[CentOS] yum in test mode and downgrade of a package

Tue May 17 17:03:58 UTC 2011
Bernard Fay <bernard.fay at enodegroup.com>

Is it possible to run yum in test mode?    Something similar to rpm --test

Also, is it possible to downgrade a package?  Say we install a package and
we find this new version creates problem for an application running on the
server and we need to go back to a previous version.


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