Red Hat Command to show versions

[Brendan Coffey]

Is there a command I can issue that will show all patches/updates that have been installed on the system?  Something similar to showrev -p in a Solaris system?

[jimmy fonga]

if you have been using yum to automatically or manually update your system type:
su
password
less /var/log/yum.log

[Addy]

Try
$ rpm -qa

and you will see all installed rpm-packages.