vtblank(1)

vtblank -- console screen saver

Synopsis

vtblank [-s seconds] [-m minutes] [-o on|off] [-v]

Description

The vtblank command is used to activate or deactivate the console screen saver by dynamically setting the TBLNK tunable, which specifies a time until the screen blanks.

Invoked without options, vtblank returns a message like the following:

   TBLNK = 40 seconds. The console-saver is enabled.

The options supported by vtblank are:

-s seconds: Sets TBLNK in seconds.
-m minutes: Sets TBLNK in minutes.
-o: Activates (-o on) or deactivates (-o off) the screen saver. Deactivating the saver does not affect the value of TBLNK.
-v: Verbose. Returns the number of seconds to which TBLNK has been set. A value of zero is returned when the featue is disabled.

The permissible range for TBLNK, in seconds, is 1-86400 (one day).

Setting TBLNK with the -s or -m options automatically overrides an earlier -o off.

References

vtwait(1)

Notice

This command is available only on systems using a VGA card.