1、备份原有

cp /etc/apt/sources.list /etc/apt/sources.list.old

 

2、打开阿里巴巴镜像源：  https://opsx.alibaba.com/mirror，打开帮助找到

 

ubuntu 16.04 配置如下

deb http://mirrors.aliyun.com/ubuntu/ xenial maindeb-src http://mirrors.aliyun.com/ubuntu/ xenial maindeb http://mirrors.aliyun.com/ubuntu/ xenial-updates maindeb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates maindeb http://mirrors.aliyun.com/ubuntu/ xenial universedeb-src http://mirrors.aliyun.com/ubuntu/ xenial universedeb http://mirrors.aliyun.com/ubuntu/ xenial-updates universedeb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates universedeb http://mirrors.aliyun.com/ubuntu/ xenial-security maindeb-src http://mirrors.aliyun.com/ubuntu/ xenial-security maindeb http://mirrors.aliyun.com/ubuntu/ xenial-security universedeb-src http://mirrors.aliyun.com/ubuntu/ xenial-security universe

 

3、修改配置

vi /etc/apt/sources.list，删除原有配置内容，并将上面的找到的ubuntu16.04配置粘贴sources.list

结果如下：

4、sudo apt-get update更新镜像源