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



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

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 aa Signal to All Other Members of aa 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.1-2017, <signal.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  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.opengroup.org/unix/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.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                            KILLPG(3)
