LOCK(1) BSD General Commands Manual LOCK(1)NAMElock — reserve a terminal
SYNOPSISlock [-npv] [-t timeout]
The lock utility 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 someone with the appropriate permission.
The following options are available:
-n Do not use a timeout value. Terminal will be locked forever.
-p A password is not requested, instead the user's current login
password is used.
The time limit (default 15 minutes) is changed to timeout min‐
-v Disable switching virtual terminals while this terminal is
locked. This option is implemented in a way similar to the -S
option of vidcontrol(1), and thus has the same restrictions. It
is only available if the terminal in question is a syscons(4)
SEE ALSOvidcontrol(1), syscons(4)HISTORY
The lock command appeared in 3.0BSD.
BSD July 10, 2002 BSD