How to enter root privileges in linux

The default root user of the system under Linux is not enabled. This is exactly the opposite of what MS Windows does. Windows XP will create an automatic login administrator user for you after installing the system. However, Linux does not The same point also greatly increases the security of the system, but at the same time it has some special requirements for our operation. Let's talk about how to enter root permissions in Linux

It is recommended to use root user privileges only when you want to modify system settings or install software.

1. Enable the root account

For desktop operating systems like Ubuntu, the root user is not enabled by default, that is, you cannot boot as the root user. Log in, enable the root user and set a password. Pay special attention to the fact that you can use the root permissions of other administrators without enabling the root account. Enabling the root account will increase the insecurity of the system.

Operation method:

Enter sudo passwd root in the terminal (i.e. change the root password), press Enter, and follow the prompts

2. Temporary in the terminal Use root authority

Directly enter sudo command you want to execute, and enter the current user password according to the prompts

3. Open a terminal with root authority

Directly enter sudo su [Note: not su]

Enter the password of the root user when the terminal prompts for a password

4. Of course, if you have special requirements, you must let root When the user logs in to the computer, of course I didn’t say anything. Go to System->Administration->Login System and open Security. (Security) tab, select Allow local administrator login (allow local system administrator to log in), so that you can enter the root user password to log in to the computer next time you turn on the computer.

5. For some important operations under graphics , such as installing software and modifying important system files, you need root permissions. You will be prompted to enter your password. Note that only root permissions are used at this time, not to log in as the root user.

When you enter the password in the terminal, the entered characters will not be displayed, and you will not see any reaction on the screen. This is normal and is for security reasons.

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