GETPID(2)
NAME
getpid, getppid − get process identification
USAGE
pid = getpid() long pid;
ppid = getppid() long ppid;
DESCRIPTION
Getpid returns pid, the process ID of the current process. It is used most often with the host identifier gethostid(2) to generate uniquely-named temporary files.
Getppid returns ppid, the process ID of the parent of the current process.
RETURN VALUE
A successful getpid returns the process ID of the current process.