树莓派镜像源

$ sudo nano /etc/apt/sources.list



deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi
deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi


deb http://mirrors.neusoft.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi
deb-src http://mirrors.neusoft.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi