| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | dup3 | 3 | 176 |
| linux | dup3 | 2 | 153 |
| netbsd | dup3 | 2 | 101 |
| posix | dup3 | 2 | 94 |
| hpux | dup3 | 2 | 91 |
| plan9 | dup3 | 2 | 86 |
| centos | dup3 | 2 | 81 |
| suse | dup3 | 2 | 81 |
| xfree86 | dup3 | 2 | 78 |
| mojave | dup3 | 2 | 70 |
| x11r4 | dup3 | 2 | 69 |
| opendarwin | dup3 | 2 | 69 |
| debian | dup3 | 2 | 68 |
| minix | dup3 | 2 | 63 |
| php | dup3 | 2 | 62 |
| sunos | dup3 | 2 | 59 |
| opensolaris | dup3 | 2 | 52 |
| osf1 | dup3 | 2 | 48 |