| Ra2750 - (version 6) |
| RaceCondition - (version 8) |
| RAD - (version 5) |
| RadeonNotes - (version 19) |
| RadeonOnNforce - (version 13) |
| RadioHauraki - (version 6) |
| RadioTuner - (version 12) |
| RADIUS - (version 15) |
| RadMoore - (version 4) |
| RAID - (version 14) |
| RaidNotes - (version 5) |
| RaidOnLinux - (version 8) |
| raise(3) - (version 1) |
| RaLink - (version 1) |
| RAM - (version 4) |
| ram(4) - (version 1) |
| RamDisk - (version 1) |
| ramsize(8) - (version 1) |
| rand(3) - (version 1) |
| RandalSchwartz - (version 2) |
| random(3) - (version 4) |
| random(4) - (version 2) |
| RandomNumberGenerator - (version 15) |
| RandomPage - (version 1) |
| ranlib(1) - (version 1) |
| rarp(8) - (version 1) |
| rasttopnm(1) - (version 1) |
| RateLimiting - (version 1) |
| RateMyPXT - (version 15) |
| RavingMadSocialist - (version 2) |
| raw(7) - (version 1) |
| raw(8) - (version 1) |
| RaWrite - (version 1) |
| rawtopgm(1) - (version 1) |
| rawtoppm(1) - (version 1) |
| RaymondBurgess - (version 9) |
| rb(1) - (version 1) |
| rbash(1) - (version 3) |
| RBL - (version 2) |
| rc.boot(5) - (version 4) |
| rclock(1) - (version 1) |
| rcmd(3) - (version 1) |
| rcp(1) - (version 1) |
| RCS - (version 2) |
| rcs(1) - (version 1) |
| rcs2log(1) - (version 2) |
| rcS(5) - (version 1) |
| rcsclean(1) - (version 1) |
| rcsdiff(1) - (version 1) |
| rcsfile(5) - (version 1) |
| rcsfreeze(1) - (version 1) |
| rcsintro(1) - (version 1) |
| rcsmerge(1) - (version 2) |
| RDBMS - (version 4) |
| rd-bomb(1) - (version 4) |
| rdev(8) - (version 2) |
| RDF - (version 6) |
| rdjpgcom(1) - (version 1) |
| read(2) - (version 2) |
| ReadAhead - (version 1) |
| readdir(2) - (version 2) |
| readdir(3) - (version 1) |
| readelf(1) - (version 1) |
| read-expenses(1) - (version 1) |
| read-ical(1) - (version 2) |
| readline(3) - (version 4) |
| readlink(1) - (version 1) |
| readlink(2) - (version 2) |
| readprofile(1) - (version 1) |
| read-todos(1) - (version 1) |
| readv(2) - (version 2) |
| readv(3) - (version 1) |
| RealID - (version 1) |
| realloc(3) - (version 1) |
| RealName - (version 3) |
| realpath(3) - (version 1) |
| RealPlayer - (version 9) |
| RealSoonNow - (version 1) |
| RealTime - (version 1) |
| RealWorld - (version 6) |
| RealWorldWebCompliance - (version 15) |
| reboot(2) - (version 2) |
| reboot(8) - (version 1) |
| rec(1) - (version 1) |
| RecentChanges - (version 8) |
| RecentEdits - (version 4) |
| RecentVisitors - (version 107) |
| recno(3) - (version 1) |
| re_comp(3) - (version 1) |
| RecursiveAcronym - (version 11) |
| RecursiveDescentParser - (version 2) |
| recv(2) - (version 3) |
| recvfrom(2) - (version 2) |
| recvmsg(2) - (version 2) |
| red(1) - (version 1) |
| RedBlackTree - (version 2) |
| RedBull - (version 3) |
| RedDwarf - (version 3) |
| RedHat - (version 10) |
| RedHatCertifiedEngineer - (version 1) |
| RedHatEnterpriseLinux - (version 7) |
| RedHatLinux - (version 11) |
| RedHatLinuxProject - (version 2) |
| RedHatMetaNetScripts - (version 7) |
| RedHatNotes - (version 16) |
| RedHatRebuilds - (version 4) |
| RedHatToDebianNotes - (version 7) |
| RedirectToPlugin - (version 2) |
| ReedLoden - (version 9) |
| ReelTwo - (version 1) |
| re_exec(3) - (version 1) |
| Refactoring - (version 2) |
| refer(1) - (version 1) |
| ReferenceImplementation - (version 2) |
| regcomp(3) - (version 1) |
| regerror(3) - (version 1) |
| regex(3) - (version 1) |
| regex(7) - (version 1) |
| regexec(3) - (version 1) |
| regfree(3) - (version 1) |
| registerrpc(3) - (version 1) |
| RegressionTesting - (version 1) |
| RegularExpression - (version 11) |
| ReiniUrban - (version 3) |
| ReiserFS - (version 5) |
| RelationalDataBase - (version 3) |
| ReleaseNotes - (version 4) |
| Reliability - (version 1) |
| ReligiousWar - (version 33) |
| reLyX(1) - (version 2) |
| reminders(1) - (version 1) |
| RemoteProcedureCall - (version 1) |
| remove(3) - (version 1) |
| remque(3) - (version 1) |
| remsync(1) - (version 1) |
| rename(1) - (version 1) |
| rename(2) - (version 2) |
| ReneBartosh - (version 27) |
| renice(1) - (version 1) |
| rep(1) - (version 1) |
| replay(1) - (version 1) |
| Replication - (version 1) |
| ReplyToMunging - (version 7) |
| rep-remote(1) - (version 1) |
| RequestedNote - (version 2) |
| request_init(3) - (version 1) |
| request_set(3) - (version 1) |
| RequireSignOrSeal - (version 5) |
| reset(1) - (version 1) |
| res_init(3) - (version 2) |
| resize2fs(8) - (version 3) |
| resizecons(8) - (version 1) |
| res_mkquery(3) - (version 2) |
| resolv+(8) - (version 1) |
| resolv.conf(5) - (version 2) |
| resolver(3) - (version 2) |
| resolver(5) - (version 1) |
| ResourceRecord - (version 14) |
| res_query(3) - (version 2) |
| res_querydomain(3) - (version 2) |
| res_search(3) - (version 2) |
| res_send(3) - (version 2) |
| rev(1) - (version 1) |
| ReverseLookup - (version 4) |
| ReversePathFiltering - (version 9) |
| ReversePolish - (version 8) |
| Reviews - (version 14) |
| rewind(3) - (version 1) |
| rewinddir(3) - (version 1) |
| RewriteRules - (version 13) |
| RFC - (version 7) |
| RFElectronics - (version 3) |
| RGB - (version 1) |
| rgb3toppm(1) - (version 1) |
| rgrep(1) - (version 1) |
| rgview(1) - (version 2) |
| rgvim(1) - (version 2) |
| RHCE - (version 2) |
| RHEL - (version 1) |
| RhythmBox - (version 3) |
| RichardBarrington - (version 4) |
| RichardStallman - (version 6) |
| RichGroves - (version 6) |
| RightClick - (version 1) |
| RimuHosting - (version 8) |
| rindex(3) - (version 1) |
| rint(3) - (version 1) |
| rintf(3) - (version 1) |
| rintl(3) - (version 1) |
| RIP - (version 6) |
| RIPE - (version 2) |
| RipeWhoisNotes - (version 2) |
| RISC - (version 5) |
| rjoe(1) - (version 2) |
| rletopnm(1) - (version 4) |
| RLL - (version 1) |
| rlog(1) - (version 1) |
| rlogin(1) - (version 2) |
| rm(1) - (version 3) |
| rmail(8) - (version 1) |
| rmdir(1) - (version 2) |
| rmdir(2) - (version 3) |
| rmmod(8) - (version 2) |
| RMS - (version 6) |
| rmt(8) - (version 2) |
| RoadWarrior - (version 1) |
| RoastMeat - (version 1) |
| RobBakker - (version 1) |
| RobertMacKay - (version 4) |
| RobLevin - (version 4) |
| RobMcDonald - (version 2) |
| RobotCA - (version 24) |
| RockClimber - (version 1) |
| rocks(1) - (version 4) |
| RodAldridge - (version 9) |
| RodneyHide - (version 2) |
| roff(7) - (version 4) |
| ROFL - (version 4) |
| Rogue - (version 4) |
| RolfSchumacher - (version 2) |
| ROM - (version 2) |
| root - (version 2) |
| rootflags(8) - (version 1) |
| RootKit - (version 4) |
| RootNameServer - (version 5) |
| rorschach(1) - (version 4) |
| RosettaStone - (version 2) |
| rotatelogs(8) - (version 2) |
| ROTFLMAO - (version 3) |
| rotzoomer(1) - (version 5) |
| round(3) - (version 1) |
| roundf(3) - (version 1) |
| roundl(3) - (version 1) |
| RoundRobin - (version 3) |
| route(4) - (version 1) |
| route(8) - (version 1) |
| RouteAggregation - (version 2) |
| routef(8) - (version 1) |
| routel(8) - (version 1) |
| RouterAdvertisements - (version 3) |
| RoutingNotes - (version 3) |
| RoutingProtocols - (version 1) |
| RPC - (version 2) |
| rpc(3) - (version 1) |
| rpc(5) - (version 1) |
| rpcclient(1) - (version 2) |
| rpcgen(1) - (version 1) |
| rpcinfo(8) - (version 1) |
| rpc.lockd(8) - (version 2) |
| rpc.mountd(8) - (version 1) |
| rpc.nfsd(8) - (version 1) |
| rpc.statd(8) - (version 4) |
| RPDB - (version 1) |
| RPG - (version 7) |
| RPL - (version 2) |
| RPM - (version 16) |
| rpm2cpio(8) - (version 1) |
| rpm(8) - (version 3) |
| rpmbuild(8) - (version 3) |
| rpmdb(8) - (version 3) |
| rpme(8) - (version 3) |
| rpmi(8) - (version 3) |
| RPMNotes - (version 4) |
| rpmquery(8) - (version 3) |
| rpmsign(8) - (version 3) |
| rpmu(8) - (version 3) |
| rpmverify(8) - (version 3) |
| RPN - (version 2) |
| RR - (version 7) |
| RRD - (version 2) |
| rrdtool - (version 3) |
| rresvport(3) - (version 1) |
| RS232 - (version 5) |
| RSA - (version 1) |
| rsh(1) - (version 2) |
| RSI - (version 5) |
| rsmtp(8) - (version 1) |
| RSS - (version 10) |
| RST - (version 1) |
| rsync(1) - (version 1) |
| rsyncd.conf(5) - (version 1) |
| RT2x00WirelessChipset - (version 8) |
| RTA1320 - (version 2) |
| RTA1335 - (version 1) |
| RTA220 - (version 3) |
| rtacct(8) - (version 1) |
| RTF - (version 3) |
| RTFM - (version 8) |
| rtfm(1) - (version 1) |
| rtfm(7) - (version 6) |
| RTFS - (version 5) |
| rtmon(8) - (version 1) |
| rtnetlink(3) - (version 1) |
| rtnetlink(7) - (version 1) |
| RTP - (version 1) |
| RTS - (version 4) |
| RTSP - (version 1) |
| RTT - (version 1) |
| rubibtex(1) - (version 1) |
| Ruby - (version 3) |
| RubyOnRails - (version 2) |
| RuleCard - (version 1) |
| rumakeindex(1) - (version 1) |
| runlevel(8) - (version 1) |
| RunlevelNotes - (version 10) |
| run-mailcap(1) - (version 4) |
| run-parts(8) - (version 1) |
| runq(8) - (version 1) |
| RunTime - (version 1) |
| run-with-aspell(1) - (version 4) |
| RuralLink - (version 2) |
| ruserok(3) - (version 1) |
| rview(1) - (version 2) |
| rvim(1) - (version 2) |
| rx(1) - (version 1) |
| rxvt(1) - (version 2) |
| rxvt-xpm(1) - (version 2) |
| rxvt-xterm(1) - (version 2) |
| rz(1) - (version 1) |