前言
树莓派目前最新为debian12系统，网上有很多旧的换源方式，随着系统更新不一定有效
流程
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup备份旧的数据
sudo nano /etc/apt/sources.list
编辑sources.list文件
deb http://mirrors.aliyun.com/debian/ bookworm main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ bookworm main non-free contribdeb http://mirrors.aliyun.com/debian-security bookworm-security main
deb-src http://mirrors.aliyun.com/debian-security bookworm-security maindeb http://mirrors.aliyun.com/debian/ bookworm-updates main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ bookworm-updates main non-free contrib
把原有的信息都#号注释，添加如上的信息
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