| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | ep | 4 | 183 |
| netbsd | ep | 4 | 149 |
| freebsd | ep | 4 | 136 |
| bsd | ep | 4 | 131 |
| debian | ep | 4 | 124 |
| redhat | ep | 4 | 119 |
| opensolaris | ep | 4 | 101 |
| centos | ep | 4 | 99 |
| php | ep | 4 | 96 |
| opendarwin | ep | 4 | 93 |
| v7 | ep | 4 | 90 |
| xfree86 | ep | 4 | 89 |
| plan9 | ep | 4 | 86 |
| minix | ep | 4 | 81 |
| suse | ep | 4 | 81 |
| posix | ep | 4 | 77 |
| hpux | ep | 4 | 73 |
| osf1 | ep | 4 | 69 |