VMware下载地址
阿里镜像网站下载ubuntu20.04：Ubuntu20.04.4下载地址
清华镜像网站下载ubuntu20.04：Ubuntu20.04.4下载地址
注：（1）电脑分辨率高的话，安装完ubuntu界面字体很小，看起来很费力
可以在应用总搜索“Displays”调节缩放比例
（2）通过设置共享文件夹实现虚拟机和主机间的文件共享
首先安装vim编辑器
sudo apt-get install vim
在文件/etc/apt/sources.list中备份默认的镜像源
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak
用vim打开 /etc/apt/sources.list
sudo vim /etc/apt/sources.list
将内容替换为阿里镜像
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
在vim中退出编辑并保存是esc+:wq+enter
替换完之后更新
sudo apt-get update sudo apt-get upgrade（7）安装QT5前准备工作
首先安装gcc和g++（可以用-v判断是否安装，如gcc -v）
sudo apt-get install gcc sudo apt-get install g++
安装clang编译器和clang++（判断是否装好了clang++，clang++ -v）
sudo apt install clang sudo apt install clang++
安装make、make-guile、cmake
sudo apt install make sudo apt install make-guile sudo snap install cmake --classic（8）安装QT5
安装QT5组件
sudo apt-get install build-essential
安装qt的开发工具
sudo apt-get install qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools
安装qtcreator
sudo apt-get install qtcreator
安装qt5
sudo apt-get install qt5*
