| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | dup3 | 3 | 499 |
| linux | dup3 | 2 | 323 |
| posix | dup3 | 2 | 301 |
| suse | dup3 | 2 | 294 |
| centos | dup3 | 2 | 283 |
| hpux | dup3 | 2 | 267 |
| xfree86 | dup3 | 2 | 256 |
| plan9 | dup3 | 2 | 253 |
| netbsd | dup3 | 2 | 250 |
| mojave | dup3 | 2 | 238 |
| debian | dup3 | 2 | 230 |
| php | dup3 | 2 | 227 |
| minix | dup3 | 2 | 221 |
| x11r4 | dup3 | 2 | 213 |
| sunos | dup3 | 2 | 185 |
| opensolaris | dup3 | 2 | 164 |
| opendarwin | dup3 | 2 | 157 |
| osf1 | dup3 | 2 | 141 |