4.4BSD/usr/share/man/cat2/getpid.0

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GETPID(2)                   BSD Programmer's Manual                  GETPID(2)

NNAAMMEE
     ggeettppiidd, ggeettppppiidd - get parent or calling process identification

SSYYNNOOPPSSIISS
     ##iinncclluuddee <<uunniissttdd..hh>>

     _p_i_d___t
     ggeettppiidd(_v_o_i_d);

     _p_i_d___t
     ggeettppppiidd(_v_o_i_d);

DDEESSCCRRIIPPTTIIOONN
     GGeettppiidd() returns the process ID of the calling process.  The ID is guar-
     anteed to be unique and is useful for constructing temporary file names.

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

EERRRROORRSS
     The ggeettppiidd() and ggeettppppiidd() functions are always successful, and no return
     value is reserved to indicate an error.

SSEEEE AALLSSOO
     gethostid(2)

SSTTAANNDDAARRDDSS
     GGeettppiidd() and ggeettppppiidd() conform to IEEE Std 1003.1-1988 (``POSIX'').

4th Berkeley Distribution        June 4, 1993                                1