MondoArchive is an excellent backup tool found in Linux. However, the installation process is not obviously clear in debain- it lacks of a simple clue to let you know how to install in the easiest way in debian by using 'apt-get'.
All you need is to add this simple repository to add in your /etc/apt/sources.list file-
deb ftp://ftp.mondorescue.org/debian 6.0 contrib
apt-get install mondo
There you go… it is installed 🙂