Ubuntu远程桌面，类似于qq远程桌面（Ubuntu没有内置桌面系统吗？）
$ sudo apt-get update $ sudo apt-get install x11vnc
$ x11vnc -storepasswd
Enter VNC password: ********* Verify password: ********* Write password to /root/.vnc/passwd? [y]/n y Password written to: /root/.vnc/passwd
x11vnc -auth guess -once -loop -noxdamage -repeat -rfbauth /root/.vnc/passwd -rfbport 5900 -shared
ubuntu16.4中开启vncserver进行远程桌面：https://www.cnblogs.com/zhaopengcheng/p/6017855.html (111)
vncViewer
如果安装了x11/xrdp/gnome/kde，如果指定哪一个桌面系统：https://blog.csdn.net/wonengguwozai/article/details/51513890
Linux安全等级设置（securitylevel)：https://www.cnblogs.com/zxj015/p/4457868.html (/etc/sysconfig/system-config-securitylevel )
https://zhidao.baidu.com/question/406495809.html
http://www.169it.com/tech-qa-linux/article-11941332775654497555.html
linux系统的7种运行级别 https://www.cnblogs.com/acSzz/p/5435194.html
登陆：root 密码：管理员密码
