| OS | Man Page | Section | Hits |
|---|---|---|---|
| freebsd | prnio | 7i | 255 |
| sunos | prnio | 7i | 247 |
| xfree86 | prnio | 7i | 233 |
| opensolaris | prnio | 7i | 231 |
| mojave | prnio | 7i | 218 |
| posix | prnio | 7i | 213 |
| v7 | prnio | 7i | 210 |
| minix | prnio | 7i | 206 |
| plan9 | prnio | 7i | 204 |
| osf1 | prnio | 7i | 203 |
| php | prnio | 7i | 201 |
| suse | prnio | 7i | 199 |
| redhat | prnio | 7i | 197 |
| centos | prnio | 7i | 195 |
| debian | prnio | 7i | 179 |
| hpux | prnio | 7i | 179 |