LOCK(1) — HP-UX
NAME
lock − reserve a terminal
SYNOPSIS
lock
DESCRIPTION
Lock requests a password from the user, then prints "This terminal is locked -- do not disturb" on the terminal and refuses to relinquish the terminal until the password is repeated. If the user forgets the password, he has no other recourse but to login elsewhere and kill the lock process.
BUGS
Should timeout after 15 minutes.
Hewlett-Packard Company — Version B.1, May 11, 2021