rpm -i [packagename]       - installs a package. 

rpm -e [programname]       - erases it.

rpm -U [packagename]       - upgrades an existing program with a newer
                             package.

rpm -q [programname]       - queries for packagename and version of an
                             installed program.

rpm -qp [packagename]      - does the same on a package not installed.

rpm -qpi [packagename]     - tells you what the package is about, who
                             packaged it asf.

rpm --verify [programname] - will tell you if all files of the packages
                             are stil (or at all) installed.

rpm -qpli > ~/mancdrpm.txt - exports rpm data to mancdrpm.txt.

rpm -qa | grep man         - provides you with a list of all installed
                             packages that have the pattern 'man' in their
                             name.