| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 592 |
| ultrix | nptl | 7 | 495 |
| sunos | nptl | 7 | 490 |
| opensolaris | nptl | 7 | 483 |
| minix | nptl | 7 | 480 |
| bsd | nptl | 7 | 472 |
| x11r4 | nptl | 7 | 455 |
| linux | nptl | 7 | 446 |
| mojave | nptl | 7 | 442 |
| v7 | nptl | 7 | 434 |
| xfree86 | nptl | 7 | 433 |
| plan9 | nptl | 7 | 410 |
| opendarwin | nptl | 7 | 410 |
| osx | nptl | 7 | 405 |
| php | nptl | 7 | 394 |
| freebsd | nptl | 7 | 325 |
| redhat | nptl | 7 | 305 |
| netbsd | nptl | 7 | 302 |
| osf1 | nptl | 7 | 259 |