title: How to rename only folders?
body: <p>I have a folder that looks much like this though with many more files and folders:</p>
  <p><img src="https://i.stack.imgur.com/PZSEd.png" alt="" /></p>
  <p>and I want to rename all folders starting with <code>00</code> to add the prefix <code>540-</code> without changing any other file types. So far I've got:</p>
  <p><img src="https://i.stack.imgur.com/Icj99.png" alt="" /></p>
  <p>However while this leaves any files not starting <code>0</code> it renames all the <code>.txt</code> files and any <code>.dwg</code> files that would start with <code>00</code>.</p>
  <p>Is there any easy way of removing all but the folders?</p>