| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | pcreposix | 3 | 394 |
| opensolaris | pcreposix | 3 | 361 |
| x11r4 | pcreposix | 3 | 360 |
| ultrix | pcreposix | 3 | 335 |
| suse | pcreposix | 3 | 324 |
| xfree86 | pcreposix | 3 | 318 |
| v7 | pcreposix | 3 | 317 |
| mojave | pcreposix | 3 | 307 |
| centos | pcreposix | 3 | 296 |
| php | pcreposix | 3 | 291 |
| debian | pcreposix | 3 | 287 |
| posix | pcreposix | 3 | 280 |
| hpux | pcreposix | 3 | 260 |
| plan9 | pcreposix | 3 | 254 |
| redhat | pcreposix | 3 | 243 |