Hello Jeff,   
      
   On Tue Jan 10 2017 22:47:00, Jeff Smith wrote to Tony Comandini:   
      
    JS> For a task to be run every 20 minutes I would simply use a crontab   
    JS> line as:   
      
    JS> */20 * * * * //   
      
    JS> You could for example use the cron line to run a backup of all your   
    JS> user accounts at 5 a.m every week with:   
      
    JS> 0 5 * * 1 tar -zcf /var/backups/home.tgz /home/   
      
   As you mention in your first crontab line, it is good practice to use the full   
   path to the program or script in crontab. So your second line would be better   
   with: /bin/tar, or /usr/bin/tar - even though tar is most likely in your   
   system PATH settings.   
      
   Regards,   
   Nick   
      
   ... "Не знаю. Я здесь только работаю."   
   --- GoldED+/LNX 1.1.5-b20161221   
    * Origin: thePharcyde_ distribution system (Wisconsin) (1:154/10)