1KILLPG(3P)                 POSIX Programmer's Manual                KILLPG(3P)
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PROLOG

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

12       killpg — send a signal to a process group
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SYNOPSIS

15       #include <signal.h>
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17       int killpg(pid_t pgrp, int sig);
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DESCRIPTION

20       The killpg() function shall send the signal specified  by  sig  to  the
21       process group specified by pgrp.
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23       If  pgrp  is  greater  than 1, killpg(pgrp, sig) shall be equivalent to
24       kill(-pgrp, sig). If pgrp is less than or equal to 1, the  behavior  of
25       killpg() is undefined.
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RETURN VALUE

28       Refer to kill().
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ERRORS

31       Refer to kill().
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33       The following sections are informative.
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EXAMPLES

36   Sending a Signal to All Other Members of a Process Group
37       The following example shows how the calling process could send a signal
38       to all other members of its  process  group.  To  prevent  itself  from
39       receiving  the  signal  it  first  makes itself immune to the signal by
40       ignoring it.
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43           #include <signal.h>
44           #include <unistd.h>
45           ...
46               if (signal(SIGUSR1, SIG_IGN) == SIG_ERR)
47                   /* Handle error */;
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49               if (killpg(getpgrp(), SIGUSR1) == -1)
50                   /* Handle error */;"
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APPLICATION USAGE

53       None.
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RATIONALE

56       None.
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FUTURE DIRECTIONS

59       None.
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SEE ALSO

62       getpgid(), getpid(), kill(), raise()
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64       The Base Definitions volume of POSIX.1‐2017, <signal.h>
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67       Portions of this text are reprinted and reproduced in  electronic  form
68       from  IEEE Std 1003.1-2017, Standard for Information Technology -- Por‐
69       table Operating System Interface (POSIX), The Open Group Base  Specifi‐
70       cations  Issue  7, 2018 Edition, Copyright (C) 2018 by the Institute of
71       Electrical and Electronics Engineers, Inc and The Open Group.   In  the
72       event of any discrepancy between this version and the original IEEE and
73       The Open Group Standard, the original IEEE and The Open Group  Standard
74       is  the  referee document. The original Standard can be obtained online
75       at http://www.opengroup.org/unix/online.html .
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77       Any typographical or formatting errors that appear  in  this  page  are
78       most likely to have been introduced during the conversion of the source
79       files to man page format. To report such errors,  see  https://www.ker‐
80       nel.org/doc/man-pages/reporting_bugs.html .
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84IEEE/The Open Group                  2017                           KILLPG(3P)
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