| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | prnio | 7i | 81 |
| xfree86 | prnio | 7i | 79 |
| sunos | prnio | 7i | 74 |
| suse | prnio | 7i | 64 |
| redhat | prnio | 7i | 62 |
| v7 | prnio | 7i | 60 |
| mojave | prnio | 7i | 59 |
| php | prnio | 7i | 55 |
| opensolaris | prnio | 7i | 50 |
| plan9 | prnio | 7i | 48 |
| posix | prnio | 7i | 47 |
| centos | prnio | 7i | 45 |
| hpux | prnio | 7i | 43 |
| debian | prnio | 7i | 41 |
| osf1 | prnio | 7i | 40 |
| minix | prnio | 7i | 37 |