Merge branch 'vendor/AWK'
[dragonfly.git] / bin / kill / kill.1
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2.\" Copyright (c) 1980, 1990, 1993
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4.\"
5.\" This code is derived from software contributed to Berkeley by
6.\" the Institute of Electrical and Electronics Engineers, Inc.
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11.\" 1. Redistributions of source code must retain the above copyright
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16.\" 3. All advertising materials mentioning features or use of this software
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35.\"
36.\" @(#)kill.1 8.2 (Berkeley) 4/28/95
17745ede 37.\" $FreeBSD: src/bin/kill/kill.1,v 1.22 2010/12/21 22:47:34 jilles Exp $
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38.\"
39.Dd April 28, 1995
40.Dt KILL 1
41.Os
42.Sh NAME
43.Nm kill
44.Nd terminate or signal a process
45.Sh SYNOPSIS
46.Nm
47.Op Fl s Ar signal_name
17745ede 48.Ar pid ...
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49.Nm
50.Fl l
51.Op Ar exit_status
52.Nm
53.Fl Ar signal_name
17745ede 54.Ar pid ...
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55.Nm
56.Fl Ar signal_number
17745ede 57.Ar pid ...
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58.Sh DESCRIPTION
59The
60.Nm
61utility sends a signal to the processes specified by the
62.Ar pid
17745ede 63operands.
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64.Pp
65Only the super-user may send signals to other users' processes.
66.Pp
67The options are as follows:
17745ede 68.Bl -tag -width indent
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69.It Fl s Ar signal_name
70A symbolic signal name specifying the signal to be sent instead of the
71default
72.Dv TERM .
73.It Fl l Op Ar exit_status
74If no operand is given, list the signal names; otherwise, write
75the signal name corresponding to
76.Ar exit_status .
77.It Fl Ar signal_name
78A symbolic signal name specifying the signal to be sent instead of the
79default
80.Dv TERM .
81.It Fl Ar signal_number
82A non-negative decimal integer, specifying the signal to be sent instead
83of the default
84.Dv TERM .
85.El
86.Pp
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87The following PIDs have special meanings:
88.Bl -tag -width indent
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89.It -1
90If superuser, broadcast the signal to all processes; otherwise broadcast
91to all processes belonging to the user.
92.El
93.Pp
94Some of the more commonly used signals:
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95.Pp
96.Bl -tag -width indent -compact
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97.It 1
98HUP (hang up)
99.It 2
100INT (interrupt)
101.It 3
102QUIT (quit)
103.It 6
104ABRT (abort)
105.It 9
106KILL (non-catchable, non-ignorable kill)
107.It 14
108ALRM (alarm clock)
109.It 15
110TERM (software termination signal)
111.El
112.Pp
113Some shells may provide a builtin
114.Nm
115command which is similar or identical to this utility.
116Consult the
117.Xr builtin 1
118manual page.
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119.Sh EXIT STATUS
120.Ex -std
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121.Sh EXAMPLES
122Terminate
17745ede 123the processes with PIDs 142 and 157:
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124.Pp
125.Dl "kill 142 157"
126.Pp
127Send the hangup signal
128.Pq Dv SIGHUP
17745ede 129to the process with PID 507:
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130.Pp
131.Dl "kill -s HUP 507"
132.Pp
17745ede 133Terminate the process group with PGID 117:
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134.Pp
135.Dl "kill -- -117"
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136.Sh SEE ALSO
137.Xr builtin 1 ,
138.Xr csh 1 ,
139.Xr killall 1 ,
140.Xr ps 1 ,
99512ac4 141.Xr sh 1 ,
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142.Xr kill 2 ,
143.Xr sigaction 2
144.Sh STANDARDS
145The
146.Nm
17745ede 147utility is expected to be
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148.St -p1003.2
149compatible.
150.Sh HISTORY
151A
152.Nm
153command appeared in
154.At v3 .
155.Sh BUGS
156A replacement for the command
157.Dq Li kill 0
158for
bea69b8a 159.Xr csh 1
984263bc 160users should be provided.