| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 650 |
| ultrix | nptl | 7 | 572 |
| minix | nptl | 7 | 565 |
| sunos | nptl | 7 | 551 |
| opensolaris | nptl | 7 | 544 |
| bsd | nptl | 7 | 534 |
| linux | nptl | 7 | 513 |
| x11r4 | nptl | 7 | 506 |
| v7 | nptl | 7 | 497 |
| mojave | nptl | 7 | 493 |
| opendarwin | nptl | 7 | 486 |
| xfree86 | nptl | 7 | 472 |
| plan9 | nptl | 7 | 457 |
| osx | nptl | 7 | 454 |
| php | nptl | 7 | 447 |
| freebsd | nptl | 7 | 366 |
| redhat | nptl | 7 | 341 |
| netbsd | nptl | 7 | 331 |
| osf1 | nptl | 7 | 294 |