| OS | Man Page | Section | Hits |
|---|---|---|---|
| bsd | ep | 4 | 674 |
| netbsd | ep | 4 | 635 |
| linux | ep | 4 | 596 |
| freebsd | ep | 4 | 573 |
| redhat | ep | 4 | 565 |
| xfree86 | ep | 4 | 492 |
| v7 | ep | 4 | 484 |
| debian | ep | 4 | 481 |
| opensolaris | ep | 4 | 479 |
| centos | ep | 4 | 477 |
| minix | ep | 4 | 474 |
| hpux | ep | 4 | 472 |
| opendarwin | ep | 4 | 468 |
| plan9 | ep | 4 | 468 |
| php | ep | 4 | 462 |
| suse | ep | 4 | 451 |
| osf1 | ep | 4 | 356 |
| posix | ep | 4 | 342 |