Backup with versioning

[Bob Alexander <bob@ngi.it>]

In my neverending tweaking of the system I would like to setup a backup 
cron job which would not only (possibly incrementally) save the files or 
directories I indicate, but for /etc and /home would keep the revisions 
of the files in a versioning schema (like rcs, cvs etc.) so that I have 
the possibility of going back to some previous state of the file.

Any ideas ?

Thank you very much,
Bob Alexander