"YUM is a package manager and updater service for Red Hat Linux,
and if you're part of the Red Hat Network, you're likely already
using the offering to keep your applications fresh. YUM makes sure
your various server components are as up to date as they can be,
bringing you the latest and greatest in Red Hat without much
That being said, your YUM repositories aren't set in stone.
These are the places the service goes to when it needs to find new
packages, or compare your existing software to the latest releases.
These files can be edited in a number of ways, and if you haven't
messed with them before, you should likely follow the steps
mentioned below to keep your Red Hat cruising along at maximum
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