The steps in this tutorial require the user to have root privileges
https://blog.csdn.net/oldguncm/article/details/78855000
https://blog.csdn.net/u012486840/article/details/52610320
https://blog.csdn.net/oldguncm/article/details/78855000
https://blog.csdn.net/u012486840/article/details/52610320