RPM (Redhat Package Manager)

1. rpm -qa | grep [package-name] : check whether package already installed
2. rpm -qi [package-name] : find out detailed information of a package
3. rpm -qc [package-name] : find out file configuration of a package
4. rpm -ql [package-name] : find out what directory being installed by a package

YUM (Yellowdog Updater Modified)

1. yum info [package-name] : find out detailed information of a package
2. yum search [package-name] : search for a package
3. yum install [package-name] : install a package
4. yum remove [package-name] : remove a package
5. yum history : find out detailed history of yum command
6. yum deplist [package] : find out detailed depedency of a package