| OS | Man Page | Section | Hits |
|---|---|---|---|
| opensolaris | towupper | 3 | 674 |
| mojave | towupper | 3 | 641 |
| centos | towupper | 3 | 596 |
| linux | towupper | 3 | 590 |
| v7 | towupper | 3 | 541 |
| php | towupper | 3 | 538 |
| minix | towupper | 3 | 537 |
| bsd | towupper | 3 | 516 |
| osx | towupper | 3 | 508 |
| x11r4 | towupper | 3 | 506 |
| xfree86 | towupper | 3 | 494 |
| plan9 | towupper | 3 | 484 |
| suse | towupper | 3 | 477 |
| opendarwin | towupper | 3 | 471 |
| debian | towupper | 3 | 452 |
| posix | towupper | 3p | 429 |
| mojave | towupper_l | 3 | 411 |
| osx | towupper_l | 3 | 382 |
| freebsd | towupper | 3 | 380 |
| centos | towupper | 3p | 374 |
| sunos | towupper | 3c | 367 |
| suse | towupper | 3p | 357 |
| freebsd | towupper_l | 3 | 356 |
| redhat | towupper | 3 | 348 |
| linux | towupper_l | 3 | 323 |
| osf1 | towupper | 3 | 308 |
| hpux | towupper | 3c | 271 |
| netbsd | towupper | 3 | 215 |