Select command help with blank input value Post: 302839191

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LEARN ABOUT DEBIAN

vlock-main

VLOCK-MAIN(8)						     Linux Programmer's Manual						     VLOCK-MAIN(8)

NAME

       vlock-main - lock current virtual console

SYNOPSIS

       vlock-main [plugins...]

DESCRIPTION

       vlock-main is part of vlock(1), the Virtual Console locking program for Linux.  It locks the current session and will only exit if the cur-
       rent user can authenticate themselves.  The root user will also be able to unlock the session, unless disabled at compile time.	 The  com-
       mand line arguments specify plugins that should be loaded by vlock-main.  See vlock-plugins(5) for more information.

       If plugin support is disabled at compile time, the only supported argument is "all".

ENVIRONMENT VARIABLES

       The following environment variables can be used to change the behavior of vlock-main:

       USER

	      If  this	variable is when vlock-main is run as root (uid 0) vlock locks the screen as this user instead of root.  The root password
	      will still be able to unlock the session, unless disabled at compile time.

       VLOCK_ALL_MESSAGE

	      If this variable is set and all consoles are locked its contents will be used as the locking message instead of the default message.

       VLOCK_CURRENT_MESSAGE

	      If this variable is set and only the current consoles is locked its contents will be used as the	locking  message  instead  of  the
	      default message.

       VLOCK_MESSAGE

	      If  this	variable  is  set  its contents will be used as the locking message instead of the default.  This overrides the former two
	      variables.

       VLOCK_TIMEOUT

	      Set this variable to specify the timeout (in seconds) after which the screen saver plugins (if any) will be invoked.  If this  vari-
	      able is unset or set to an invalid value or 0 no timeout is used.  See vlock-plugins(5) for more information about plugins.

       VLOCK_PROMPT_TIMEOUT

	      Set  this  variable to specify the amount of time (in seconds) you will have to enter your password at the password prompt.  If this
	      variable is unset or set to an invalid value or 0 no timeout is used.  Warning: If this value is too low, you may  not  be  able	to
	      unlock your session.

SIGNALS

       Several signals are ignored.  vlock-main will try to exit cleanly if SIGTERM is received.

SEE ALSO

       vlock(1), vlock-plugins(5)

AUTHORS

       Frank Benkstein <frank-vlock@benkstein.net>

Linux								   28 July 2007 						     VLOCK-MAIN(8)