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The purpose of this Perl script is to help you in doing a
hand upgrade from one version of a Redhat distribution (4.x
or above) to a newer one.
It requires the list of packages
available in the distribution you are planing to upgrade to,
and it will use, if you have it, the list of packages that
were available for the current distribution you are running.
From there, it will tell you which packages have new version
and release numbers, which packages are exactly the same,
and which packages are new (if you provided the list of old
packages). It will also take into account the "contrib" RPMs
installed on your system, and warn you of any possible clash
with packages in the release you plan to upgrade to. Some of
the reasons for using this program include: wanting to
upgrade only some packages, possibly without rebooting your
system, having a list of what you can upgrade, and
hand-picking the new packages you want to retrieve via ftp
and upgrade, or just having an idea of what was upgraded in
the new release.
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