| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | pcreapi | 3 | 466 |
| opensolaris | pcreapi | 3 | 406 |
| x11r4 | pcreapi | 3 | 389 |
| debian | pcreapi | 3 | 354 |
| centos | pcreapi | 3 | 326 |
| posix | pcreapi | 3 | 323 |
| suse | pcreapi | 3 | 311 |
| ultrix | pcreapi | 3 | 308 |
| osx | pcreapi | 3 | 308 |
| xfree86 | pcreapi | 3 | 295 |
| php | pcreapi | 3 | 288 |
| mojave | pcreapi | 3 | 283 |
| v7 | pcreapi | 3 | 273 |
| hpux | pcreapi | 3 | 259 |
| plan9 | pcreapi | 3 | 253 |