| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | fd | 4 | 587 |
| minix | fd | 4 | 565 |
| bsd | fd | 4 | 500 |
| linux | fd | 4 | 436 |
| osx | fd | 4 | 419 |
| centos | fd | 4 | 414 |
| mojave | fd | 4 | 413 |
| netbsd | fd | 4 | 380 |
| x11r4 | fd | 1 | 377 |
| redhat | fd | 4 | 371 |
| suse | fd | 4 | 362 |
| debian | fd | 4 | 351 |
| php | fd | 1 | 342 |
| opendarwin | fd | 4 | 339 |
| debian | fd | 1 | 338 |
| opensolaris | fd | 7d | 329 |
| hpux | fd | 1 | 328 |
| osf1 | fd | 4 | 324 |
| posix | fd | 1 | 323 |
| v7 | fd | 1 | 318 |
| osf1 | fd | 7 | 311 |
| xfree86 | fd | 1 | 301 |
| sunos | fd | 7d | 294 |
| plan9 | fd | 1 | 291 |
| sunos | fd | 4 | 227 |
| opensolaris | fd | 4 | 155 |