| Function | Syscall |
|---|
| determine accessibility of a file | |
| generate a signal in the future | |
| change working directory | |
| change root | |
| change owner | |
| close a file descriptor | |
| start a program | |
| string encoding function | |
| start a program | |
| duplicate an open file descriptor | |
| | Function | Syscall |
|---|
| duplicate an open file descriptor | |
| duplicate a program | |
| check if tty | |
| processor priority | |
| create an interprocess channel | |
| next char from file descriptor | |
| purge directory | |
| make link to a file | |
| suspend execution for an interval | |
| put a char into the file descriptor | |
|
The Nine Planets 
Digits of Pi 
Multiplication Table
