Debian ubuntu 清华源

Debian

sed -i 's#http://deb.debian.org#https://mirrors.ustc.edu.cn#g' /etc/apt/sources.list
sed -i 's|security.debian.org/debian-security|mirrors.ustc.edu.cn/debian-security|g' /etc/apt/sources.list

直接写入

echo "deb http://mirrors.ustc.edu.cn/debian bookworm main contrib non-free non-free-firmware" > /etc/apt/sources.list

ubuntu 18.04

sed -i s@/archive.ubuntu.com/@/mirrors.tuna.tsinghua.edu.cn/@g /etc/apt/sources.list