| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | pcresyntax | 3 | 512 |
| debian | pcresyntax | 3 | 331 |
| centos | pcresyntax | 3 | 311 |
| ultrix | pcresyntax | 3 | 300 |
| x11r4 | pcresyntax | 3 | 284 |
| php | pcresyntax | 3 | 279 |
| posix | pcresyntax | 3 | 263 |
| xfree86 | pcresyntax | 3 | 258 |
| plan9 | pcresyntax | 3 | 258 |
| v7 | pcresyntax | 3 | 251 |
| osx | pcresyntax | 3 | 246 |
| mojave | pcresyntax | 3 | 232 |
| suse | pcresyntax | 3 | 225 |
| hpux | pcresyntax | 3 | 213 |