title: Run bash script on schedule
body: <p>I have some problem with bash script. I need to add some content to it. My script need to run at a certain time but I don't know how to do that. It should work like this:
  I have a variable then I assign a time like 3200s. When I run the program, then the script will create backups every 3200s but only if some files changed. What am I doing wrong?</p>
  
  <pre><code>!/bin/bash
  
  SOURCE="/var/www/my_web/load/"
  BACKUP="/home/your_user/load/"
  LBACKUP="/home/your_user/load/latest-full/"
  
  DATE=$(date +%Y-%m-%d-%T)
  
  DESTINATION="$BACKUP"/"$DATE"-diff/
  
  rsync -av --compare-dest="$LBACKUP" "$SOURCE" "$DESTINATION"
  
  cd "$DESTINATION"
  find . -depth -type d -empty -delete
  </code></pre>