getpid(2)

NAME
     getpid, getppid - get process identification

SYNOPSIS
     #include <sys/types.h>
     #include <unistd.h>

     pid_t getpid(void)
     pid_t getppid(void)

DESCRIPTION
     Getpid returns the process ID of the current process.  Most often  it  is
     used to generate uniquely-named temporary files.

     Getppid returns the process ID of the parent of the current process.

SEE ALSO
     fork(2).