Shulou(Shulou.com)06/02 Report--

1. To add a user, first add a normal user with the adduser command as follows:

# adduser tommy

/ / add a user named tommy

# passwd tommy / / change password

Changing password for user tommy.

New UNIX password: / / enter the new password here

Retype new UNIX password: / / enter the new password again

Passwd: all authentication tokens updated successfully.

2. Give root permission

Method 1: modify the / etc/sudoers file, find the following line, and remove the previous comment (#)

# # Allows people in group wheel to run all commands

% wheel ALL= (ALL) ALL

Then modify the user to belong to the root group (wheel), with the following command:

# usermod-g root tommy

After the modification, you can now log in with your tommy account, and then use the command su-to get root permission to operate.

Method 2: modify the / etc/sudoers file, find the following line, and add a line under root, as follows:

# # Allow root to run any commands anywhere

Root ALL= (ALL) ALL

Tommy ALL= (ALL) ALL

After the modification, you can now log in with your tommy account, and then use the command su-to get root permission to operate.

Method 3: modify the / etc/passwd file, find the following line, and change the user ID to 0, as shown below:

Tommy:x:500:500:tommy:/home/tommy:/bin/bash

The modification is as follows

Tommy:x:0:500:tommy:/home/tommy:/bin/bash

Save, after logging in with a tommy account, you will directly obtain the permissions of the root account.

Friendly reminder: although method 3 looks simple and convenient, it is generally not recommended. Method 2 is recommended.

How to add root permissions for users by linux

# # Allow root to run any commands anywhere

Root ALL= (ALL) ALL

Tommy ALL= (ALL) ALL

After the modification, you can now log in with your tommy account.

Then use the command su, you can get root permission to operate.

These are all the relevant knowledge points of this introduction. Thank you for your study and support.

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