Debian 12默认官方源sources.list
备份现有apt源配置 mv /etc/apt/sources.list /etc/apt/sources.list.old 替换为默认官方源 cat > /etc/apt/sources.list << EOF deb https://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware deb-src https://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware deb https://deb.debian.org/debian/ bookworm-updates main contrib non-free non-free-firmwar…