/usr/bin/systool: invalid option -- '-'
Usage: systool [<options> [device]]
	-a			Show attributes
	-b <bus_name>		Show a specific bus
	-c <class_name>		Show a specific class
	-d			Show only devices
	-h			Show usage
	-m <module_name>	Show a specific module
	-p			Show path to device/driver
	-v			Show all attributes with values
	-A <attribute_name>	Show attribute value
	-D			Show only drivers
	-P			Show device's parent