| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 278 |
| bsd | nptl | 7 | 254 |
| ultrix | nptl | 7 | 248 |
| opensolaris | nptl | 7 | 242 |
| x11r4 | nptl | 7 | 237 |
| sunos | nptl | 7 | 229 |
| linux | nptl | 7 | 229 |
| minix | nptl | 7 | 226 |
| php | nptl | 7 | 219 |
| mojave | nptl | 7 | 214 |
| osx | nptl | 7 | 212 |
| plan9 | nptl | 7 | 206 |
| xfree86 | nptl | 7 | 200 |
| v7 | nptl | 7 | 198 |
| opendarwin | nptl | 7 | 197 |
| netbsd | nptl | 7 | 180 |
| freebsd | nptl | 7 | 167 |
| redhat | nptl | 7 | 161 |
| osf1 | nptl | 7 | 135 |