Raspberry PiでSwapをOn/Off

1.使用量はこれで見れる

>free -h

2.以下で無効化(sudoを付けて実行)

> sudo swapoff --all
> sudo systemctl stop dphys-swapfile
> sudo systemctl disable dphys-swapfile
> systemctl status dphys-swapfile

3.戻すときは、上を逆に

> sudo systemctl start dphys-swapfile
> sudo systemctl enable dphys-swapfile
> systemctl status dphys-swapfile