1. install
https://blog.csdn.net/c406495762/article/details/70786700
2. 软件源更新
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak #为防止误操作后无法恢复，先备份原文件sources.list
gedit /etc/lib/apt/sources.list #打开sources.list，将原来的内容使用”#”符号全部注释掉，然后在文件结尾出添加中国科学技术大学或清华的源
清华源：
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial main universe restricted deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu-ports/ xenial main universe restricted
科大的源：
deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-updates main restricted universe multiverse deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-security main restricted universe multiverse deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial-backports main restricted universe multiverse deb http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main universe restricted deb-src http://mirrors.ustc.edu.cn/ubuntu-ports/ xenial main universe restricted