| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | fdio | 7i | 454 |
| opensolaris | fdio | 7i | 393 |
| sunos | fdio | 7i | 390 |
| posix | fdio | 7i | 354 |
| freebsd | fdio | 7i | 350 |
| minix | fdio | 7i | 339 |
| opendarwin | fdio | 7i | 324 |
| xfree86 | fdio | 7i | 312 |
| bsd | fdio | 7i | 312 |
| v7 | fdio | 7i | 310 |
| php | fdio | 7i | 307 |
| hpux | fdio | 7i | 307 |
| redhat | fdio | 7i | 298 |
| osx | fdio | 7i | 298 |
| x11r4 | fdio | 7i | 294 |
| centos | fdio | 7i | 283 |
| mojave | fdio | 7i | 274 |
| plan9 | fdio | 7i | 269 |
| suse | fdio | 7i | 266 |
| debian | fdio | 7i | 251 |