bionic (3) killpg.3posix.gz

Provided by: manpages-posix-dev_2013a-2_all bug

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>


       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 Electrical 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.kernel.org/doc/man-pages/reporting_bugs.html .