0.以ubuntu16.04位列
如要用于其他版本，把 xenial 换成其他版本代号即可: 18.04：bionic；17.10：artful；16.04：xenial；14.04：trusty。
1.安装vim ,
sudo apt install vim
2.修改source.list
sudo vim /etc/apt/source.list
替换为
# 默认注释了源码仓库，如有需要可自行取消注释 deb https://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse # deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse # deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse # deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse deb https://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse # deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial-security main restricted universe multiverse # 预发布软件源，不建议启用 # deb https://mirrors.ustc.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse # deb-src https://mirrors.ustc.edu.cn/ubuntu/ xenial-proposed main restricted universe multiverse
然后,更新
sudo apt-get update
文章参考
https://mirrors.ustc.edu.cn/help/ubuntu.html