iBackup simplifies the task of backing up the system configuration
files (those under /etc) for Solaris, *BSD, and Linux systems. You
can run it from any directory and it will, by default, save the (maybe
compressed) tarball to /root. It is possible to encrypt the tarball,
to upload the tarball to another host, and to run the backup automated
in a cron job. You can also create a nice HTML summary of a system
using the included sysconf.