How can I see all packages available for installation from Red Hat Network?
Updated -
From a Terminal, run "up2date --show-available" This will print a list of all packages that are not presently installed that are available from Red Hat Network (RHN) for the system, per your channel subscriptions.
An example of a search for a specific package would be:
$ up2date --show-available > /tmp/avail
$ grep c++ ...Subscriber exclusive content
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