LOCK(1)                    OpenBSD Reference Manual                    LOCK(1)

NAME
     lock - reserve a terminal

SYNOPSIS
     lock [-n] [-p] [-t timeout]

DESCRIPTION
     lock requests a password from the user, reads it again for verification
     and then will normally not relinquish the terminal until the password is
     repeated.  There are two other conditions under which it will terminate:
     it will timeout after some interval of time and it may be killed by some-
     one with the appropriate privileges.

     The options are as follows:

     -n          Don't use a timeout value.  Terminal will be locked forever.

     -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 al-
                 so use it to unlock the terminal.  To do this the user should
                 enter "s/key" at the unlock ``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.

     -t timeout  The time limit (default 15 minutes) is changed to timeout
                 minutes.

SEE ALSO
     skey(1)

HISTORY
     The lock command appeared in 3.0BSD.

OpenBSD 2.8                      June 6, 1993                                1
