title: Sorting lines from longest to shortest
body: <p>How can I rearrange all of the lines in a file from longest to shortest? For e.g.:</p>
  
  <pre><code>elephant
  zoo
  penguin
  </code></pre>
  
  <p>Would be changed to</p>
  
  <pre><code>elephant
  penguin
  zoo
  </code></pre>