rfkill: rfkill (A tool to query the state of RF kill switches)
rfkill: 
rfkill: The rfkill subsystem provides a generic interface to disabling any
rfkill: radio transmitter in the system. When a transmitter is blocked, it
rfkill: shall not radiate any power.
rfkill: 
rfkill: The subsystem also provides the ability to react on button presses and
rfkill: disable all transmitters of a certain type (or all). This is intended
rfkill: for situations where transmitters need to be turned off, for example
rfkill: on aircraft.
rfkill: