killpg(3p) — Linux manual page

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(3p).

ERRORS

       Refer to kill(3p).

       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(3p), getpid(3p), kill(3p), raise(3p)

       The Base Definitions volume of POSIX.1‐2017, signal.h(0p)

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(3P)

Pages that refer to this page: signal.h(0p)

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