| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | dup3 | 3 | 288 |
| linux | dup3 | 2 | 219 |
| netbsd | dup3 | 2 | 178 |
| posix | dup3 | 2 | 178 |
| suse | dup3 | 2 | 176 |
| centos | dup3 | 2 | 172 |
| hpux | dup3 | 2 | 163 |
| xfree86 | dup3 | 2 | 163 |
| plan9 | dup3 | 2 | 151 |
| mojave | dup3 | 2 | 139 |
| debian | dup3 | 2 | 137 |
| php | dup3 | 2 | 132 |
| minix | dup3 | 2 | 130 |
| x11r4 | dup3 | 2 | 128 |
| sunos | dup3 | 2 | 109 |
| opendarwin | dup3 | 2 | 105 |
| opensolaris | dup3 | 2 | 100 |
| osf1 | dup3 | 2 | 82 |