| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | fd | 4 | 262 |
| minix | fd | 4 | 261 |
| bsd | fd | 4 | 247 |
| linux | fd | 4 | 227 |
| osx | fd | 4 | 209 |
| x11r4 | fd | 1 | 206 |
| redhat | fd | 4 | 193 |
| debian | fd | 4 | 191 |
| debian | fd | 1 | 187 |
| centos | fd | 4 | 184 |
| suse | fd | 4 | 184 |
| mojave | fd | 4 | 178 |
| osf1 | fd | 4 | 164 |
| hpux | fd | 1 | 160 |
| opensolaris | fd | 7d | 158 |
| netbsd | fd | 4 | 157 |
| v7 | fd | 1 | 152 |
| opendarwin | fd | 4 | 150 |
| osf1 | fd | 7 | 147 |
| php | fd | 1 | 146 |
| posix | fd | 1 | 144 |
| plan9 | fd | 1 | 143 |
| sunos | fd | 7d | 134 |
| xfree86 | fd | 1 | 133 |
| sunos | fd | 4 | 103 |
| opensolaris | fd | 4 | 76 |