rpm fail

gistfile1.txt

:~ # rpm --help | grep -- --whatrequires
  --whatrequires                   query/verify the package(s) which require a
  --whatrequires                   query/verify the package(s) which require a
:~ # rpm --whatrequires libpq5
RPM version 4.4.2.3
Copyright (C) 1998-2002 - Red Hat, Inc.
This program may be freely redistributed under the terms of the GNU GPL

Usage: rpm [-aKfgpWHqV] [-aKfgpWHqVcdilPs] [-aKfgpWHqVcdilPsaKfgpWHqV] [-aKfgpWHqVcdilPsaKfgpWHqV] [-aKfgpWHqVcdilPsaKfgpWHqV] [-aKfgpWHqVcdilPsaKfgpWHqVK] [-aKfgpWHqVcdilPsaKfgpWHqVK] [-aKfgpWHqVcdilPsaKfgpWHqVKi] [-aKfgpWHqVcdilPsaKfgpWHqVKiv] [-aKfgpWHqVcdilPsaKfgpWHqVKiv] [-aKfgpWHqVcdilPsaKfgpWHqVKiv?] [-a|--all] [-f|--file] [-g|--group]
        [-p|--package] [-W|--ftswalk] [--pkgid] [--hdrid] [--fileid]
        [--specfile] [--triggeredby] [--whatrequires] [--whatprovides]
        [--nomanifest] [-c|--configfiles] [-d|--docfiles] [--dump] [-l|--list]
        [-P|--patches] [--queryformat=QUERYFORMAT] [-s|--state] [--nomd5]
        [--nofiles] [--nodeps] [--noscript] [--comfollow] [--logical]
        [--nochdir] [--nostat] [--physical] [--seedot] [--xdev]
        [--whiteout] [--addsign] [-K|--checksig] [--delsign] [--import]
        [--resign] [--nodigest] [--nosignature] [--initdb] [--rebuilddb]
        [--aid] [--allfiles] [--allmatches] [--badreloc]
        [-e|--erase <package>+] [--excludedocs] [--excludepath=<path>]
        [--fileconflicts] [--force] [-F|--freshen <packagefile>+] [-h|--hash]
        [--ignorearch] [--ignoreos] [--ignoresize] [-i|--install] [--justdb]
        [--nodeps] [--nomd5] [--nocontexts] [--noorder] [--nosuggest]
        [--noscripts] [--notriggers] [--oldpackage] [--percent]
        [--prefix=<dir>] [--relocate=<old>=<new>] [--repackage]
        [--replacefiles] [--replacepkgs] [--test]
        [-U|--upgrade <packagefile>+] [--quiet] [-D|--define 'MACRO EXPR']
        [-E|--eval 'EXPR'] [--macros=<FILE:...>] [--nodigest] [--nosignature]
        [--rcfile=<FILE:...>] [-r|--root ROOT] [--querytags] [--showrc]
        [--quiet] [-v|--verbose] [--version] [-?|--help] [--usage]
        [--scripts] [--setperms] [--setugids] [--conflicts] [--obsoletes]
        [--provides] [--requires] [--suggests] [--recommends] [--enhances]
        [--supplements] [--basedon] [--info] [--changelog] [--xml]
        [--triggers] [--last] [--dupes] [--filesbypkg] [--fileclass]
        [--filecolor] [--filecontext] [--fscontext] [--recontext]
        [--fileprovide] [--filerequire] [--buildpolicy=<policy>]
        [--with=<option>] [--without=<option>]
:~ #