一、安装
下载地址：中科大源 http://mirrors.ustc.edu.cn/ubuntu-releases/20.04.4/
安装步骤：https://blog.csdn.net/qq_44870331/article/details/123768010
二、使用准备
配置源：
-
备份源：
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak -
修改源：
sudo vi /etc/apt/sources.list清空填入以下内容deb http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ focal-backports main restricted universe multiverse -
更新源：
sudo apt update -
安装工具：
sudo apt install net-tools -
查看网络：
ifconfig -a -
缓存与垃圾清理 详情查看
sudo apt-get autoclean清理旧版本的软件缓存
sudo apt-get clean清理所有软件缓存
sudo apt-get autoremove删除系统不再使用的孤立软件
三、安装开发工具
-
安装Anaconda
教程与使用，下载：https://mirrors.tuna.tsinghua.edu.cn/help/anaconda/
一路默认安装或者yes安装完成，激活Anaconda 使用source ~/.bashrc -
安装依赖：
sudo apt-get install python3-dev
sudo apt-get install gcc