简单快速将debian11升级到debian12

有些vps/云服务器/独立服务器拿到之后默认还是给的debian11系统，而且还不提供debian12；虽然说用也不是不可以，但是为了安全或者又喜欢追新的话还是升级一下到debian12比较好。这里简单介绍下快速将debian11升级到debian12的方法，如果有数据的话记得提前备份好，避免出现不必要的损失。

默认操作：

apt update && apt upgrade

接下来，完成后复制下面代码，粘贴输入进去：

cat > /etc/apt/sources.list << EOF
deb https://mirrors.huaweicloud.com/debian/ bookworm main non-free non-free-firmware contrib
deb-src https://mirrors.huaweicloud.com/debian/ bookworm main non-free non-free-firmware contrib
deb https://mirrors.huaweicloud.com/debian-security/ bookworm-security main
deb-src https://mirrors.huaweicloud.com/debian-security/ bookworm-security main
deb https://mirrors.huaweicloud.com/debian/ bookworm-updates main non-free non-free-firmware contrib
deb-src https://mirrors.huaweicloud.com/debian/ bookworm-updates main non-free non-free-firmware contrib
deb https://mirrors.huaweicloud.com/debian/ bookworm-backports main non-free non-free-firmware contrib
deb-src https://mirrors.huaweicloud.com/debian/ bookworm-backports main non-free non-free-firmware contrib
EOF
或者
cat > /etc/apt/sources.list << EOF
deb http://mirrors.linode.com/debian/ bookworm main non-free non-free-firmware contrib
deb-src http://mirrors.linode.com/debian/ bookworm main non-free non-free-firmware contrib
deb http://mirrors.linode.com/debian-security/ bookworm-security main
deb-src http://mirrors.linode.com/debian-security/ bookworm-security main
deb http://mirrors.linode.com/debian/ bookworm-updates main non-free non-free-firmware contrib
deb-src http://mirrors.linode.com/debian/ bookworm-updates main non-free non-free-firmware contrib
deb http://mirrors.linode.com/debian/ bookworm-backports main non-free non-free-firmware contrib
deb-src http://mirrors.linode.com/debian/ bookworm-backports main non-free non-free-firmware contrib
EOF