| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | dup3 | 3 | 670 |
| linux | dup3 | 2 | 463 |
| posix | dup3 | 2 | 444 |
| centos | dup3 | 2 | 413 |
| suse | dup3 | 2 | 410 |
| plan9 | dup3 | 2 | 364 |
| hpux | dup3 | 2 | 364 |
| mojave | dup3 | 2 | 342 |
| xfree86 | dup3 | 2 | 341 |
| netbsd | dup3 | 2 | 340 |
| debian | dup3 | 2 | 331 |
| x11r4 | dup3 | 2 | 309 |
| php | dup3 | 2 | 304 |
| minix | dup3 | 2 | 304 |
| sunos | dup3 | 2 | 249 |
| opensolaris | dup3 | 2 | 241 |
| osf1 | dup3 | 2 | 222 |
| opendarwin | dup3 | 2 | 210 |