IABSD.fr/src/usr.bin/lock/lock.1

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• Author : schwarze
  Date : 2019-07-24 20:23:09
  Hash : f6462fb5
  Message : Make sure that -n overrides -t even when -n precedes -t, like it does in FreeBSD and in NetBSD, and fully document that behaviour. Input, feedback, and OK jca@.

• usr.bin/lock/lock.1

• .\"	$OpenBSD: lock.1,v 1.20 2019/07/24 20:23:09 schwarze Exp $
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  .\"	@(#)lock.1	8.1 (Berkeley) 6/6/93
  .\"
  .Dd $Mdocdate: July 24 2019 $
  .Dt LOCK 1
  .Os
  .Sh NAME
  .Nm lock
  .Nd reserve a terminal
  .Sh SYNOPSIS
  .Nm lock
  .Op Fl np
  .Op Fl a Ar style
  .Op Fl t Ar timeout
  .Sh DESCRIPTION
  .Nm
  requests a password from the user, reads it again for verification
  and then will normally not relinquish the terminal until the password is
  repeated.
  .Pp
  The options are as follows:
  .Bl -tag -width Ds
  .It Fl a Ar style
  The specified
  .Bx
  Authentication login
  .Ar style
  (as specified in
  .Pa /etc/login.conf )
  will be used to authenticate the user.
  If the particular
  .Ar style
  requires a challenge/response handshake or a special prompt, the
  user may enter the name of the
  .Ar style
  to get the standard prompt for that
  .Ar style .
  .It Fl n
  Lock the terminal forever.
  This overrides
  .Fl t
  and is the default on
  .Ox
  unless
  .Fl t
  is specified.
  .It Fl p
  A password is not requested, instead the user's current login password
  is used.
  If the user has an S/Key key, they may also use it to unlock the terminal.
  To do this the user should enter
  .Qq s/key
  at the unlock
  .Dq Key:
  prompt.
  The user will then be issued an S/Key
  challenge to which they may respond with a six-word S/Key one-time
  password.
  .It Fl t Ar timeout
  Unlock the terminal after
  .Ar timeout
  minutes unless
  .Fl n
  is also specified.
  When used in this manner
  .Nm
  should be invoked so that the user is safely logged out
  if the timeout elapses:
  .Pp
  .Dl $ lock -t 15 || exit
  .El
  .Sh SEE ALSO
  .Xr skey 1 ,
  .Xr login.conf 5
  .Sh HISTORY
  The
  .Nm
  command first appeared in
  .Bx 2 .
  .Sh AUTHORS
  .An Kurt Shoens .