| OS | Man Page | Section | Hits |
|---|---|---|---|
| opensolaris | towupper | 3 | 264 |
| mojave | towupper | 3 | 261 |
| linux | towupper | 3 | 254 |
| php | towupper | 3 | 245 |
| centos | towupper | 3 | 242 |
| minix | towupper | 3 | 240 |
| xfree86 | towupper | 3 | 226 |
| plan9 | towupper | 3 | 221 |
| opendarwin | towupper | 3 | 219 |
| osx | towupper | 3 | 217 |
| x11r4 | towupper | 3 | 216 |
| bsd | towupper | 3 | 208 |
| v7 | towupper | 3 | 208 |
| suse | towupper | 3 | 198 |
| posix | towupper | 3p | 195 |
| debian | towupper | 3 | 189 |
| freebsd | towupper | 3 | 187 |
| mojave | towupper_l | 3 | 164 |
| freebsd | towupper_l | 3 | 163 |
| sunos | towupper | 3c | 162 |
| osx | towupper_l | 3 | 159 |
| redhat | towupper | 3 | 159 |
| linux | towupper_l | 3 | 153 |
| suse | towupper | 3p | 151 |
| osf1 | towupper | 3 | 141 |
| centos | towupper | 3p | 136 |
| hpux | towupper | 3c | 112 |
| netbsd | towupper | 3 | 95 |