kill/kill.1

   1 .\" Copyright (c) 1980, 1990, 1993
   2 .\"     The Regents of the University of California.  All rights reserved.
   3 .\"
   4 .\" This code is derived from software contributed to Berkeley by
   5 .\" the Institute of Electrical and Electronics Engineers, Inc.
   6 .\"
   7 .\" Redistribution and use in source and binary forms, with or without
   8 .\" modification, are permitted provided that the following conditions
   9 .\" are met:
  10 .\" 1. Redistributions of source code must retain the above copyright
  11 .\"    notice, this list of conditions and the following disclaimer.
  12 .\" 2. Redistributions in binary form must reproduce the above copyright
  13 .\"    notice, this list of conditions and the following disclaimer in the
  14 .\"    documentation and/or other materials provided with the distribution.
  15 .\" 3. All advertising materials mentioning features or use of this software
  16 .\"    must display the following acknowledgement:
  17 .\"     This product includes software developed by the University of
  18 .\"     California, Berkeley and its contributors.
  19 .\" 4. Neither the name of the University nor the names of its contributors
  20 .\"    may be used to endorse or promote products derived from this software
  21 .\"    without specific prior written permission.
  22 .\"
  23 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33 .\" SUCH DAMAGE.
  34 .\"
  35 .\"     @(#)kill.1      8.2 (Berkeley) 4/28/95
  36 .\" $FreeBSD: src/bin/kill/kill.1,v 1.11.2.1 2000/12/08 13:34:35 ru Exp $
  37 .\"
  38 .Dd April 28, 1995
  39 .Dt KILL 1
  40 .Os
  41 .Sh NAME
  42 .Nm kill
  43 .Nd terminate or signal a process
  44 .Sh SYNOPSIS
  45 .Nm
  46 .Op Fl s Ar signal_name
  47 .Ar pid
  48 \&...
  49 .Nm
  50 .Fl l
  51 .Op Ar exit_status
  52 .Nm
  53 .Fl signal_name
  54 .Ar pid
  55 \&...
  56 .Nm
  57 .Fl signal_number
  58 .Ar pid
  59 \&...
  60 .Sh DESCRIPTION
  61 The
  62 .Nm
  63 utility sends a signal to the processes specified by the pid operand(s).
  64 .Pp
  65 Only the super-user may send signals to other users' processes.
  66 .Pp
  67 The options are as follows:
  68 .Pp
  69 .Bl -tag -width Ds
  70 .It Fl s Ar signal_name
  71 A symbolic signal name specifying the signal to be sent instead of the
  72 default
  73 .Dv TERM .
  74 .It Fl l Op Ar exit_status
  75 If no operand is given, list the signal names; otherwise, write
  76 the signal name corresponding to
  77 .Ar exit_status .
  78 .It Fl signal_name
  79 A symbolic signal name specifying the signal to be sent instead of the
  80 default
  81 .Dv TERM .
  82 .It Fl signal_number
  83 A non-negative decimal integer, specifying the signal to be sent instead
  84 of the default
  85 .Dv TERM .
  86 .El
  87 .Pp
  88 The following pids have special meanings:
  89 .Bl -tag -width Ds -compact
  90 .It -1
  91 If superuser, broadcast the signal to all processes; otherwise broadcast
  92 to all processes belonging to the user.
  93 .El
  94 .Pp
  95 Some of the more commonly used signals:
  96 .Bl -tag -width Ds -compact
  97 .It 1
  98 HUP (hang up)
  99 .It 2
 100 INT (interrupt)
 101 .It 3
 102 QUIT (quit)
 103 .It 6
 104 ABRT (abort)
 105 .It 9
 106 KILL (non-catchable, non-ignorable kill)
 107 .It 14
 108 ALRM (alarm clock)
 109 .It 15
 110 TERM (software termination signal)
 111 .El
 112 .Pp
 113 Some shells may provide a builtin
 114 .Nm
 115 command which is similar or identical to this utility.
 116 Consult the
 117 .Xr builtin 1
 118 manual page.
 119 .Sh SEE ALSO
 120 .Xr builtin 1 ,
 121 .Xr csh 1 ,
 122 .Xr killall 1 ,
 123 .Xr ps 1 ,
 124 .Xr kill 2 ,
 125 .Xr sigaction 2
 126 .Sh STANDARDS
 127 The
 128 .Nm
 129 function is expected to be
 130 .St -p1003.2
 131 compatible.
 132 .Sh HISTORY
 133 A
 134 .Nm
 135 command appeared in
 136 .At v6 .
 137 .Sh BUGS
 138 A replacement for the command
 139 .Dq Li kill 0
 140 for
 141 .Xr csh  1
 142 users should be provided.