| OS | Man Page | Section | Hits |
|---|---|---|---|
| sunos | prnio | 7i | 295 |
| freebsd | prnio | 7i | 286 |
| xfree86 | prnio | 7i | 278 |
| opensolaris | prnio | 7i | 275 |
| mojave | prnio | 7i | 262 |
| v7 | prnio | 7i | 259 |
| posix | prnio | 7i | 249 |
| plan9 | prnio | 7i | 246 |
| minix | prnio | 7i | 245 |
| osf1 | prnio | 7i | 245 |
| suse | prnio | 7i | 232 |
| hpux | prnio | 7i | 230 |
| redhat | prnio | 7i | 229 |
| php | prnio | 7i | 225 |
| centos | prnio | 7i | 223 |
| debian | prnio | 7i | 204 |