| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | pcreposix | 3 | 335 |
| x11r4 | pcreposix | 3 | 320 |
| opensolaris | pcreposix | 3 | 312 |
| ultrix | pcreposix | 3 | 295 |
| suse | pcreposix | 3 | 283 |
| v7 | pcreposix | 3 | 282 |
| xfree86 | pcreposix | 3 | 281 |
| centos | pcreposix | 3 | 271 |
| mojave | pcreposix | 3 | 267 |
| debian | pcreposix | 3 | 254 |
| php | pcreposix | 3 | 250 |
| posix | pcreposix | 3 | 250 |
| plan9 | pcreposix | 3 | 217 |
| hpux | pcreposix | 3 | 217 |
| redhat | pcreposix | 3 | 212 |