LOCK(1) BSD Reference Manual LOCK(1)NAME
lock, lock-np - reserve a terminal
SYNOPSISlock [-np] [-a style] [-t timeout]
lock-np [-a style] [-t timeout]
DESCRIPTIONlock 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.
If lock-np is called, it will behave like lock with -np specified. This
modus operandi is intended for use with GNU screen.
The options are as follows:
-a style
The specified BSD Authentication login style (as specified in
/etc/login.conf) will be used to authenticate the user. If the
particular style requires a challenge/response handshake or a
special prompt, the user may enter the name of the style to get
the standard prompt for that style.
-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 also 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 ALSOskey(1), login.conf(5)HISTORY
The lock command appeared in 3.0BSD.
MirOS BSD #10-current June 6, 1993 1
