| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | nptl | 7 | 84 |
| bsd | nptl | 7 | 79 |
| x11r4 | nptl | 7 | 76 |
| sunos | nptl | 7 | 71 |
| php | nptl | 7 | 67 |
| ultrix | nptl | 7 | 67 |
| v7 | nptl | 7 | 63 |
| mojave | nptl | 7 | 61 |
| opensolaris | nptl | 7 | 61 |
| xfree86 | nptl | 7 | 60 |
| freebsd | nptl | 7 | 58 |
| netbsd | nptl | 7 | 57 |
| opendarwin | nptl | 7 | 53 |
| minix | nptl | 7 | 52 |
| osx | nptl | 7 | 49 |
| posix | nptl | 7 | 47 |
| plan9 | nptl | 7 | 47 |
| redhat | nptl | 7 | 44 |
| osf1 | nptl | 7 | 36 |