系统环境

$ uname -anLinux raspberrypi 4.9.41-v7+ #1023 SMP Tue Aug 8 16:00:15 BST 2017 armv7l GNU/Linux

备份/etc/apt/sources.list

cp /etc/apt/sources.list  /etc/apt/sources.list.bak

修改 /etc/apt/sources.list 文件内容

#deb http://mirrordirector.raspbian.org/raspbian/ stretch main contrib non-free rpi# Uncomment line below then 'apt-get update' to enable 'apt-get source'#deb-src http://archive.raspbian.org/raspbian/ stretch main contrib non-free rpideb http://mirrors.aliyun.com/raspbian/raspbian stretch main contrib non-free rpideb-src http://mirrors.aliyun.com/raspbian/raspbian/ stretch main contrib non-free rpi

更新源

sudo apt-get update