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nano /etc/apt/sources.list
# 默认仓库
deb http://ftp.kr.debian.org/debian/ bookworm main contrib non-free non-free-firmware
deb-src http://ftp.kr.debian.org/debian/ bookworm main contrib non-free non-free-firmware
# 安全更新
deb http://security.debian.org/debian-security bookworm-security main contrib non-free non-free-firmware
deb-src http://security.debian.org/debian-security bookworm-security main contrib non-free non-free-firmware
# 最新更新（backports）deb http://ftp.kr.debian.org/debian/ bookworm-updates main contrib non-free non-free-firmware
deb-src http://ftp.kr.debian.org/debian/ bookworm-updates main contrib non-free non-free-firmware
# 更新系统软件包
apt update & apt upgrade -y正文完
