title: What's the max amount of files per directory? (Linux)
body: <p>I have to store a lot of image files, but I'm not sure about how to organize my directory structure.</p>
  
  <p>Is there a limit of files per directory, or directories per directory?</p>
  
  <p>Also, should I create the filenames randomly so they are not guessable? (so I don't get my bandwith hammered by someone trying to download all the files)</p>