| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | sk | 4 | 1,198 |
| debian | sk | 4 | 691 |
| freebsd | sk | 4 | 669 |
| v7 | sk | 4 | 627 |
| php | sk | 4 | 616 |
| bsd | sk | 4 | 608 |
| redhat | sk | 4 | 606 |
| xfree86 | sk | 4 | 592 |
| osx | sk | 4 | 590 |
| minix | sk | 4 | 589 |
| suse | sk | 4 | 571 |
| posix | sk | 4 | 561 |
| plan9 | sk | 4 | 547 |
| netbsd | sk | 4 | 533 |
| opensolaris | sk | 4 | 531 |
| centos | sk | 4 | 506 |