title: What does "cd.." mean in powershell?
body: <p>I already know what it does: <strong>It simply goes one directory or folder backwards</strong>.</p>
  <p>But what's mysterious for me are those two dot.</p>
  <pre><code>cd.. #it has the same function as popd with the difference that it changes the 
       #current working directory
  </code></pre>
  <p>If someone tell me what is the philosophy of putting those two <strong>Dots</strong>, i would really appreciate it.</p>