| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | pcreposix | 3 | 81 |
| centos | pcreposix | 3 | 58 |
| opensolaris | pcreposix | 3 | 52 |
| xfree86 | pcreposix | 3 | 49 |
| x11r4 | pcreposix | 3 | 45 |
| v7 | pcreposix | 3 | 41 |
| ultrix | pcreposix | 3 | 40 |
| posix | pcreposix | 3 | 39 |
| debian | pcreposix | 3 | 35 |
| mojave | pcreposix | 3 | 33 |
| suse | pcreposix | 3 | 31 |
| redhat | pcreposix | 3 | 28 |
| php | pcreposix | 3 | 28 |
| plan9 | pcreposix | 3 | 27 |
| hpux | pcreposix | 3 | 24 |