| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | dup3 | 3 | 820 |
| linux | dup3 | 2 | 575 |
| posix | dup3 | 2 | 558 |
| suse | dup3 | 2 | 512 |
| centos | dup3 | 2 | 505 |
| plan9 | dup3 | 2 | 455 |
| netbsd | dup3 | 2 | 445 |
| hpux | dup3 | 2 | 428 |
| xfree86 | dup3 | 2 | 415 |
| mojave | dup3 | 2 | 415 |
| debian | dup3 | 2 | 409 |
| x11r4 | dup3 | 2 | 377 |
| minix | dup3 | 2 | 364 |
| php | dup3 | 2 | 361 |
| sunos | dup3 | 2 | 297 |
| opensolaris | dup3 | 2 | 286 |
| osf1 | dup3 | 2 | 259 |
| opendarwin | dup3 | 2 | 236 |