| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | fdio | 7i | 290 |
| freebsd | fdio | 7i | 234 |
| sunos | fdio | 7i | 225 |
| opensolaris | fdio | 7i | 220 |
| posix | fdio | 7i | 208 |
| opendarwin | fdio | 7i | 201 |
| php | fdio | 7i | 194 |
| v7 | fdio | 7i | 194 |
| minix | fdio | 7i | 192 |
| redhat | fdio | 7i | 189 |
| x11r4 | fdio | 7i | 189 |
| hpux | fdio | 7i | 187 |
| xfree86 | fdio | 7i | 187 |
| osx | fdio | 7i | 178 |
| bsd | fdio | 7i | 176 |
| centos | fdio | 7i | 170 |
| plan9 | fdio | 7i | 162 |
| suse | fdio | 7i | 161 |
| mojave | fdio | 7i | 160 |
| debian | fdio | 7i | 154 |