title: Manually Running Shell Script for sending new files notification emails
body: <p>this is just for learning purpose. (don't consider inotify)</p>
  
  <p>what if we want to develop a bash shell script which compare file list of previous run and current run, when ever we run the script manually and email file name file size time of new files only.</p>
  
  <p><i></i>  </p>