| OS | Man Page | Section | Hits |
|---|---|---|---|
| linux | iswalpha | 3 | 786 |
| redhat | iswalpha | 3 | 669 |
| opensolaris | iswalpha | 3c | 644 |
| debian | iswalpha | 3 | 603 |
| opendarwin | iswalpha | 3 | 543 |
| centos | iswalpha | 3 | 535 |
| posix | iswalpha | 3p | 517 |
| x11r4 | iswalpha | 3 | 513 |
| plan9 | iswalpha | 3 | 509 |
| minix | iswalpha | 3 | 504 |
| v7 | iswalpha | 3 | 498 |
| sunos | iswalpha | 3c | 498 |
| freebsd | iswalpha | 3 | 496 |
| xfree86 | iswalpha | 3 | 486 |
| bsd | iswalpha | 3 | 480 |
| php | iswalpha | 3 | 473 |
| suse | iswalpha | 3 | 458 |
| mojave | iswalpha | 3 | 424 |
| centos | iswalpha | 3p | 385 |
| suse | iswalpha | 3p | 379 |
| mojave | iswalpha_l | 3 | 372 |
| freebsd | iswalpha_l | 3 | 366 |
| osx | iswalpha | 3 | 350 |
| osf1 | iswalpha | 3 | 288 |
| hpux | iswalpha | 3c | 287 |
| osx | iswalpha_l | 3 | 257 |
| netbsd | iswalpha | 3 | 231 |