| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | ff | 1m | 537 |
| debian | ff | 1m | 327 |
| osx | ff | 1m | 307 |
| mojave | ff | 1m | 304 |
| redhat | ff | 1m | 302 |
| php | ff | 1m | 289 |
| sunos | ff | 1m | 261 |
| minix | ff | 1m | 261 |
| suse | ff | 1m | 241 |
| opensolaris | ff | 1m | 230 |
| hpux | ff | 1m | 221 |
| freebsd | ff | 1m | 199 |
| xfree86 | ff | 1m | 195 |
| x11r4 | ff | 1m | 190 |
| opendarwin | ff | 1m | 185 |
| centos | ff | 1m | 181 |
| posix | ff | 1m | 171 |
| v7 | ff | 1m | 158 |
| osf1 | ff | 1m | 157 |
| plan9 | ff | 1m | 129 |