On Tuesday 29 November 2005 01:12 pm, Chris Smith wrote:
> I had a book I'd just gotten that I left on a Northwest flight.
> (*Automating UNIX and Linux Administration (The Expert's Voice)*
> <http://www.amazon.com/exec/obidos/tg/detail/-/1590592123/ref=ase_kaybee-20
>/102-2787650-1230512?v=glance&s=books>
>
> by Kirk Bauer
> <http://www.amazon.com/exec/obidos/search-handle-url/index=books&field-auth
>or=Bauer%2C%20Kirk/102-2787650-1230512> Great book.) Anyhow, it mentions a
> tool like "diff" to update
> configuration files using shell scripts. I can't for the lift of me
> remember what that utility was, despite much googling. Anyone have any
> idea? I'm reordering the book, but hate to wait.
>
>
> Thanks,
>
> Chris Smith

In Gentoo I use dispatch-conf (http://gentoo-wiki.com/TIP_dispatch-conf) to 
update config files. It is quite awesome. It uses colordiff (if you install 
it) and uses rcs so you can rollback to earlier revisions of your config 
files in case of problems. It is quite nice.