查看apt-get配置文件
cat /etc/apt/sources.list源文件备份
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak清空配置文件
echo "" > /etc/apt/sources.list配置阿里云镜像文件
echo "deb http://mirrors.aliyun.com/debian buster main" >> /etc/apt/sources.list ; echo "deb http://mirrors.aliyun.com/debian-security buster/updates main" >> /etc/apt/sources.list ; echo "deb http://mirrors.aliyun.com/debian buster-updates main" >> /etc/apt/sources.list ;更新软件包列表
sudo apt-get update
