#Function to toggle wireless interfaces originaly created by Paul Sladen for Ubuntu acpi-support package
for DEVICE in /sys/class/net/* ; do
	if [ -d $DEVICE/wireless ] ; then
	    # $DEVICE is a wireless device.

	    FOUND=
	    # Yes, that's right... the new interface reverses the truth values.
	    ON=1
	    OFF=0
	    for CONTROL in $DEVICE/device/rfkill/rfkill*/state; do
		if [ -w "$CONTROL" ]; then
		    FOUND=1

		    if [ "$(cat "$CONTROL")" = "$ON" ] ; then
			# It's powered on. Switch it off.
			echo -n "$OFF" > "$CONTROL"
		    else
			# It's powered off. Switch it on.
			echo -n "$ON" > "$CONTROL"
		    fi
		fi
	    done
	    # it might be safe to assume that a device only supports one
	    # interface at a time; but just in case, we short-circuit
	    # here to avoid toggling the power twice
	    if [ -n "$FOUND" ]; then
		continue
	    fi

	    ON=0
	    OFF=1  # 1 for rf_kill, 2 for power/state
	    for CONTROL in $DEVICE/device/rf_kill $DEVICE/device/power/state ; do
		if [ -w $CONTROL ] ; then
		    # We have a way of controlling the device, lets try
		    if [ "`cat $CONTROL`" = 0 ] ; then
			# It's powered on. Switch it off.
			if echo -n $OFF > $CONTROL ; then 
			    break
			else
			    OFF=2 # for power/state, second time around
			fi
		    else
			# It's powered off. Switch it on.
			if echo -n $ON > $CONTROL ; then
			    break
			fi
		    fi
		fi
	    done
	fi
   done