vi /etc/apt/sources.list阿里云源deb http://mirrors.aliyun.com/debian/ buster main non-free contrib
deb-src http://mirrors.aliyun.com/debian/ buster main non-free contrib
deb http://mirrors.aliyun.com/d...
换源vi /etc/apt/sources.listdeb https://mirrors.ustc.edu.cn/debian stretch main contrib non-free
deb https://mirrors.ustc.edu.cn/debian stretch-updates main contrib non-free
deb https://mirrors.ustc....