备份系统默认软件源

pi@raspberrypi:~ $ cd /etc/apt/

pi@raspberrypi:/etc/apt $ ls
apt.conf.d   listchanges.conf  sources.list      sources.list.d  trusted.gpg.d
auth.conf.d  preferences.d      trusted.gpg

pi@raspberrypi:/etc/apt $ sudo cp sources.list sources.list.bak

pi@raspberrypi:/etc/apt $ sudo cp sources.list.d/raspi.list sources.list.d/raspi.list.bak

更换阿里源

pi@raspberrypi:/etc/apt $ sudo vi sources.list
deb http://mirrors.aliyun.com/raspbian/raspbian/ buster main non-free contrib
deb-src http://mirrors.aliyun.com/raspbian/raspbian/ buster main non-free contrib

pi@raspberrypi:/etc/apt $ sudo vi sources.list.d/raspi.list
deb http://mirrors.aliyun.com/raspbian/raspbian/ buster main ui

更新软件源

pi@raspberrypi:/etc/apt $ sudo apt-get update && sudo apt-get upgrade -y

树莓派其他软件源

树莓派软件源大全