title: What does double slash // in `cd //` mean in Linux?
body: <p>I've entered a command <code>cd //</code> instead of <code>cd /</code> by mistake and instead of getting an error as I'd expect the shell (Bash) showed a prompt as if I'm in the <code>//</code> directory:-</p>
  
  <pre><code>&lt;username&gt;@&lt;hostname&gt;://$
  &lt;username&gt;@&lt;hostname&gt;://$ pwd
  //
  </code></pre>
  
  <p>Listing the content of the directory shows that it is the same as <code>/</code>.</p>
  
  <p>So what exactly <code>cd //</code> do and what's the difference from <code>cd /</code>?</p>