getppid(2freebsd)

getpid, getppid - get parent or calling process identification

.Lb libc

.In unistd.h pid_t getpid void pid_t getppid void

The getpid system call returns the process ID of the calling process. Though the ID is guaranteed to be unique, it should NOT be used for constructing temporary file names, for security reasons; see mkstemp(3) instead.

The getpid and getppid system calls are always successful, and no return value is reserved to indicate an error.

fork(2), getpgrp(2), kill(2), setpgid(2), setsid(2), exec(3)

The getpid and getppid system calls are expected to conform to -p1003.1-90.

The getpid function appeared in AT&T v7 .