	var output_data = data.toString();
	sys.log(output_data);
	header = 'disk0            cpu       load average';
	if (output_data.match(header)){
		sys.log("ignore header");
	}else{
		var output_array = output_data.replace(/^\s+|\s+$/g,"").split(/\s+/);
		for (var i=0; i < output_array.length; i++){
			output_array[i] = parseFloat( output_array[i]);
		};
		output_hash = {
			date:new Date(),
				 disk:{
					kpt:output_array[0],
					tps:output_array[1],
					mbs:output_array[2]
				},
				cpu:{
					us:output_array[3],
					sy:output_array[4],
					id:output_array[5]
				},
				load_average:{
					m1:output_array[6],
					m5:output_array[7],
					m15:output_array[8]
				}
		}
		return JSON.stringify(output_hash);
	}
}
// HTTP SERVER SETUP
/*server = http.createServer(function(req,res){
		var path = url.parse(req.url).pahtname;
		switch (path){
			case '/':
				res.writeHead(200, {'Content-Type': 'text/html'});
				res.write('<h1>Welcome to System Monitor</h1>');
				res.end();
				break;
			default:
				if (/\.(js|html|swf)$/.test(path)){
					try {
						var swf = path.substr(-4) === '.swf';
						res.writeHead(200, {'Content-Type': swf ? 'application/x-shockwave-flash' : ('text/' + (path.subsr(-3) === '.js' ? 'javascript' : 'html'))});
						fs.readFile(__dirname + path, swf ? 'binary' : 'utf8', function(err, data){
							if (!err) res.write(data, swf ? 'binary' : 'utf8');
							res.end();
						});
					}catch(e){
						send404(res);
					}
					break;
				}
				send404(res);
				break;
		}
});*/
var server = http.createServer(function(req,res){
     res.writeHead(200,{'Content-Type':'text/plain'});
});

// set port for server
server.listen(9000);
// configure socket.io
var io = io.listen(server),
		buffer = [];
io.on('connection',function(client){
		console.log("opened connection: "+client.id);
		client.send(client.id, "Connected as: " +conn.id);
		iostat.stdout.on('data',function(data){
			console.log(typeof(data));
			console.log('stdout: '+data);
			console.log('stdout: '+format(data));
			client.send(client.id, format(data));
		});
		client.send(client.id, "Connected as: "+client.id);

		client.on('disconnect',function(client){
			console.log("closed connection: "+client.id);
			client.broadcast("<"+client.id+"> disconnected");
		});
});