| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | dup3 | 3 | 123 |
| linux | dup3 | 2 | 110 |
| netbsd | dup3 | 2 | 67 |
| posix | dup3 | 2 | 49 |
| hpux | dup3 | 2 | 45 |
| suse | dup3 | 2 | 42 |
| centos | dup3 | 2 | 39 |
| plan9 | dup3 | 2 | 38 |
| opendarwin | dup3 | 2 | 36 |
| mojave | dup3 | 2 | 35 |
| debian | dup3 | 2 | 34 |
| php | dup3 | 2 | 32 |
| minix | dup3 | 2 | 32 |
| sunos | dup3 | 2 | 32 |
| xfree86 | dup3 | 2 | 31 |
| x11r4 | dup3 | 2 | 27 |
| opensolaris | dup3 | 2 | 27 |
| osf1 | dup3 | 2 | 20 |