title: how to run node.js app from cmd with some predefined port in Windows
body: <p>Is it some command exist to run my node.js code with directly specified port?
  something like <code>node server.js port=7777</code> ?</p>
  
  <p>my server.js code looks like this</p>
  
  <pre><code>http.createServer(function (req, res) {
    if (mount(req, res)) return;
  }).listen(process.env.PORT || 80);
  </code></pre>