rsync src_user@src_hostname:src_dir/ trg_user@target_hostname:target_dir/

rsync --help

man rsync

$ ssh-keygen

$ ssh-copy-id -i /root/.ssh/id_rsa.pub root@server-ip:

#!/bin/bash
## Rsync script
###
PATH=/usr/bin:
rsync -auvz root@server-ip:/path/to/directory/ /backup-server/path/to/backup/