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Linux 2.6 - man page for killpg (linux section 3)

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

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
None.
APPLICATION USAGE
None.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
getpgid() , getpid() , kill() , raise() , the Base Definitions volume of IEEE Std 1003.1-2001, <signal.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 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 .
IEEE
/The Open Group 2003 KILLPG(P)