| OS | Man Page | Section | Hits |
|---|---|---|---|
| bsd | nptl | 7 | 134 |
| linux | nptl | 7 | 127 |
| ultrix | nptl | 7 | 124 |
| x11r4 | nptl | 7 | 123 |
| sunos | nptl | 7 | 121 |
| php | nptl | 7 | 115 |
| opensolaris | nptl | 7 | 113 |
| posix | nptl | 7 | 112 |
| mojave | nptl | 7 | 110 |
| netbsd | nptl | 7 | 109 |
| osx | nptl | 7 | 101 |
| freebsd | nptl | 7 | 100 |
| xfree86 | nptl | 7 | 98 |
| opendarwin | nptl | 7 | 95 |
| minix | nptl | 7 | 93 |
| v7 | nptl | 7 | 91 |
| plan9 | nptl | 7 | 90 |
| redhat | nptl | 7 | 70 |
| osf1 | nptl | 7 | 57 |