| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | ff | 1m | 1,021 |
| debian | ff | 1m | 613 |
| osx | ff | 1m | 576 |
| mojave | ff | 1m | 564 |
| redhat | ff | 1m | 553 |
| php | ff | 1m | 519 |
| minix | ff | 1m | 513 |
| suse | ff | 1m | 508 |
| hpux | ff | 1m | 464 |
| freebsd | ff | 1m | 460 |
| sunos | ff | 1m | 451 |
| xfree86 | ff | 1m | 422 |
| opendarwin | ff | 1m | 415 |
| x11r4 | ff | 1m | 406 |
| centos | ff | 1m | 404 |
| opensolaris | ff | 1m | 397 |
| v7 | ff | 1m | 392 |
| posix | ff | 1m | 391 |
| osf1 | ff | 1m | 369 |
| plan9 | ff | 1m | 309 |