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fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
85 lines
2.8 KiB
Groff
85 lines
2.8 KiB
Groff
.\" Copyright (c) 1987, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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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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.\" @(#)lock.1 8.1 (Berkeley) 6/6/93
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.\" $FreeBSD$
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.\"
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.Dd July 10, 2002
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.Dt LOCK 1
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.Os
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.Sh NAME
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.Nm lock
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.Nd reserve a terminal
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.Sh SYNOPSIS
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.Nm
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.Op Fl npv
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.Op Fl t Ar timeout
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.Sh DESCRIPTION
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The
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.Nm
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utility requests a password from the user, reads it again for verification
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and then will normally not relinquish the terminal until the password is
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repeated.
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There are two other conditions under which it will terminate: it
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will timeout after some interval of time and it may be killed by someone
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with the appropriate permission.
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.Pp
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The following options are available:
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.Bl -tag -width indent
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.It Fl n
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Do not use a timeout value.
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Terminal will be locked forever.
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.It Fl p
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A password is not requested, instead the user's current login password
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is used.
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.It Fl t Ar timeout
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The time limit (default 15 minutes) is changed to
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.Ar timeout
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minutes.
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.It Fl v
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Disable switching virtual terminals while this terminal is locked.
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This option is implemented in a way similar to the
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.Fl S
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option of
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.Xr vidcontrol 1 ,
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and thus has the same restrictions.
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It is only available if the terminal in question is a
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.Xr syscons 4
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or
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.Xr vt 4
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virtual terminal.
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.El
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.Sh SEE ALSO
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.Xr vidcontrol 1 ,
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.Xr syscons 4 ,
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.Xr vt 4
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 3.0 .
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