Linux: daily backup with crontab

=> crontab -l
0 15 * * * rsync -arvu --delete-excluded --exclude /home/dyuan/Download  /home/dyuan/ /media/dyuan/pluto-home-backup/

Ref:
https://www.runoob.com/linux/linux-comm-crontab.html
https://linuxtools-rst.readthedocs.io/zh_CN/latest/tool/crontab.html