| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 783 |
| ultrix | nptl | 7 | 694 |
| bsd | nptl | 7 | 677 |
| sunos | nptl | 7 | 666 |
| minix | nptl | 7 | 655 |
| opensolaris | nptl | 7 | 654 |
| linux | nptl | 7 | 638 |
| mojave | nptl | 7 | 615 |
| x11r4 | nptl | 7 | 598 |
| v7 | nptl | 7 | 596 |
| xfree86 | nptl | 7 | 583 |
| opendarwin | nptl | 7 | 577 |
| osx | nptl | 7 | 577 |
| plan9 | nptl | 7 | 556 |
| php | nptl | 7 | 549 |
| freebsd | nptl | 7 | 431 |
| redhat | nptl | 7 | 423 |
| netbsd | nptl | 7 | 407 |
| osf1 | nptl | 7 | 378 |