# cpupower
```bash
sudo apt-get install linux-tools-$(uname -r)      # to install
```
## Info
```bash
cpupower -c 0,1,2,3 frequency-info
cpupower -c 0,1,2,3 frequency-info | grep CPU.*Hz    # show current freq
```

## Setting

#### powersave
```bash
#!/bin/bash
sudo cpupower frequency-set -d 800 -g powersave
```

#### performance
```bash
#!/bin/bash
sudo cpupower frequency-set -d 800 -g performance
```

#### ondemand
```bash
#!/bin/bash
sudo cpupower frequency-set -d 800 -g ondemand
```