| OS | Man Page | Section | Hits |
|---|---|---|---|
| v7 | getpid | 2 | 1,594 |
| minix | getpid | 2 | 1,317 |
| freebsd | getpid | 2 | 995 |
| linux | getpid | 2 | 919 |
| opensolaris | getpid | 2 | 832 |
| centos | getpid | 2 | 811 |
| posix | getpid | 3p | 779 |
| bsd | getpid | 2 | 708 |
| x11r4 | getpid | 3p | 684 |
| suse | getpid | 2 | 683 |
| debian | getpid | 2 | 680 |
| mojave | getpid | 2 | 636 |
| php | getpid | 3p | 628 |
| hpux | getpid | 2 | 625 |
| opendarwin | getpid | 2 | 622 |
| redhat | getpid | 2 | 578 |
| osf1 | getpid | 2 | 576 |
| osx | getpid | 2 | 575 |
| xfree86 | getpid | 3p | 569 |
| centos | getpid | 3p | 539 |
| netbsd | getpid | 2 | 527 |
| sunos | getpid | 2 | 520 |
| suse | getpid | 3p | 497 |
| freebsd | pdgetpid | 2 | 479 |
| plan9 | getpid | 2 | 466 |
| ultrix | getpid | 2 | 428 |
| linux | getpid | 3 | 382 |
| bsd | getpid | 3f | 345 |
| sunos | ucred_getpid | 3c | 304 |
| centos | getpidcon | 3 | 294 |
| debian | getpidcon | 3 | 259 |
| centos | getpidcon_raw | 3 | 238 |
| php | posix_getpid | 3 | 238 |
| opensolaris | ucred_getpid | 3c | 218 |