title: How to loop through files in all sub directories?
body: <p>In <code>perl</code> I can loop through the files in the current directory by doing the following:</p>
  
  <pre><code>foreach $file (&lt;*.*&gt;) {
          print "$file found\n";
          # do stuff
  }
  </code></pre>
  
  <p>How can I do the same thing but to all files in all sub-directories?</p>