| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | pcreposix | 3 | 279 |
| x11r4 | pcreposix | 3 | 271 |
| ultrix | pcreposix | 3 | 249 |
| opensolaris | pcreposix | 3 | 248 |
| xfree86 | pcreposix | 3 | 241 |
| suse | pcreposix | 3 | 240 |
| centos | pcreposix | 3 | 231 |
| mojave | pcreposix | 3 | 228 |
| v7 | pcreposix | 3 | 221 |
| posix | pcreposix | 3 | 212 |
| debian | pcreposix | 3 | 201 |
| php | pcreposix | 3 | 194 |
| redhat | pcreposix | 3 | 172 |
| plan9 | pcreposix | 3 | 172 |
| hpux | pcreposix | 3 | 169 |