| OS | Man Page | Section | Hits |
|---|---|---|---|
| bsd | fd | 4 | 108 |
| debian | fd | 1 | 92 |
| freebsd | fd | 4 | 85 |
| linux | fd | 4 | 81 |
| minix | fd | 4 | 77 |
| osx | fd | 4 | 68 |
| opensolaris | fd | 7d | 66 |
| debian | fd | 4 | 66 |
| x11r4 | fd | 1 | 65 |
| redhat | fd | 4 | 62 |
| centos | fd | 4 | 58 |
| mojave | fd | 4 | 55 |
| osf1 | fd | 4 | 53 |
| netbsd | fd | 4 | 52 |
| osf1 | fd | 7 | 52 |
| sunos | fd | 4 | 50 |
| sunos | fd | 7d | 47 |
| suse | fd | 4 | 46 |
| opendarwin | fd | 4 | 45 |
| hpux | fd | 1 | 35 |
| posix | fd | 1 | 33 |
| xfree86 | fd | 1 | 30 |
| v7 | fd | 1 | 30 |
| php | fd | 1 | 27 |
| opensolaris | fd | 4 | 26 |
| plan9 | fd | 1 | 22 |