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+.\"	$NetBSD: pkill.1,v 1.33 2024/10/07 06:14:05 roy Exp $
+.\"
+.\" Copyright (c) 2002 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by Andrew Doran.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd October 6, 2024
+.Dt PKILL 1
+.Os
+.Sh NAME
+.Nm pkill ,
+.Nm pgrep ,
+.Nm prenice
+.Nd find or signal processes by name
+.Sh SYNOPSIS
+.Nm pgrep
+.Op Fl fiLlnqvx
+.Op Fl d Ar delim
+.Op Fl F Ar pidfile
+.Op Fl G Ar gid
+.Op Fl g Ar pgrp
+.Op Fl P Ar ppid
+.Op Fl s Ar sid
+.Op Fl t Ar tty
+.Op Fl U Ar uid
+.Op Fl u Ar euid
+.Ar pattern ...
+.Nm pkill
+.Op Fl signal
+.Op Fl fiLlnvx
+.Op Fl F Ar pidfile
+.Op Fl G Ar gid
+.Op Fl g Ar pgrp
+.Op Fl P Ar ppid
+.Op Fl s Ar sid
+.Op Fl t Ar tty
+.Op Fl U Ar uid
+.Op Fl u Ar euid
+.Ar pattern ...
+.Nm prenice
+.Op Fl l
+.Ar priority
+.Ar pattern ...
+.Sh DESCRIPTION
+The
+.Nm pgrep
+command searches the process table on the running system and prints the
+process IDs of all processes that match the criteria given on the command
+line.
+.Pp
+The
+.Nm pkill
+command searches the process table on the running system and signals all
+processes that match the criteria given on the command line.
+.Pp
+The
+.Nm prenice
+command searches the process table on the running system and sets the
+priority of all processes that match the criteria given on the command line.
+.Pp
+By default, matching applies to any substring of the command name
+.Pq Va argv[0] ,
+but options may be used to change this.
+Patterns are specified using extended regular expressions (see
+.Xr re_format 7 ) .
+.Pp
+The following options are available for
+.Nm pkill
+and
+.Nm pgrep :
+.Bl -tag -width ".Fl F Ar pidfile"
+.It Fl d Ar delim
+Specify a delimiter to be printed between each process ID.
+The default is a newline.
+This option can only be used with the
+.Nm pgrep
+command.
+.It Fl f
+Match against full argument lists.
+The default is to match against process names.
+.It Fl F Ar pidfile
+Restrict matches to processes which pid is stored in
+.Ar pidfile
+file.
+.It Fl G Ar gid
+Restrict matches to processes with a real group ID in the comma-separated
+list
+.Ar gid .
+.It Fl g Ar pgrp
+Restrict matches to processes with a process group ID in the comma-separated
+list
+.Ar pgrp .
+The value zero is taken to mean the process group ID of the running
+.Nm pgrep
+or
+.Nm pkill
+command.
+.It Fl i
+Ignore case distinctions in both the process table and the supplied pattern.
+.It Fl L
+The
+.Ar pidfile
+given for the
+.Fl F
+option must be locked with the
+.Xr flock 2
+syscall or created with
+.Xr pidfile_lock 3 .
+.It Fl l
+Long output.
+Print the process name in addition to the process ID for each matching
+process.
+If used in conjunction with
+.Fl f ,
+print the process ID and the full argument list for each matching process.
+.It Fl n
+Match only the most recently created process, if any.
+.It Fl P Ar ppid
+Restrict matches to processes with a parent process ID in the
+comma-separated list
+.Ar ppid .
+.It Fl s Ar sid
+Restrict matches to processes with a session ID in the comma-separated
+list
+.Ar sid .
+The value zero is taken to mean the session ID of the running
+.Nm pgrep
+or
+.Nm pkill
+command.
+.It Fl t Ar tty
+Restrict matches to processes associated with a terminal in the
+comma-separated list
+.Ar tty .
+Terminal names may be specified as a fully qualified path, in the form
+.Sq ttyXX ,
+or
+.Sq pts/N ,
+(where
+.Ar XX
+is any pair of letters, and
+.Ar N
+is a number),
+or the shortened forms
+.Sq XX
+or
+.Sq N .
+A single dash
+.Pq Sq -
+matches processes not associated with a terminal.
+.It Fl U Ar uid
+Restrict matches to processes with a real user ID in the comma-separated
+list
+.Ar uid .
+.It Fl u Ar euid
+Restrict matches to processes with an effective user ID in the
+comma-separated list
+.Ar euid .
+.It Fl v
+Reverse the sense of the matching; display processes that do not match the
+given criteria.
+.It Fl x
+Require an exact match of the process name, or argument list if
+.Fl f
+is given.
+The default is to match any substring.
+.It Fl signal
+A non-negative decimal number or symbolic signal name specifying the signal
+to be sent instead of the default TERM.
+This option is valid only when given as the first argument to
+.Nm pkill .
+.El
+.Pp
+The following option is also available for
+.Nm pgrep :
+.Bl -tag -width ".Fl F Ar pidfile"
+.It Fl q
+Quiet; do not write anything to standard output.
+.El
+.Pp
+The
+.Fl l
+flag is also available for
+.Nm prenice .
+.Pp
+Note that a running
+.Nm pgrep ,
+.Nm pkill ,
+or
+.Nm prenice
+process will never consider itself or system processes (kernel threads) as
+a potential match.
+.Sh IMPLEMENTATION NOTES
+The Sun Solaris implementation utilised procfs to obtain process information.
+This implementation utilises
+.Xr kvm 3
+instead.
+.Sh EXIT STATUS
+.Nm pgrep ,
+.Nm pkill ,
+and
+.Nm prenice
+return one of the following values upon exit:
+.Bl -tag -width foo
+.It 0
+One or more processes were matched.
+.It 1
+No processes were matched.
+.It 2
+Invalid options were specified on the command line.
+.It 3
+An internal error occurred.
+.El
+.Sh SEE ALSO
+.Xr grep 1 ,
+.Xr kill 1 ,
+.Xr ps 1 ,
+.Xr kill 2 ,
+.Xr sigaction 2 ,
+.Xr kvm 3 ,
+.Xr re_format 7 ,
+.Xr signal 7 ,
+.Xr renice 8
+.Sh HISTORY
+.Nm pkill
+and
+.Nm pgrep
+first appeared in
+.Nx 1.6 .
+They are modelled after utilities of the same name that appeared in Sun
+Solaris 7.
+.Pp
+.Nm prenice
+was introduced in
+.Nx 6.0 .
+.Sh AUTHORS
+.An Andrew Doran
+.Aq Mt ad@NetBSD.org .