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+<HTML>
+<HEAD>
+<TITLE>kill(2)</TITLE>
+</HEAD>
+<BODY>
+<H1>kill(2)</H1>
+<HR>
+<PRE>
+
+</PRE>
+<H2>NAME</H2><PRE>
+     kill - send signal to a process
+
+
+</PRE>
+<H2>SYNOPSIS</H2><PRE>
+     <STRONG>#include</STRONG> <STRONG>&lt;sys/types.h&gt;</STRONG>
+     <STRONG>#include</STRONG> <STRONG>&lt;signal.h&gt;</STRONG>
+
+     <STRONG>int</STRONG> <STRONG>kill(pid_t</STRONG> <EM>pid</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>sig</EM><STRONG>)</STRONG>
+
+
+</PRE>
+<H2>DESCRIPTION</H2><PRE>
+     <STRONG>Kill</STRONG> sends the signal <EM>sig</EM> to a process, specified by the  process  number
+     <EM>pid</EM>.   <EM>Sig</EM> may be one of the signals specified in <STRONG><A HREF="../man2/sigaction.2.html">sigaction(2)</A></STRONG>, or it may
+     be 0, in which case error checking is performed but no signal is actually
+     sent. This can be used to check the validity of <EM>pid</EM>.
+
+     The sending and receiving processes must have the same effective user ID,
+     otherwise this call is restricted to the super-user.
+
+     If the process number is 0, the signal is sent to all  processes  in  the
+     sender's process group.
+
+     If the process number is -1 and the user is the super-user, the signal is
+     broadcast  universally except to <STRONG>init</STRONG> and the process sending the signal.
+     If the process number is -1 and the  user  is  not  the  super-user,  the
+     signal is broadcast universally to all processes with the same uid as the
+     user except the process sending the signal.  No error is returned if  any
+     process could be signaled.
+
+     If the process number is negative but not -1, the signal is sent  to  all
+     processes  whose  process  group ID is equal to the absolute value of the
+     process number.
+
+     Processes may send signals to themselves.
+
+
+</PRE>
+<H2>RETURN VALUE</H2><PRE>
+     Upon successful completion, a value of 0 is returned.  Otherwise, a value
+     of -1 is returned and <STRONG>errno</STRONG> is set to indicate the error.
+
+
+</PRE>
+<H2>ERRORS</H2><PRE>
+     <STRONG>Kill</STRONG> will fail and no signal will be sent if any of the following occur:
+
+     [EINVAL]       <EM>Sig</EM> is not a valid signal number.
+
+     [ESRCH]        No process can be found corresponding to that specified by
+                    <EM>pid</EM>.
+
+     [ESRCH]        The process id was given as 0 but the sending process does
+                    not have a process group.
+
+
+     [EPERM]        The  sending  process  is  not  the  super-user  and   its
+                    effective  user id does not match the effective user-id of
+                    the receiving process.  When signaling  a  process  group,
+                    this  error was returned if any members of the group could
+                    not be signaled.
+
+
+</PRE>
+<H2>SEE ALSO</H2><PRE>
+     <STRONG><A HREF="../man2/getpid.2.html">getpid(2)</A></STRONG>, <STRONG><A HREF="../man2/getpgrp.2.html">getpgrp(2)</A></STRONG>, <STRONG><A HREF="../man2/sigaction.2.html">sigaction(2)</A></STRONG>, <STRONG><A HREF="../man3/raise.3.html">raise(3)</A></STRONG>.
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+</PRE>
+</BODY>
+</HTML>