| OS | Man Page | Section | Hits |
|---|---|---|---|
| bsd | sigblock | 2 | 638 |
| sunos | sigblock | 3ucb | 622 |
| netbsd | sigblock | 3 | 587 |
| linux | sigblock | 3 | 585 |
| opensolaris | sigblock | 3ucb | 568 |
| redhat | sigblock | 2 | 527 |
| suse | sigblock | 3 | 495 |
| opendarwin | sigblock | 3 | 494 |
| osf1 | sigblock | 2 | 492 |
| debian | sigblock | 2 | 487 |
| centos | sigblock | 3 | 471 |
| mojave | sigblock | 2 | 452 |
| hpux | sigblock | 3 | 433 |
| freebsd | sigblock | 2 | 422 |
| osx | sigblock | 2 | 400 |
| ultrix | sigblock | 2 | 352 |
| v7 | sigblock | 3 | 352 |
| minix | sigblock | 3 | 349 |
| debian | sigblock | 3 | 336 |
| x11r4 | sigblock | 3 | 335 |
| xfree86 | sigblock | 3 | 323 |
| plan9 | sigblock | 3 | 311 |
| php | sigblock | 3 | 302 |