William L. Maltby wrote:
In CentOS-Base.repo, for [base] and [update] add lines similar to this
excludepkgs = firefox
its just exclude= not excludepkgs ( check man yum.conf )
and in [centosplus] add a line like this
includepkgs = firefox
i believe the includepkgs got named such since the 'include' keyword includes a segment of config file from elsewhere.