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Minix/CD-ROM-2.0/MINIX/MANUALS/CAT2/KILL.2

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+KILL(2)                   Minix Programmer's Manual                    KILL(2)
+
+
+NAME
+     kill - send signal to a process
+
+SYNOPSIS
+     #include <sys/types.h>
+     #include <signal.h>
+
+     int kill(pid_t pid, int sig)
+
+DESCRIPTION
+     Kill sends the signal sig to a process, specified by the  process  number
+     pid.   Sig may be one of the signals specified in sigaction(2), 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 pid.
+
+     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 init 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.
+
+RETURN VALUE
+     Upon successful completion, a value of 0 is returned.  Otherwise, a value
+     of -1 is returned and errno is set to indicate the error.
+
+ERRORS
+     Kill will fail and no signal will be sent if any of the following occur:
+
+     [EINVAL]       Sig is not a valid signal number.
+
+     [ESRCH]        No process can be found corresponding to that specified by
+                    pid.
+
+     [ESRCH]        The process id was given as 0 but the sending process does
+                    not have a process group.
+
+
+
+
+4BSD                              May 14, 1986                               1
+
+
+
+KILL(2)                   Minix Programmer's Manual                    KILL(2)
+
+
+     [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.
+
+SEE ALSO
+     getpid(2), getpgrp(2), sigaction(2), raise(3).
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+4BSD                              May 14, 1986                               2
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