debian12版本换源

sudo sed -i 's|http://deb.debian.org/debian|http://mirrors.tuna.tsinghua.edu.cn/debian|g' /etc/apt/sources.list && sudo sed -i 's|http://deb.debian.org/debian-security|http://mirrors.tuna.tsinghua.edu.cn/debian-security|g' /etc/apt/sources.list && sudo sed -i 's|http://deb.debian.org/debian|http://mirrors.tuna.tsinghua.edu.cn/debian|g' /etc/apt/sources.list
sudo apt update && sudo apt upgrade -y

查网线接电脑的树莓派ip

arp -a