/usr/bin/grpmorphan
/usr/bin/rpmdep
/usr/bin/rpmdep.pl
/usr/bin/rpmduplicates
/usr/bin/rpmduplicates.pl
/usr/bin/rpmextra
/usr/bin/rpmextra.pl
/usr/bin/rpmorphan
/usr/bin/rpmorphan.pl
/usr/bin/rpmusage
/usr/bin/rpmusage.pl
You may install this package on CentOS with
yum
install rpmorphan