Simple backups

[schnitzel meister <schnitzelmeister@gmail.com>]

Hello.
I have lots of hosts running Sarge.
The data on each of the hosts is generally in a defined location, the
rest of the machine is the same.

I would like to run a regular job on each host to create an archive of
just these
unique files, as defined by a file which might look like:

/etc/postfix/
/etc/someconfig.conf

The archive would be collected by a remote scp nightly.

I cannot find a package which does this task, I wondered if anyone
could suggest one?
If not, I'll write a script. Thanks.