title: Changing file extension using ruby
body: <p>I have a list of .eml files which are in a remote folder say</p>
  
  <pre><code>\\abcremote\pickup
  </code></pre>
  
  <p>I want to rename all the files from</p>
  
  <pre><code>xyz.eml to xyz.html
  </code></pre>
  
  <p>Could you guys help me do that using ruby.</p>
  
  <p>Thanks in advance.</p>