sudo apt update sudo apt install vim sudo vim /etc/apt/sources.list
# 中科大镜像源 deb http://mirrors.ustc.edu.cn/debian bullseye main non-free contrib deb http://mirrors.ustc.edu.cn/debian bullseye-updates main non-free contrib deb http://mirrors.ustc.edu.cn/debian bullseye-proposed-updates main non-free contrib deb http://mirrors.ustc.edu.cn/debian bullseye-backports main non-free contrib deb http://mirrors.ustc.edu.cn/debian bullseye-backports-sloppy main non-free contrib deb-src http://mirrors.ustc.edu.cn/debian bullseye main non-free contrib deb-src http://mirrors.ustc.edu.cn/debian bullseye-updates main non-free contrib deb-src http://mirrors.ustc.edu.cn/debian bullseye-proposed-updates main non-free contrib deb-src http://mirrors.ustc.edu.cn/debian bullseye-backports main non-free contrib deb-src http://mirrors.ustc.edu.cn/debian bullseye-backports-sloppy main non-free contrib # 中科大安全更新镜像源 deb http://mirrors.ustc.edu.cn/debian-security bullseye-security main non-free contrib deb-src http://mirrors.ustc.edu.cn/debian-security bullseye-security main non-free contrib
