| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | dup3 | 3 | 610 |
| posix | dup3 | 2 | 395 |
| linux | dup3 | 2 | 389 |
| suse | dup3 | 2 | 370 |
| centos | dup3 | 2 | 350 |
| hpux | dup3 | 2 | 327 |
| plan9 | dup3 | 2 | 316 |
| netbsd | dup3 | 2 | 308 |
| xfree86 | dup3 | 2 | 306 |
| mojave | dup3 | 2 | 300 |
| debian | dup3 | 2 | 283 |
| php | dup3 | 2 | 271 |
| minix | dup3 | 2 | 267 |
| x11r4 | dup3 | 2 | 266 |
| sunos | dup3 | 2 | 227 |
| opensolaris | dup3 | 2 | 214 |
| opendarwin | dup3 | 2 | 182 |
| osf1 | dup3 | 2 | 181 |