Howtoforge published a guide about setting up scheduled backups with Rsyncbackup on Debian 4.0
>> Scheduled Backups With Rsyncbackup On Debian Etch
This document describes how to set up and configure rsyncbackup on Debian Etch. Rsyncbackup is a Perl script that cooperates with rsync. It is easy to configure and able to create scheduled backups (partial and incremental backups).
>> Scheduled Backups With Rsyncbackup On Debian Etch