title: linux-shell: renaming files to creation time
body: <p>Good morning everybody,</p>
  
  <p>for a website I'd like to rename files(pictures) in a folder from "1.jpg, 2.jpg, 3.jpg ..." to "yyyymmdd_hhmmss.jpg" - so I'd like to read out the creation times an set this times as names for the pics. Does anybody have an idea how to do that for example with a linux-shell or with imagemagick?</p>
  
  <p>Thank you!</p>