1.备份
sudo mv /etc/apt/sources.list /etc/apt/sources.list.bak
2.编辑源
sudo vim /etc/apt/sources.list
vim内容为
deb http://mirrors.aliyun.com/debian/ buster main non-free contrib deb http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib deb http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib deb http://mirrors.aliyun.com/debian-security/ buster/updates main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster-updates main non-free contrib deb-src http://mirrors.aliyun.com/debian/ buster-backports main non-free contrib deb-src http://mirrors.aliyun.com/debian-security/ buster/updates main non-free contrib
3.更新
sudo apt-get update sudo apt-get upgrade
参考资料
https://segmentfault.com/a/1190000024419040
标签：non,http,mirrors,更新,如何,contrib,main,com,Debian From： https://www.cnblogs.com/liqi175/p/16788629.html