| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | vr | 4 | 551 |
| linux | vr | 4 | 532 |
| redhat | vr | 4 | 490 |
| debian | vr | 4 | 476 |
| netbsd | vr | 4 | 472 |
| php | vr | 4 | 433 |
| v7 | vr | 4 | 429 |
| minix | vr | 4 | 417 |
| plan9 | vr | 4 | 413 |
| opensolaris | vr | 4 | 406 |
| centos | vr | 4 | 400 |
| xfree86 | vr | 4 | 398 |
| osx | vr | 4 | 389 |
| bsd | vr | 4 | 377 |
| suse | vr | 4 | 364 |
| x11r4 | vr | 4 | 326 |
| posix | vr | 4 | 318 |
| hpux | vr | 4 | 292 |
| osf1 | vr | 4 | 291 |