LOCKSCREEN(1) — USER COMMANDS
NAME
lockscreen − maintain window context until “login”
SYNOPSIS
lockscreen [ −e ] [ −r ]
DESCRIPTION
Lockscreen maintains the user’s window setup and context. The user does not need to log out from the machine. When run with the machine not in use, the black lockscreen display and constantly moving Sun Microsystems logo limit phosphorus burn of the video display that may occur from running the same window configuration for a long time.
Lockscreen should be executed from a terminal emulator running inside the SunWindows system. The window described by the environment parameter WINDOW_PARENT (such as, /dev/win0) is covered and obscured by black. This window is typically the entire screen. When any keyboard or mouse button is pressed, the black screen is replaced by an option and message subwindow. The message subwindow (the top subwindow) prompts the user to fill in the Name and Password text items in the option subwindow (the bottom subwindow). See suntools(1) for a general description of interacting with option subwindows. Only root and the user name that invoked lockscreen are acceptable names. Initially, the user name is filled in and the password is the text item to which typed characters are directed.
Once the name and password are entered, the user can use the mouse to choose the Show Desktop command item. If the name and password are valid, lockscreen terminates and reveals the windows under it.
At any time, the user can choose the Abort Login command item, which replaces the subwindows with the dark background and the logo.
Also, at any time, any user can choose the Exit Desktop command item, which is analogous to choosing the Exit menu item in the Root Manager menu of the suntools(1) program. The program from which suntools(1) executed is then in control of the machine. Notice that if suntools(1) was started from some program other than login(1), whoever is sitting at the terminal is now logged in as the person that started suntools(1). To prevent a breach of security, the −e command line switch can be given to lockscreen to suppress the display of the Exit Desktop command item.
OPTIONS
−e Add the display of the Exit Desktop command item. The default is no exit option.
−r Someone correctly logging in as root may invoke the Show Desktop command option. The default is that this feature is disabled.
SEE ALSO
Sun Release 1.1 — Last change: 13 March 1984