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

http.createServer(onRequest).listen(4000);

function onRequest(request, response)
{
    response.writeHead(200, {'Content-Type' : 'text/plain'});

    var tail_child = spawn('tail', ['-f', '/var/log/system.log']);

    tail_child.stdout.on('data', onData);

}

function onData(data)
{
    console.log(data.toString());
    response.write(data);
}