title: Mass file renaming - PowerShell
body: <p>I have many files in a folder with this format </p>
  
  <pre><code>constant_blah_blah_blah.png
  </code></pre>
  
  <p>How can I replace the underscores with spaces and also remove the constant_ from them using PowerShell?</p>
  
  <p>Thanks in advance.</p>