Debian镜像
修改sources.list
deb http://mirrors.ustc.edu.cn/debian/ bullseye main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian/ bullseye main contrib non-free
deb http://mirrors.ustc.edu.cn/debian/ bullseye-updates main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian/ bullseye-updates main contrib non-free
deb http://mirrors.ustc.edu.cn/debian/ bullseye-backports main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian/ bullseye-backports main contrib non-free
deb http://mirrors.ustc.edu.cn/debian-security/ bullseye-security main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian-security/ bullseye-security main contrib non-free
修改时区
1)sudo dpkg-reconfigure tzdata
2)timedatectl set-timezone Asia/Shanghai
3)echo Asia/Shanghai > /etc/timezone && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime