[COLUG] Finding out which updates have been applied to a Red Hat system?

[Peter Kukla]

Hello all,

Is there any way to tell at a glance what updates have
been applied to a Red Hat 7.x system?

This is a system maintained by a new-to-Linux friend,
who has inherited it from a former co-worker.

The server lost a disk, and they've reloaded the OS
from CD, now they want to get the OS in sync with how
it had been before.  They have a file listing of the
pre-crash system which they can use for comparison.

(My personal suggestion would be to simply upgrade
this dinosaur, but that's apparently not an option,
although I don't know why.)

Any ideas?

Thanks in advance for any & all suggestions.


Peter