How to create a patch baseline on test machine and apply same on the production machine?

Solution Verified - Updated 2024-08-05T08:00:29+00:00 -

Issue

Requirement is to patch number of RHEL5 servers.
Test servers are patched and tested up in advance of production servers. But during in between time some of the patches may themselves be superseded, resulting in the potential to install patches on production servers that have not yet been installed and tested on test servers.
How to create a patch baseline (in the form of a repository) from one of test servers which can then be used to update production servers?

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