| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | sf | 4 | 105 |
| freebsd | sf | 4 | 101 |
| debian | sf | 4 | 81 |
| netbsd | sf | 4 | 80 |
| php | sf | 4 | 69 |
| redhat | sf | 4 | 69 |
| centos | sf | 4 | 61 |
| opensolaris | sf | 7d | 57 |
| sunos | sf | 7d | 55 |
| plan9 | sf | 4 | 54 |
| minix | sf | 4 | 53 |
| v7 | sf | 4 | 51 |
| osx | sf | 4 | 49 |
| suse | sf | 4 | 48 |
| x11r4 | sf | 4 | 48 |
| posix | sf | 4 | 46 |
| xfree86 | sf | 4 | 40 |
| bsd | sf | 4 | 38 |
| osf1 | sf | 4 | 38 |
| mojave | sf | 4 | 36 |
| hpux | sf | 4 | 30 |