1. 安装Virtualbox
2. 下载发行版：https://mirrors.tuna.tsinghua.edu.cn/ubuntu-cdimage/ubuntu/releases/
3. 安装Ubuntu(下一步下一步即可）
4. 安装增强功能，reboot一下。
5. 更换ubuntu源：
a. 备份sources.list 找到：/etc/apt/下的sources.list
b. sudo vi /etc/apt/sources.list
c. 更换科大源
deb https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiversedeb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic main restricted universe multiversedeb https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiversedeb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-updates main restricted universe multiversedeb https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiversedeb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-backports main restricted universe multiversedeb https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiversedeb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-security main restricted universe multiversedeb https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiversedeb-src https://mirrors.ustc.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
6. 删除预装
apt-get remove thunderbird totem rhythmbox empathy brasero simple-scan gnome-mahjongg aisleriot gnome-mines cheese transmission-common gnome-orca webbrowser-app gnome-sudoku landscape-client-ui-install libreoffice-common
7. 设置共享文件夹权限：
sudo adduser ljguo vboxsf
8. root账户
sudo passwd root
设置root账户
su - root命令，进入root
9. 安装VASP
按照这个：https://blog.csdn.net/qq_16128855/article/details/117908050，最重要的一步是在以root用户编译那个文件。
先sudo apt-get install build-essential，把gcc安装了
