ubuntu 20.04安装桌面并远程连接

参考：
https://www.zmy6.com/archives/234
https://blog.csdn.net/weixin_42068573/article/details/131227544
https://blog.csdn.net/LoongEmbedded/article/details/132434219

  sudo apt install ubuntu-desktopsudo apt install xrdpsudo systemctl status xrdpprintf "export GNOME_SHELL_SESSION_MODE=ubuntu\nexport XDG_CURRENT_DESKTOP=ubuntu:GNOME\nexport XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu:/etc/xdg\n" > ~/.xsessionrc