| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | fdio | 7i | 498 |
| opensolaris | fdio | 7i | 427 |
| sunos | fdio | 7i | 422 |
| posix | fdio | 7i | 395 |
| freebsd | fdio | 7i | 381 |
| minix | fdio | 7i | 378 |
| opendarwin | fdio | 7i | 359 |
| xfree86 | fdio | 7i | 349 |
| bsd | fdio | 7i | 349 |
| v7 | fdio | 7i | 346 |
| php | fdio | 7i | 339 |
| hpux | fdio | 7i | 337 |
| osx | fdio | 7i | 337 |
| redhat | fdio | 7i | 334 |
| x11r4 | fdio | 7i | 332 |
| centos | fdio | 7i | 324 |
| suse | fdio | 7i | 306 |
| plan9 | fdio | 7i | 303 |
| mojave | fdio | 7i | 303 |
| debian | fdio | 7i | 279 |