title: How to run ngrok in background?
body: <p>I tried running ngrok in the background with following command:</p>
  <pre><code>./ngrok -subdomain test -config=ngrok.cfg 80 &amp;
  </code></pre>
  <p>the process is running:</p>
  <pre><code>[1] 3866
  </code></pre>
  <p>and the subdomain doesn't work.</p>
  <p>It works with:</p>
  <pre><code>./ngrok -subdomain test -config=ngrok.cfg 80
  </code></pre>
  <p>Does anyone know what is going wrong here?</p>
  <p>Thank you.</p>