osf1 man page for lock

lock(1) 						      General Commands Manual							   lock(1)

NAME
       lock - Requests and verifies a user password

SYNOPSIS
       lock [-number]

       The lock command requests and reads a password from a user, then requests the password a second time to verify it.

OPTIONS
       Sets the time-out period to number minutes. The default value is 15 minutes.

DESCRIPTION
       The  lock  command  then  locks	the  terminal and does not relinquish it until the password is received again, unless one of the following
       occurs: The root password is entered.  The time-out interval is exceeded.  The command is killed by a user with appropriate permission.

       The time-out default value is 15 minutes, but this can be changed with the -number option.

EXAMPLES
       To lock a terminal, enter: lock

	      The password is requested twice, with two different prompts, so the system can verify it. If the password is not repeated within	15
	      minutes, the command times out.  To lock a terminal for 10 minutes instead of 15, enter: lock -10

SEE ALSO
       Commands:  passwd(1)

																	   lock(1)