yum history
$ yum history
$ yum history list <ID>
$ yum history info <ID>
$ yum history undo <ID>
$ yum history redo <ID>yum update
$ yum clean all
$ yum makecache
$ yum updaterpm安裝卸載
$ rpm -ivh *.rpm
$ rpm -qa
$ rpm -qa|grep *
$ rpm -e *
$ rpm -e * --nodepsdone! ^_^