ubuntu 1804 禁止更新內核

vi /etc/apt/apt.conf.d/10periodic
修改前：

APT::Periodic::Update-Package-Lists "1"; ##1代表更新
APT::Periodic::Download-Upgradeable-Packages "0";
APT::Periodic::AutocleanInterval "0";
 

修改後：

APT::Periodic::Update-Package-Lists "0";##0代表關閉自動更新
APT::Periodic::Download-Upgradeable-Packages "0";
APT::Periodic::AutocleanInterval "0";