getpid, getppid - get process identification

#include <sys/types.h>
#include <unistd.h> pid_t getpid(void);
pid_t getppid(void);

R getpid () returns the process ID of the current process. (This is often used by routines that generate unique temporary filenames.) R getppid () returns the process ID of the parent of the current process.

These functions are always successful.

POSIX.1-2001, 4.3BSD, SVr4

fork(2), kill(2), exec(3), mkstemp(3), tempnam(3), tmpfile(3), tmpnam(3), credentials(7)