| OS | Man Page | Section | Hits |
|---|---|---|---|
| v7 | y1 | 3 | 183 |
| centos | y1 | 3 | 145 |
| php | y1 | 3 | 136 |
| debian | y1 | 3 | 133 |
| linux | y1 | 3 | 124 |
| redhat | y1 | 3 | 124 |
| posix | y1 | 3 | 124 |
| opendarwin | y1 | 3 | 121 |
| xfree86 | y1 | 3 | 116 |
| suse | y1 | 3p | 108 |
| suse | y1 | 3 | 107 |
| plan9 | y1 | 3 | 105 |
| mojave | y1 | 3 | 102 |
| sunos | y1 | 3m | 98 |
| osx | y1 | 3 | 97 |
| centos | y1 | 3p | 94 |
| freebsd | y1 | 3 | 94 |
| opensolaris | y1 | 3m | 88 |
| hpux | y1 | 3m | 87 |
| netbsd | y1 | 3 | 87 |
| osf1 | y1 | 3 | 86 |
| ultrix | y1 | 3m | 72 |