| OS | Man Page | Section | Hits |
|---|---|---|---|
| opensolaris | towupper | 3 | 599 |
| mojave | towupper | 3 | 578 |
| centos | towupper | 3 | 542 |
| linux | towupper | 3 | 533 |
| v7 | towupper | 3 | 487 |
| php | towupper | 3 | 485 |
| minix | towupper | 3 | 484 |
| bsd | towupper | 3 | 463 |
| osx | towupper | 3 | 455 |
| x11r4 | towupper | 3 | 454 |
| xfree86 | towupper | 3 | 445 |
| opendarwin | towupper | 3 | 438 |
| suse | towupper | 3 | 431 |
| plan9 | towupper | 3 | 431 |
| debian | towupper | 3 | 402 |
| posix | towupper | 3p | 385 |
| mojave | towupper_l | 3 | 363 |
| osx | towupper_l | 3 | 345 |
| freebsd | towupper | 3 | 344 |
| sunos | towupper | 3c | 326 |
| freebsd | towupper_l | 3 | 319 |
| centos | towupper | 3p | 315 |
| redhat | towupper | 3 | 310 |
| suse | towupper | 3p | 305 |
| linux | towupper_l | 3 | 288 |
| osf1 | towupper | 3 | 277 |
| hpux | towupper | 3c | 229 |
| netbsd | towupper | 3 | 190 |