| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | prnio | 7i | 147 |
| xfree86 | prnio | 7i | 128 |
| sunos | prnio | 7i | 125 |
| suse | prnio | 7i | 110 |
| mojave | prnio | 7i | 108 |
| redhat | prnio | 7i | 105 |
| v7 | prnio | 7i | 102 |
| minix | prnio | 7i | 100 |
| php | prnio | 7i | 99 |
| centos | prnio | 7i | 96 |
| posix | prnio | 7i | 96 |
| debian | prnio | 7i | 94 |
| osf1 | prnio | 7i | 91 |
| plan9 | prnio | 7i | 90 |
| opensolaris | prnio | 7i | 89 |
| hpux | prnio | 7i | 83 |