| Fd | System.Posix |
| fdRead | System.Posix System.Posix.IO |
| fdSeek | System.Posix System.Posix.IO |
| fdToHandle | System.Posix System.Posix.IO |
| fdWrite | System.Posix System.Posix.IO |
| fileAccess | System.Posix System.Posix.Files |
| fileExist | System.Posix System.Posix.Files |
| fileGroup | System.Posix System.Posix.Files |
| fileID | System.Posix System.Posix.Files |
| fileMode | System.Posix System.Posix.Files |
| fileOwner | System.Posix System.Posix.Files |
| fileSize | System.Posix System.Posix.Files |
| fileSizeLimitExceeded | System.Posix |
| floatingPointException | System.Posix |
| forkProcess | System.Posix System.Posix.Process |
| forkProcessAll | System.Posix System.Posix.Process |
| fullSignalSet | System.Posix |
