| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | prnio | 7i | 56 |
| xfree86 | prnio | 7i | 51 |
| sunos | prnio | 7i | 50 |
| redhat | prnio | 7i | 35 |
| suse | prnio | 7i | 33 |
| mojave | prnio | 7i | 31 |
| opensolaris | prnio | 7i | 27 |
| php | prnio | 7i | 27 |
| v7 | prnio | 7i | 27 |
| posix | prnio | 7i | 22 |
| centos | prnio | 7i | 20 |
| osf1 | prnio | 7i | 20 |
| plan9 | prnio | 7i | 19 |
| hpux | prnio | 7i | 18 |
| minix | prnio | 7i | 16 |
| debian | prnio | 7i | 15 |