给debian 10/Debian 11系统更换国内源

先备份原本的源list

sudo cp /etc/apt/sources.list /etc/apt/sources.list_bak

用sed命令将 /etc/apt/sources.list 文件中 Debian 默认的源地址 http://deb.debian.org/ 替换为国内源即可

#中国科技大学
sudo sed -i 's/deb.debian.org/mirrors.ustc.edu.cn/g' /etc/apt/sources.list
#网易云163
sudo sed -i 's/deb.debian.org/mirrors.163.com/g' /etc/apt/sources.list
#阿里云
sudo sed -i 's/deb.debian.org/mirrors.aliyun.com/g' /etc/apt/sources.list
#清华同方
sudo sed -i 's/deb.debian.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apt/sources.list

更新索引以生效

sudo apt-get update