| Ignore | System.Posix |
| IgnoreBreak | System.Posix System.Posix.Terminal |
| IgnoreCR | System.Posix System.Posix.Terminal |
| IgnoreParityErrors | System.Posix System.Posix.Terminal |
| Immediately | System.Posix System.Posix.Terminal |
| InputQueue | System.Posix System.Posix.Terminal |
| Interrupt | System.Posix System.Posix.Terminal |
| InterruptOnBreak | System.Posix System.Posix.Terminal |
| illegalInstruction | System.Posix |
| inSignalSet | System.Posix |
| inputSpeed | System.Posix System.Posix.Terminal |
| inputTime | System.Posix System.Posix.Terminal |
| installHandler | System.Posix |
| internalAbort | System.Posix |
| intersectFileModes | System.Posix System.Posix.Files |
| isBlockDevice | System.Posix System.Posix.Files |
| isCharacterDevice | System.Posix System.Posix.Files |
| isDirectory | System.Posix System.Posix.Files |
| isNamedPipe | System.Posix System.Posix.Files |
| isRegularFile | System.Posix System.Posix.Files |
| isSocket | System.Posix System.Posix.Files |
| isSymbolicLink | System.Posix System.Posix.Files |
