151 lines
3.8 KiB
Groff
151 lines
3.8 KiB
Groff
.\" $NetBSD: kill.1,v 1.22 2012/03/22 07:58:17 wiz Exp $
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.\"
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.\" Copyright (c) 1980, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Institute of Electrical and Electronics Engineers, Inc.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)kill.1 8.2 (Berkeley) 4/28/95
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.\"
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.Dd April 28, 1995
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.Dt KILL 1
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.Os
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.Sh NAME
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.Nm kill
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.Nd terminate or signal a process
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.Sh SYNOPSIS
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.Nm
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.Op Fl s Ar signal_name
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.Ar pid
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\&...
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.Nm
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.Fl l
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.Op Ar exit_status
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.Nm
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.Fl signal_name
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.Ar pid
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\&...
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.Nm
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.Fl signal_number
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.Ar pid
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\&...
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.Sh DESCRIPTION
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The
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.Nm
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utility sends a signal to the process(es) specified
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by the pid operand(s).
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.Pp
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Only the super-user may send signals to other users' processes.
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.Pp
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The options are as follows:
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.Pp
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.Bl -tag -width Ds
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.It Fl s Ar signal_name
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A symbolic signal name specifying the signal to be sent instead of the
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default
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.Dv TERM .
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.It Fl l Op Ar exit_status
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Display the name of the signal corresponding to
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.Ar exit_status .
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.Ar exit_status
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may be the exit status of a command killed by a signal
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(see the
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special
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.Xr sh 1
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parameter
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.Sq ?\& )
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or a signal number.
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.Pp
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If no operand is given, display the names of all the signals.
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.It Fl signal_name
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A symbolic signal name specifying the signal to be sent instead of the
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default
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.Dv TERM .
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.It Fl signal_number
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A non-negative decimal integer, specifying the signal to be sent instead
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of the default
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.Dv TERM .
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.El
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.Pp
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The following pids have special meanings:
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.Bl -tag -width Ds -compact
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.It -1
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If superuser, broadcast the signal to all processes; otherwise broadcast
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to all processes belonging to the user.
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.It 0
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Broadcast the signal to all processes in the current process group
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belonging to the user.
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.El
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.Pp
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Some of the more commonly used signals:
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.Bl -tag -width Ds -compact
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.It 1
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HUP (hang up)
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.It 2
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INT (interrupt)
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.It 3
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QUIT (quit)
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.It 6
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ABRT (abort)
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.It 9
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KILL (non-catchable, non-ignorable kill)
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.It 14
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ALRM (alarm clock)
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.It 15
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TERM (software termination signal)
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.El
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.Pp
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.Nm
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is a built-in to
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.Xr csh 1 ;
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it allows job specifiers of the form ``%...'' as arguments
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so process id's are not as often used as
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.Nm
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arguments.
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See
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.Xr csh 1
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for details.
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.Sh SEE ALSO
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.Xr csh 1 ,
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.Xr pgrep 1 ,
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.Xr pkill 1 ,
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.Xr ps 1 ,
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.Xr kill 2 ,
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.Xr sigaction 2 ,
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.Xr signal 7
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.Sh STANDARDS
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The
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.Nm
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function is expected to be
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.St -p1003.2
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compatible.
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.Sh HISTORY
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A
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.Nm
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command appeared in
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.At v6 .
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