killpg man page on Gentoo

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KILLPG(3P)		   POSIX Programmer's Manual		    KILLPG(3P)

PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the	 corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.

NAME
       killpg — send a signal to a process group

SYNOPSIS
       #include <signal.h>

       int killpg(pid_t pgrp, int sig);

DESCRIPTION
       The killpg() function shall send the signal specified  by  sig  to  the
       process group specified by pgrp.

       If  pgrp	 is  greater  than 1, killpg(pgrp, sig) shall be equivalent to
       kill(−pgrp, sig). If pgrp is less than or equal to 1, the  behavior  of
       killpg() is undefined.

RETURN VALUE
       Refer to kill().

ERRORS
       Refer to kill().

       The following sections are informative.

EXAMPLES
   Sending a Signal to All Other Members of a Process Group
       The following example shows how the calling process could send a signal
       to all other members of its  process  group.  To	 prevent  itself  from
       receiving  the  signal  it  first  makes itself immune to the signal by
       ignoring it.

	   #include <signal.h>
	   #include <unistd.h>
	   ...
	       if (signal(SIGUSR1, SIG_IGN) == SIG_ERR)
		   /* Handle error */;

	       if (killpg(getpgrp(), SIGUSR1) == −1)
		   /* Handle error */;"

APPLICATION USAGE
       None.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       getpgid(), getpid(), kill(), raise()

       The Base Definitions volume of POSIX.1‐2008, <signal.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),	The  Open  Group  Base
       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
       cal and Electronics Engineers,  Inc  and	 The  Open  Group.   (This  is
       POSIX.1-2008  with  the	2013  Technical Corrigendum 1 applied.) In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained	online
       at http://www.unix.org/online.html .

       Any  typographical  or  formatting  errors that appear in this page are
       most likely to have been introduced during the conversion of the source
       files  to  man page format. To report such errors, see https://www.ker‐
       nel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group		     2013			    KILLPG(3P)
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