1.\" $NetBSD: lock.1,v 1.8 2002/09/26 01:11:33 wiz 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. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)lock.1 8.1 (Berkeley) 6/6/93 35.\" 36.Dd June 6, 1993 37.Dt LOCK 1 38.Os 39.Sh NAME 40.Nm lock 41.Nd reserve a terminal 42.Sh SYNOPSIS 43.Nm 44.Op Fl np 45.Op Fl t Ar timeout 46.Sh DESCRIPTION 47.Nm 48requests a password from the user, reads it again for verification 49and then will normally not relinquish the terminal until the password is 50repeated. 51There are two other conditions under which it will terminate: it 52will timeout after some interval of time and it may be killed by someone 53with the appropriate permission. 54.Pp 55Options: 56.Pp 57.Bl -tag -width Fl 58.It Fl n 59No timeout is used. 60The terminal will be locked indefinitely or until current challenge is met. 61.It Fl p 62A password is not requested, instead the user's current login password 63is used. 64If the user has an S/Key key, they may also use it 65to unlock the terminal. 66To do this the user should enter "s/key" at the unlock "Key:" prompt. 67The user will then be issued an S/Key challenge to which they may respond 68with a six-word S/Key one-time password. 69.It Fl t Ar timeout 70The time limit (default 15 minutes) is changed to 71.Ar timeout 72minutes. 73.El 74.Sh SEE ALSO 75.Xr skey 1 76.Sh HISTORY 77The 78.Nm 79command appeared in 80.Bx 3.0 . 81