| OS | Man Page | Section | Hits |
|---|---|---|---|
| posix | nptl | 7 | 230 |
| bsd | nptl | 7 | 208 |
| ultrix | nptl | 7 | 207 |
| linux | nptl | 7 | 196 |
| x11r4 | nptl | 7 | 193 |
| opensolaris | nptl | 7 | 193 |
| php | nptl | 7 | 188 |
| sunos | nptl | 7 | 183 |
| minix | nptl | 7 | 183 |
| mojave | nptl | 7 | 179 |
| osx | nptl | 7 | 178 |
| plan9 | nptl | 7 | 171 |
| xfree86 | nptl | 7 | 169 |
| v7 | nptl | 7 | 166 |
| opendarwin | nptl | 7 | 163 |
| netbsd | nptl | 7 | 150 |
| freebsd | nptl | 7 | 135 |
| redhat | nptl | 7 | 134 |
| osf1 | nptl | 7 | 110 |