| OS | Man Page | Section | Hits |
|---|---|---|---|
| sunos | niserror | 1 | 472 |
| bsd | niserror | 1 | 454 |
| suse | niserror | 1 | 416 |
| opendarwin | niserror | 1 | 415 |
| linux | niserror | 1 | 390 |
| minix | niserror | 1 | 368 |
| mojave | niserror | 1 | 367 |
| opensolaris | niserror | 1 | 366 |
| centos | niserror | 1 | 353 |
| v7 | niserror | 1 | 340 |
| redhat | niserror | 1 | 330 |
| xfree86 | niserror | 1 | 330 |
| osf1 | niserror | 1 | 329 |
| debian | niserror | 1 | 325 |
| x11r4 | niserror | 1 | 321 |
| plan9 | niserror | 1 | 299 |
| osx | niserror | 1 | 258 |
| hpux | niserror | 1 | 230 |