Tools to Determine and Set CPUfreq Settings
To make access to the Linux kernel cpufreq subsystem easier for users
and cpufreq userspace tools, the cpufrequtils package was created. It
contains a library used by other programs (libcpufreq), command line
tools to determine current CPUfreq settings and to modify them
(cpufreq-info and cpufreq-set), and debug tools.