以下代码在shell里面执行后，然后执行apt -y update 中国大陆 cat <<EOF > /etc/apt/sources.list deb http://ftp.cn.debian.org/debian/ bullseye main non-free contrib deb-src http://ftp.cn.debian.org/debian/ bullseye main non-free contrib deb http://ftp.cn.debian.org/debian-se…