Summary of how to add root permissions to users in Linux

1. Add a user . First, use the adduser command to add a common user. The command is 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. Grant root permissions

Method 1 : Modify the /etc/sudoers file, find the following line, and remove the comment (#) in front of it

## Allows people in group wheel to run all commands
%wheel ALL=(ALL) ALL

Then modify the user to belong to the root group (wheel), the command is as follows:

#usermod -g root tommy

The modification is complete. You can now log in with the tommy account and use the command su - to obtain root privileges to perform operations.

Method 2 : Modify the /etc/sudoers file, find the following line, and add a line below root as shown below:

## Allow root to run any commands anywhere
root ALL=(ALL) ALL
tommy ALL=(ALL) ALL

The modification is complete. You can now log in with the tommy account and use the command su - to obtain root privileges to perform operations.

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

After modification, it is as follows

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

Save, and log in with the tommy account to directly obtain the permissions of the root account.

Friendly reminder: Although method three seems simple and convenient, it is generally not recommended. Method two is recommended.

How to add root permissions to a user in Linux

## Allow root to run any commands anywhere

root ALL=(ALL) ALL

tommy ALL=(ALL) ALL

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

Then use the command su to obtain root privileges to perform operations.

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