title: Rename all files in folder to uppercase with batch
body: <p>Is there a way to rename all files in a specific folder to uppercase with batch file?<br>
  I found this code. But it renames files to lowercase. How to modify it to rename to uppercase instead?</p>
  
  <pre><code>for /f "Tokens=*" %f in ('dir /l/b/a-d') do (rename "%f" "%f")
  </code></pre>