| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | ff | 1m | 440 |
| debian | ff | 1m | 279 |
| redhat | ff | 1m | 260 |
| osx | ff | 1m | 253 |
| php | ff | 1m | 250 |
| mojave | ff | 1m | 241 |
| sunos | ff | 1m | 234 |
| minix | ff | 1m | 219 |
| opensolaris | ff | 1m | 197 |
| hpux | ff | 1m | 183 |
| suse | ff | 1m | 181 |
| xfree86 | ff | 1m | 164 |
| opendarwin | ff | 1m | 154 |
| x11r4 | ff | 1m | 152 |
| freebsd | ff | 1m | 151 |
| centos | ff | 1m | 142 |
| posix | ff | 1m | 130 |
| v7 | ff | 1m | 127 |
| osf1 | ff | 1m | 117 |
| plan9 | ff | 1m | 95 |