Where are packages cached localy on the machine that installs them?

[stan]

I want to make one machine the "master" for packages, so once I have
downloaded them, I cna NFS mount that location on other machines, and avoid
them having to also download the same pacages before installing them.

I assume that if I try to install a package, this loaction is checked
first. right? Alos, how can I share the lisy fo available packages thet is
created by an apy-get update?

The big picture here is to create a situation where only one machine at a
particular loacation need internet access, and all of it's brothers ate are
to share the vaialble packages, without them having to directly access the
internet. (Yes it's a stupid requirent).

-- 
Unix is very simple, but it takes a genius to understand the simplicity.
(Dennis Ritchie)