var http = require("http");
var sys = require('util');

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

function onRequest(request, response) { //这是createServer的回调函数（事件驱动）
    console.log("Request received.");
    
    var mon = spawn("ls", ["-l"]);
    var mondata;
    mon.stdout.on('data', function (data) {
        sys.puts(data);
        console.log(data)
        mondata = data
    })
    
    response.writeHead(200, {
        "Content-Type" : "text/plain"
    });
    response.write('aaa' + mondata);
    response.end();
}

http.createServer(onRequest).listen(8888);

console.log("Server has started.");