Ubuntu 16.04卸载一些不必要的预装软件

卸载办公软件
sudo apt-get remove libreoffice-common

卸载Amazon
sudo apt-get remove unity-webapps-common

查看安装的包：
dpkg -l xxx

sudo apt-get remove docker docker-engine docker-ce docker.io
sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
curl -fsSL https://mirrors.aliyun.com/docker-ce/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository “deb [arch=amd64] https://mirrors.aliyun.com/docker-ce/linux/ubuntu $(lsb_release -cs) stable”
sudo apt-get update
sudo apt-get install -y docker-ce