| raiseSignal | System.Posix.Signals, System.Posix.Signals.Exts, System.Posix |
| readDirStream | System.Posix.Directory, System.Posix |
| ReadEnable | System.Posix.Terminal, System.Posix |
| ReadLock | System.Posix.IO, System.Posix |
| ReadOnly | System.Posix.IO, System.Posix |
| readSymbolicLink | System.Posix.Files, System.Posix |
| ReadWrite | System.Posix.IO, System.Posix |
| realTimeAlarm | System.Posix.Signals, System.Posix.Signals.Exts, System.Posix |
| regularFileMode | System.Posix.Files, System.Posix |
| release | System.Posix.Unistd, System.Posix |
| removeDirectory | System.Posix.Directory, System.Posix |
| removeLink | System.Posix.Files, System.Posix |
| rename | System.Posix.Files, System.Posix |
| Resource | System.Posix.Resource, System.Posix |
| ResourceCoreFileSize | System.Posix.Resource, System.Posix |
| ResourceCPUTime | System.Posix.Resource, System.Posix |
| ResourceDataSize | System.Posix.Resource, System.Posix |
| ResourceFileSize | System.Posix.Resource, System.Posix |
| ResourceLimit |
| 1 (Type/Class) | System.Posix.Resource, System.Posix |
| 2 (Data Constructor) | System.Posix.Resource, System.Posix |
| ResourceLimitInfinity | System.Posix.Resource, System.Posix |
| ResourceLimits |
| 1 (Type/Class) | System.Posix.Resource, System.Posix |
| 2 (Data Constructor) | System.Posix.Resource, System.Posix |
| ResourceLimitUnknown | System.Posix.Resource, System.Posix |
| ResourceOpenFiles | System.Posix.Resource, System.Posix |
| ResourceStackSize | System.Posix.Resource, System.Posix |
| ResourceTotalMemory | System.Posix.Resource, System.Posix |
| RestartOutput | System.Posix.Terminal, System.Posix |
| rewindDirStream | System.Posix.Directory, System.Posix |
| RTLDFlags | System.Posix.DynamicLinker.Prim, System.Posix.DynamicLinker |
| RTLD_GLOBAL | System.Posix.DynamicLinker.Prim, System.Posix.DynamicLinker |
| RTLD_LAZY | System.Posix.DynamicLinker.Prim, System.Posix.DynamicLinker |
| RTLD_LOCAL | System.Posix.DynamicLinker.Prim, System.Posix.DynamicLinker |
| RTLD_NOW | System.Posix.DynamicLinker.Prim, System.Posix.DynamicLinker |
