Ubuntu 16.04 System at the beginning of the installation is not able to switch to the root user, ordinary users need to use root permissions when you usually need to add "sudo" before executing the command, requires frequent use of root permissions of the partners may feel that this will make our egg classmate very sad ...
In fact, to solve the problem of egg classmate is very simple, as long as the root with a password to switch to the root user
sudo passwd Root
As follows
First, enter the current user's password, and then enter the root password you want to set after entering the new UNIX password, then you can switch to super user.
Su
In the pop-up prompt, enter the root password you just set to become the root user!
Of course, the root user under the operation will be risky, if the small partner you still small white classmate, please use the ordinary user for a period of time to say it
Hundreds plans to this year's system chapter "six"--ubuntu 16.04 open Root Super User