getppid() -- System Call (libc)

Get process identifier of parent process
#include <unistd.h>
getppid()

Every process  has a unique  number, called its process  id. fork() returns
the process id of a created child process to the parent process.

getppid()  returns  the  process  id  of  the requesting  process's  parent
process.  In this way, a wayward child process can discover the identity of
its parent.

See Also

fork(),
getpid(),
kill,
libc,
mktemp,
unistd.h
POSIX Standard, §4.1.1

© 2012 by Stephen A. Ness