| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | sk | 4 | 1,047 |
| freebsd | sk | 4 | 548 |
| debian | sk | 4 | 542 |
| v7 | sk | 4 | 478 |
| redhat | sk | 4 | 472 |
| xfree86 | sk | 4 | 458 |
| php | sk | 4 | 454 |
| minix | sk | 4 | 450 |
| osx | sk | 4 | 449 |
| bsd | sk | 4 | 446 |
| suse | sk | 4 | 432 |
| posix | sk | 4 | 432 |
| plan9 | sk | 4 | 421 |
| opensolaris | sk | 4 | 416 |
| netbsd | sk | 4 | 398 |
| centos | sk | 4 | 385 |