| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | ff | 1m | 1,229 |
| debian | ff | 1m | 740 |
| osx | ff | 1m | 694 |
| mojave | ff | 1m | 690 |
| redhat | ff | 1m | 657 |
| minix | ff | 1m | 643 |
| php | ff | 1m | 631 |
| suse | ff | 1m | 630 |
| hpux | ff | 1m | 573 |
| freebsd | ff | 1m | 572 |
| sunos | ff | 1m | 531 |
| opendarwin | ff | 1m | 521 |
| xfree86 | ff | 1m | 520 |
| centos | ff | 1m | 498 |
| v7 | ff | 1m | 491 |
| x11r4 | ff | 1m | 485 |
| posix | ff | 1m | 459 |
| opensolaris | ff | 1m | 458 |
| osf1 | ff | 1m | 433 |
| plan9 | ff | 1m | 375 |