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GETPID(2)                   BSD System Calls Manual                  GETPID(2)

NAME
     getpid, getppid -- get parent or calling process identification

SYNOPSIS
     #include <&lt;unistd.h>&gt;

     pid_t
     getpid(void);

     pid_t
     getppid(void);

DESCRIPTION
     getpid() 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; see mkstemp(3) instead.

     getppid() returns the process ID of the parent of the calling process.

RETURN VALUES
     These functions are always successful, and no return value is reserved to
     indicate an error.

SEE ALSO
     gethostid(3)

STANDARDS
     getpid() and getppid() conform to IEEE Std 1003.1-2008 (``POSIX.1'').

BSD                             March 30, 2013                             BSD