Rsync

See Archwiki:rsync and rsync(1) - Linux man page

System Backups

• Create a script and add it to your crontab -e

Basic Backup

#!/bin/bash

TARGET_FOLDER=<your target for backup>
EXCLUSIONS='--exclude={"/dev/*","/proc/*","/sys/*","/tmp/*","/run/*","/mnt/*","/media/*","/lost+found"}'

sudo rsync -aAXq /  ${EXCLUSIONS} \ "${TARGET_FOLDER}"

Flags

• -a archive mode
• -A preserve ACLs (access control lists)
• -X preserve extended attributes
• -q quiet