title: Keep alive express process after close the terminal
body: <p>I'm trying to keep live a process after close the terminal.
  Is a node.js project with express.
  Basically, for other process I kept alive processes with:</p>
  
  <pre><code>$ node server.js &amp;
  </code></pre>
  
  <p>I with that, was possible finish the SSH connection and close the console.
  But with express, I started my process with:</p>
  
  <pre><code>$ npm start &amp;
  </code></pre>
  
  <p>And always, after one request, the process died. 
  Exist a way to keep the process alive?
  I'm using EC2, with a Ubuntu instance.</p>