https://blog.csdn.net/tengjingmeicai/article/details/80280562
deb https://mirrors.aliyun.com/raspbian/raspbian/ jessie main contrib non-free rpi
deb-src https://mirrors.aliyun.com/raspbian/raspbian/ jessie main contrib non-free rpi
https://blog.csdn.net/huakaitingqian/article/details/71513946
需要修改的地方有两处
/etc/apt/sources.list
/etc/apt/sources.list.d/raspi.list