apt-get 阿里镜像

查看自己的系统
uname -a
cat /proc/version

修改
sudo vi /etc/apt/sources.list
deb http://mirrors.aliyun.com/raspbian/raspbian/ stretch main non-free contrib
deb-src http://mirrors.aliyun.com/raspbian/raspbian/ stretch main non-free contrib

更新
sudo apt-get update