| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | fdio | 7i | 251 |
| freebsd | fdio | 7i | 202 |
| opensolaris | fdio | 7i | 190 |
| sunos | fdio | 7i | 182 |
| posix | fdio | 7i | 173 |
| opendarwin | fdio | 7i | 166 |
| php | fdio | 7i | 161 |
| minix | fdio | 7i | 159 |
| redhat | fdio | 7i | 155 |
| v7 | fdio | 7i | 151 |
| xfree86 | fdio | 7i | 150 |
| bsd | fdio | 7i | 150 |
| hpux | fdio | 7i | 148 |
| x11r4 | fdio | 7i | 148 |
| osx | fdio | 7i | 147 |
| plan9 | fdio | 7i | 130 |
| mojave | fdio | 7i | 129 |
| suse | fdio | 7i | 126 |
| centos | fdio | 7i | 125 |
| debian | fdio | 7i | 125 |