title: How to use multiple double-dash(--) in one command line
body: <p>for example</p>
  
  <pre><code>ssh root@me -- cat /etc/hostname -- cat /etc/hostname
  </code></pre>
  
  <p>I expect it output:</p>
  
  <pre><code>me
  me
  </code></pre>
  
  <p>but it output</p>
  
  <pre><code>me
  me
  cat: cat: No such file or directory
  </code></pre>
  
  <p>I know the double-dash means ending parsing option, why it raise <code>cat: cat: No such file or directory</code></p>