| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | fdio | 7i | 351 |
| sunos | fdio | 7i | 315 |
| opensolaris | fdio | 7i | 308 |
| freebsd | fdio | 7i | 284 |
| posix | fdio | 7i | 275 |
| minix | fdio | 7i | 256 |
| opendarwin | fdio | 7i | 251 |
| php | fdio | 7i | 247 |
| redhat | fdio | 7i | 240 |
| v7 | fdio | 7i | 236 |
| osx | fdio | 7i | 233 |
| xfree86 | fdio | 7i | 233 |
| x11r4 | fdio | 7i | 231 |
| bsd | fdio | 7i | 231 |
| hpux | fdio | 7i | 229 |
| centos | fdio | 7i | 219 |
| suse | fdio | 7i | 210 |
| mojave | fdio | 7i | 210 |
| plan9 | fdio | 7i | 207 |
| debian | fdio | 7i | 196 |