| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 718 |
| ultrix | nptl | 7 | 630 |
| minix | nptl | 7 | 618 |
| bsd | nptl | 7 | 613 |
| sunos | nptl | 7 | 612 |
| opensolaris | nptl | 7 | 596 |
| linux | nptl | 7 | 571 |
| x11r4 | nptl | 7 | 553 |
| mojave | nptl | 7 | 547 |
| v7 | nptl | 7 | 546 |
| opendarwin | nptl | 7 | 530 |
| xfree86 | nptl | 7 | 529 |
| osx | nptl | 7 | 515 |
| php | nptl | 7 | 510 |
| plan9 | nptl | 7 | 504 |
| freebsd | nptl | 7 | 405 |
| redhat | nptl | 7 | 377 |
| netbsd | nptl | 7 | 367 |
| osf1 | nptl | 7 | 332 |