| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | prnio | 7i | 198 |
| xfree86 | prnio | 7i | 185 |
| sunos | prnio | 7i | 175 |
| posix | prnio | 7i | 164 |
| mojave | prnio | 7i | 159 |
| suse | prnio | 7i | 159 |
| v7 | prnio | 7i | 154 |
| php | prnio | 7i | 153 |
| redhat | prnio | 7i | 152 |
| minix | prnio | 7i | 149 |
| centos | prnio | 7i | 147 |
| plan9 | prnio | 7i | 145 |
| opensolaris | prnio | 7i | 143 |
| osf1 | prnio | 7i | 143 |
| hpux | prnio | 7i | 134 |
| debian | prnio | 7i | 133 |