reserve a terminal
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.
The options are as follows:
- 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.
- Lock the terminal forever. This overrides
-tand is the default on OpenBSD unless
- 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.
- Unlock the terminal after timeout minutes unless
-nis also specified. When used in this manner
lockshould be invoked so that the user is safely logged out if the timeout elapses:
$ lock -t 15 || exit
lock command first appeared in