| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 369 |
| ultrix | nptl | 7 | 304 |
| bsd | nptl | 7 | 296 |
| minix | nptl | 7 | 294 |
| x11r4 | nptl | 7 | 293 |
| opensolaris | nptl | 7 | 292 |
| linux | nptl | 7 | 284 |
| sunos | nptl | 7 | 283 |
| osx | nptl | 7 | 271 |
| php | nptl | 7 | 268 |
| mojave | nptl | 7 | 265 |
| plan9 | nptl | 7 | 260 |
| v7 | nptl | 7 | 260 |
| xfree86 | nptl | 7 | 254 |
| opendarwin | nptl | 7 | 249 |
| netbsd | nptl | 7 | 221 |
| freebsd | nptl | 7 | 209 |
| redhat | nptl | 7 | 192 |
| osf1 | nptl | 7 | 163 |