| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 480 |
| minix | nptl | 7 | 402 |
| sunos | nptl | 7 | 398 |
| ultrix | nptl | 7 | 397 |
| opensolaris | nptl | 7 | 394 |
| bsd | nptl | 7 | 390 |
| linux | nptl | 7 | 376 |
| mojave | nptl | 7 | 368 |
| x11r4 | nptl | 7 | 368 |
| v7 | nptl | 7 | 351 |
| plan9 | nptl | 7 | 350 |
| osx | nptl | 7 | 346 |
| php | nptl | 7 | 346 |
| xfree86 | nptl | 7 | 342 |
| opendarwin | nptl | 7 | 323 |
| netbsd | nptl | 7 | 272 |
| freebsd | nptl | 7 | 271 |
| redhat | nptl | 7 | 257 |
| osf1 | nptl | 7 | 212 |