Getting Started with Linux (i) root password settings and user Switching

From this semester onwards, I will personally open a Linux topic learning includes common Linux commands, some common problems, and some of the learning experiences of C and C + + in Linux systems.

The following picture is the first time you install Ubuntu after setting up the root account password

(I set user name when installing GCC, computer ID name Gcc-huashuo)

The first step: Ctrl+alt+t Open the terminal, this time will appear [email protected]:~$, which is the normal user environment

Step two: Enter command sudo passwd enter

Step three: You will be prompted to enter the user password (note that this is the user name corresponding password when you install Ununtu, note that the input password in Ubuntu will not be displayed, enter to play direct return)

Fourth step: You will be prompted to enter a new UNIX password, in this line enter the password you want to set the root user

Fifth step: Repeat the new password, and then enter, if the passwd: the password has been successfully updated, then congratulations, successfully set the root account and password

After setting up the root account, I'm telling you the switch between the normal user and the root super user.

Normal user-"super root user"

There are three ways to switch to root user rights

Mode one: Enter Su-root carriage return

Follow the prompts to enter the root password return

See environment variable changed to [email protected] Computer name: ~# Switch successfully

Mode two: Enter SU return

Enter password return

Mode three: Enter sudo su carriage return

Enter password return

Super User--"ordinary user"

There are three different ways

Mode one: SU user name return

Way Two: Exit enter

Mode three: Shortcut key ctrl+d

Attach a picture (root and normal user switch login)

Getting Started with Linux (i) root password settings and user Switching