Simple backups of remote machines using rsync
crontab:
39 3 * * * ionice -c2 -n7 backup.sh example1:/mnt/mirror backups/example1
39 4 * * * ionice -c2 -n7 backup.sh example2:r /home/example2/backups
.ssh/config:
host example1
hostname example.com
identityfile backup_id_rsa
host example2
user exampleuser
hostname example.org