| OS | Man Page | Section | Hits |
|---|---|---|---|
| sunos | prnio | 7i | 350 |
| freebsd | prnio | 7i | 342 |
| xfree86 | prnio | 7i | 331 |
| opensolaris | prnio | 7i | 317 |
| mojave | prnio | 7i | 312 |
| posix | prnio | 7i | 308 |
| v7 | prnio | 7i | 308 |
| minix | prnio | 7i | 296 |
| plan9 | prnio | 7i | 296 |
| osf1 | prnio | 7i | 288 |
| suse | prnio | 7i | 284 |
| redhat | prnio | 7i | 282 |
| hpux | prnio | 7i | 277 |
| php | prnio | 7i | 274 |
| centos | prnio | 7i | 273 |
| debian | prnio | 7i | 253 |