Switch from general user to root user in CentOS

--->http://www.centoscn.com/centos/help/2014/0624/3173.html

1. Open the terminal, the prompt is "$", indicating that the user is a normal user, at this time, the direct input Su, enter, entered the root password, return, you can switch to the root user, at this time the prompt changed to "#".

Note that the terminal is not displayed when you enter the password, and it is the process to switch to the root user each time.

2. Switch back to normal user, just enter "su user name" OK.

Switch from general user to root user in CentOS