1.\" $NetBSD: lock.1,v 1.9 2003/08/07 11:14:22 agc Exp $ 2.\" 3.\" Copyright (c) 1987, 1990, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)lock.1 8.1 (Berkeley) 6/6/93 31.\" 32.Dd June 6, 1993 33.Dt LOCK 1 34.Os 35.Sh NAME 36.Nm lock 37.Nd reserve a terminal 38.Sh SYNOPSIS 39.Nm 40.Op Fl np 41.Op Fl t Ar timeout 42.Sh DESCRIPTION 43.Nm 44requests a password from the user, reads it again for verification 45and then will normally not relinquish the terminal until the password is 46repeated. 47There are two other conditions under which it will terminate: it 48will timeout after some interval of time and it may be killed by someone 49with the appropriate permission. 50.Pp 51Options: 52.Pp 53.Bl -tag -width Fl 54.It Fl n 55No timeout is used. 56The terminal will be locked indefinitely or until current challenge is met. 57.It Fl p 58A password is not requested, instead the user's current login password 59is used. 60If the user has an S/Key key, they may also use it 61to unlock the terminal. 62To do this the user should enter "s/key" at the unlock "Key:" prompt. 63The user will then be issued an S/Key challenge to which they may respond 64with a six-word S/Key one-time password. 65.It Fl t Ar timeout 66The time limit (default 15 minutes) is changed to 67.Ar timeout 68minutes. 69.El 70.Sh SEE ALSO 71.Xr skey 1 72.Sh HISTORY 73The 74.Nm 75command appeared in 76.Bx 3.0 . 77