1.\" $NetBSD: kill.1,v 1.18 2003/08/07 09:05:13 agc Exp $ 2.\" 3.\" Copyright (c) 1980, 1990, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" the Institute of Electrical and Electronics Engineers, Inc. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 3. Neither the name of the University nor the names of its contributors 18.\" may be used to endorse or promote products derived from this software 19.\" without specific prior written permission. 20.\" 21.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31.\" SUCH DAMAGE. 32.\" 33.\" @(#)kill.1 8.2 (Berkeley) 4/28/95 34.\" 35.Dd April 28, 1995 36.Dt KILL 1 37.Os 38.Sh NAME 39.Nm kill 40.Nd terminate or signal a process 41.Sh SYNOPSIS 42.Nm 43.Op Fl s Ar signal_name 44.Ar pid 45\&... 46.Nm 47.Fl l 48.Op Ar signal_number 49.Nm 50.Fl signal_name 51.Ar pid 52\&... 53.Nm 54.Fl signal_number 55.Ar pid 56\&... 57.Sh DESCRIPTION 58The 59.Nm 60utility sends a signal to the process(es) specified 61by the pid operand(s). 62.Pp 63Only the super-user may send signals to other users' processes. 64.Pp 65The options are as follows: 66.Pp 67.Bl -tag -width Ds 68.It Fl s Ar signal_name 69A symbolic signal name specifying the signal to be sent instead of the 70default 71.Dv TERM . 72.It Fl l Op Ar signal_number 73If no operand is given, list the signal names; otherwise, write 74the signal name corresponding to 75.Ar signal_number 76provided. 77.It Fl signal_name 78A symbolic signal name specifying the signal to be sent instead of the 79default 80.Dv TERM . 81.It Fl signal_number 82A non-negative decimal integer, specifying the signal to be sent instead 83of the default 84.Dv TERM . 85.El 86.Pp 87The following pids have special meanings: 88.Bl -tag -width Ds -compact 89.It -1 90If superuser, broadcast the signal to all processes; otherwise broadcast 91to all processes belonging to the user. 92.It 0 93Broadcast the signal to all processes in the current process group 94belonging to the user. 95.El 96.Pp 97Some of the more commonly used signals: 98.Bl -tag -width Ds -compact 99.It 1 100HUP (hang up) 101.It 2 102INT (interrupt) 103.It 3 104QUIT (quit) 105.It 6 106ABRT (abort) 107.It 9 108KILL (non-catchable, non-ignorable kill) 109.It 14 110ALRM (alarm clock) 111.It 15 112TERM (software termination signal) 113.El 114.Pp 115.Nm 116is a built-in to 117.Xr csh 1 ; 118it allows job specifiers of the form ``%...'' as arguments 119so process id's are not as often used as 120.Nm 121arguments. 122See 123.Xr csh 1 124for details. 125.Sh SEE ALSO 126.Xr csh 1 , 127.Xr pgrep 1 , 128.Xr pkill 1 , 129.Xr ps 1 , 130.Xr kill 2 , 131.Xr sigaction 2 , 132.Xr signal 7 133.Sh STANDARDS 134The 135.Nm 136function is expected to be 137.St -p1003.2 138compatible. 139.Sh HISTORY 140A 141.Nm 142command appeared in 143.At v6 . 144