cpupower

apt install linux-cpupower

# cpupower 
 
Usage:	cpupower [-c|--cpu cpulist ] <command> [<args>]
Supported commands are:
	frequency-info
	frequency-set
	idle-info
	idle-set
	powercap-info
	set
	info
	monitor
	help
 
Not all commands can make use of the -c cpulist option.
 
Use 'cpupower help <command>' for getting help for above commands.