| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | towupper | 3 | 220 |
| mojave | towupper | 3 | 217 |
| opensolaris | towupper | 3 | 214 |
| php | towupper | 3 | 199 |
| minix | towupper | 3 | 193 |
| centos | towupper | 3 | 190 |
| xfree86 | towupper | 3 | 187 |
| plan9 | towupper | 3 | 185 |
| opendarwin | towupper | 3 | 181 |
| osx | towupper | 3 | 178 |
| x11r4 | towupper | 3 | 177 |
| bsd | towupper | 3 | 167 |
| v7 | towupper | 3 | 167 |
| freebsd | towupper | 3 | 162 |
| posix | towupper | 3p | 162 |
| suse | towupper | 3 | 160 |
| debian | towupper | 3 | 150 |
| freebsd | towupper_l | 3 | 142 |
| sunos | towupper | 3c | 137 |
| osx | towupper_l | 3 | 131 |
| redhat | towupper | 3 | 131 |
| linux | towupper_l | 3 | 129 |
| suse | towupper | 3p | 127 |
| mojave | towupper_l | 3 | 127 |
| osf1 | towupper | 3 | 118 |
| centos | towupper | 3p | 105 |
| hpux | towupper | 3c | 82 |
| netbsd | towupper | 3 | 77 |