xref: /freebsd/usr.bin/lock/lock.1 (revision 52267f7411adcc76ede961420e08c0e42f42d415)
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32.\"	@(#)lock.1	8.1 (Berkeley) 6/6/93
33.\" $FreeBSD$
34.\"
35.Dd July 10, 2002
36.Dt LOCK 1
37.Os
38.Sh NAME
39.Nm lock
40.Nd reserve a terminal
41.Sh SYNOPSIS
42.Nm
43.Op Fl npv
44.Op Fl t Ar timeout
45.Sh DESCRIPTION
46The
47.Nm
48utility requests 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
55The following options are available:
56.Bl -tag -width indent
57.It Fl n
58Do not use a timeout value.
59Terminal will be locked forever.
60.It Fl p
61A password is not requested, instead the user's current login password
62is used.
63.It Fl t Ar timeout
64The time limit (default 15 minutes) is changed to
65.Ar timeout
66minutes.
67.It Fl v
68Disable switching virtual terminals while this terminal is locked.
69This option is implemented in a way similar to the
70.Fl S
71option of
72.Xr vidcontrol 1 ,
73and thus has the same restrictions.
74It is only available if the terminal in question is a
75.Xr syscons 4
76virtual terminal.
77.El
78.Sh SEE ALSO
79.Xr vidcontrol 1 ,
80.Xr syscons 4
81.Sh HISTORY
82The
83.Nm
84command appeared in
85.Bx 3.0 .
86