BBox2 TV switcher

Purpose     Switch on or off TV plugs 3 and 4.

Warning     This script is provided with no warranty. It has been tested
            and is functionnal on a Belgacom BBox2.

Syntax      tv-switch.pl status # returns the status of plugs
            tv-switch.pl [on|off] # set the status of both plugs
            tv-switch.pl [on|off] [on|off] # set the sattus of plug 3
            and plug 4