| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | pcreposix | 3 | 120 |
| x11r4 | pcreposix | 3 | 87 |
| v7 | pcreposix | 3 | 83 |
| centos | pcreposix | 3 | 81 |
| opensolaris | pcreposix | 3 | 79 |
| xfree86 | pcreposix | 3 | 75 |
| ultrix | pcreposix | 3 | 73 |
| posix | pcreposix | 3 | 66 |
| mojave | pcreposix | 3 | 64 |
| suse | pcreposix | 3 | 62 |
| php | pcreposix | 3 | 62 |
| debian | pcreposix | 3 | 57 |
| plan9 | pcreposix | 3 | 54 |
| redhat | pcreposix | 3 | 51 |
| hpux | pcreposix | 3 | 47 |