How to add a user and grant root permissions in Linux?
How to add a user under Linux and grant root permissions:
1. To add a user, first use the adduser command to add an ordinary user, the command As follows:
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2. Grant root permissions
Method 1:Modify the /etc/sudoers file, find the following line, and change Remove the previous comment (#)
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and then modify the user so that it belongs to the root group (wheel). The command is as follows:
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After the modification, you can now log in with the tommy account, and then use the command su – , you can obtain root permissions to operate.
Method 2: Modify the /etc/sudoers file, find the following line, and add a line under root, as shown below:
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After the modification, you can now use tommy Log in with your account, and then use the command sudo - to obtain root permissions to operate.
Method 3: Modify the /etc/passwd file, find the following line, and change the user ID to 0, as shown below:
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