Debian11升级Debian12

先更新系统包到最新

apt update

apt full-upgrade

apt --purge autoremove

重启系统

reboot

更新 sources.list

cp -v /etc/apt/sources.list /opt/sources.list-bakup-debian11

更新debian12包数据

apt update

升级Debian12

apt full-upgrade

按需选择然后重启

reboot

重启后验证

 lsb_release -a

cat /etc/os-release

确认升级无误后删除旧包

apt --purge autoremove