updating RPM directory

[Stephen Mah <steve.mah@xxxxxxxxxx>]

I think I've asked before, but can't seem to find that email.

Does anyone have a script to update an existing directory with newer 
rpms from a given folder?

For example, I have an RPM folder with customizations, and I want to 
update the RPMS from a directory that has update 1 plus newer erratas?
Does anyone have such a script, before I try to write one?

thanks
steve