title: How to change file permission for all sub-directories (CHMOD)
body: <p>I've a directory, inside which I've multiple directories each containing several image files.</p>
  
  <p>I want to change the file permissions to 755 for <strong>all</strong> the sub-directories <strong>and</strong> the image files inside them.</p>
  
  <p>I'm using WinSCP to connect to the server. So how do I change the file permissions in one go as I can't keep changing one by one since there are lots of files.</p>