I'm using Ubuntu server 14.04 to backup all data from '/mnt/test/ folder' to '/home/john/' with TAR and archive to stuff.tar.gz and to make it to backup automatical. I use cron to backup it every week so what if i want to use cron to create an additional backup file instead of overwriting the existing one? So, after month I'd have 4 backups, each with a unique name. Is there a way? Script ar other backup tool what would do that?