| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | sf | 4 | 372 |
| redhat | sf | 4 | 352 |
| opensolaris | sf | 7d | 293 |
| php | sf | 4 | 284 |
| suse | sf | 4 | 276 |
| minix | sf | 4 | 273 |
| debian | sf | 4 | 271 |
| netbsd | sf | 4 | 269 |
| centos | sf | 4 | 267 |
| freebsd | sf | 4 | 264 |
| osx | sf | 4 | 263 |
| plan9 | sf | 4 | 252 |
| mojave | sf | 4 | 243 |
| v7 | sf | 4 | 238 |
| xfree86 | sf | 4 | 228 |
| x11r4 | sf | 4 | 214 |
| bsd | sf | 4 | 203 |
| posix | sf | 4 | 196 |
| sunos | sf | 7d | 184 |
| osf1 | sf | 4 | 149 |
| hpux | sf | 4 | 147 |