| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | vr | 4 | 737 |
| netbsd | vr | 4 | 678 |
| linux | vr | 4 | 671 |
| redhat | vr | 4 | 669 |
| debian | vr | 4 | 630 |
| php | vr | 4 | 591 |
| v7 | vr | 4 | 580 |
| plan9 | vr | 4 | 576 |
| minix | vr | 4 | 562 |
| opensolaris | vr | 4 | 550 |
| osx | vr | 4 | 545 |
| bsd | vr | 4 | 544 |
| xfree86 | vr | 4 | 540 |
| centos | vr | 4 | 525 |
| suse | vr | 4 | 515 |
| x11r4 | vr | 4 | 443 |
| hpux | vr | 4 | 419 |
| posix | vr | 4 | 414 |
| osf1 | vr | 4 | 392 |