| OS | Man Page | Section | Hits |
|---|---|---|---|
| opensolaris | attropen | 3c | 559 |
| sunos | attropen | 3c | 448 |
| xfree86 | attropen | 3c | 416 |
| posix | attropen | 3c | 394 |
| opendarwin | attropen | 3c | 372 |
| v7 | attropen | 3c | 369 |
| osx | attropen | 3c | 364 |
| debian | attropen | 3c | 360 |
| minix | attropen | 3c | 354 |
| suse | attropen | 3c | 352 |
| centos | attropen | 3c | 350 |
| php | attropen | 3c | 342 |
| linux | attropen | 3c | 336 |
| plan9 | attropen | 3c | 328 |
| mojave | attropen | 3c | 327 |
| x11r4 | attropen | 3c | 325 |
| bsd | attropen | 3c | 300 |
| osf1 | attropen | 3c | 299 |
| ultrix | attropen | 3c | 277 |