Service name = cron
Its job setting can be written in /etc/crontab.
To check the staus of cron,do the following command as root:
service cron status
I added the following line at the end of /etc/crontab
00 3 * * 1 root /root/homebk.sh 2>&1 |tee /root/homebk.log
with /root/homebk.sh as
#!/bin/sh
/usr/bin/rsync -a --delete /home/ /mnt/homebk/
Then, /home/ is rsynced to /mnt/homebk/ every Monday 3:00 pm.
Check whether the scheduled job is executed by the following command:
journalctl -u cron
PS.
I modified /root/homebk.sh as
#!/bin/sh
/usr/bin/rsync -av --delete /home/ /mnt/homebk/
so as to get verbose info of rsync actions.