Yum on several machines

[Timothy Murphy]

I know this question has been asked, and answered,
many times before, but I cannot find a reference at the moment.

I want to yum-update on several machines,
and I want to avoid repeatedly downloading the same packages.
So what I want when I run "yum update" on machine A
is for it to look for RPMs in a specified directory
(perhaps mounted through NFS on all machines)
and use these RPMs if they exist rather than downloading them.