1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | yum list installedyum install {package name}yum remove {package name}// show repository list$ yum -v repolist // clean repo from repolist$ rpm -qa | grep epelSample outputs:epel-release-5-4$ yum remove epel-release-5-4$ yum clean all |