树莓派更换阿里云镜像源

sudo nano /etc/apt/sources.list

#将原有内容用#注释掉
deb http://mirrors.aliyun.com/raspbian/raspbian/ buster main contrib non-free rpi
deb-src http://mirrors.aliyun.com/raspbian/raspbian/ buster main contrib non-free rpi

sudo nano /etc/apt/sources.list.d/raspi.list

#将原有内容用#注释掉
deb http://mirrors.aliyun.com/raspbian/raspbian/ buster main
deb-src http://mirrors.aliyun.com/raspbian/raspbian/ buster main

sudo apt-get update
sudo apt-get upgrade

来源：https://www.cnblogs.com/wml1994/p/11667101.html