[lug] back up /etc/passwd

[Rob Nagler]

> While keeping user login data for disaster recovery is undoubtably a 
> good idea, I don't think a list of unencrypted passwords is necessary.  

Having just restored my /etc/passwd and group after accidental
munging, :-( I recommend nightly backups (rsync, tar, or ...) of all
of /etc and /var.  It saved me a lot of trouble to simply restore
these files from backup, and the setup time is trivial.

ROb