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How to Add Second Account to Family Group Switch

Introduction

The sudo command stands for "Super User DO" and temporarily elevates the privileges of a regular user for administrative tasks. The sudo command in CentOS provides a workaround past assuasive a user to elevate their privileges for a single job temporarily.

This guide will walk you through the steps to add a user to sudoers in CentOS.

Tutorial on how to create a sudo user on CentOS 7.

Prerequisites

  • A organisation running CentOS 7
  • Access to a user account with root privileges

Note: Linux Sudo Command tutorials likewise available for Debian and Ubuntu.

Add User to Sudoers on CentOS

Stride one: Login every bit Administrator

If yous're working on a local machine, log in to the system with administrator credentials.

If you're connecting to a remote automobile (over a network), open a terminal window and enter the command:

          ssh [email protected]_ip_address

The server_ip_address is the network IP address of the server you're logging into. Enter your credentials when prompted.

Step 2: Create a New Sudo User

To add a new sudo user, open the terminal window and enter the command:

          adduser UserName

Use the bodily username for your new user in place of UserName .

Adjacent, create a password for the new user by entering the following in your final window:

          passwd UserName

The organisation should brandish a prompt in which you can set and ostend a countersign for your new user business relationship. If successful, the system should respond with "all authentication tokens updated successfully."

How to Add together Users to Sudo Grouping

By default, CentOS 7 has a user group chosen the "wheel" group. Members of the bike group are automatically granted sudo privileges. Adding a user to this group is a quick and easy way to grant sudo privileges to a user.

Step 1: Verify the Cycle Group is Enabled

Your CentOS 7 installation may or may not have the cycle group enabled.

Open up the configuration file past entering the command:

          visudo

Ringlet through the configuration file until you see the post-obit entry:

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

If the 2d line begins with the # sign, it has been disabled and marked as a comment. Just delete the # sign at the beginning of the 2d line so it looks like the post-obit:

          %cycle        ALL=(ALL)       ALL

Then save the file and get out the editor.

Annotation: If this line didn't get-go with a # sign, y'all don't need to make whatsoever changes. The wheel group is already enabled, and you lot can shut the editor.

Annotation: If this line didn't kickoff with a # sign, y'all don't need to make any changes. The wheel group is already enabled, and you can shut the editor.

Step 2: Add User to Group

To add a user to the wheel group, use the command:

          usermod –aG bike UserName

Equally usual, supervene upon UserName with the name of the user receiving sudo privileges.

Step: 3 Switch to the Sudo User

Switch to the new (or newly-elevated) user business relationship with the su (substitute user) control:

          su - UserName

Enter the countersign if prompted. The terminal prompt should alter to include the UserName.

Enter the following command to listing the contents of the /root directory:

          sudo ls -la /root

The final should request the password for UserName. Enter it, and you should see a brandish of the list of directories. Since list the contents of /root requires sudo privileges, this works as a quick style to prove that UserName can use the sudo command.

Alternative: Add User to Sudoers Configuration File

If there's a problem with the wheel group, or administrative policy prevents you from creating or modifying groups, you can add together a user directly to the sudoers configuration file to grant sudo privileges.

Step 1: Open the Sudoers File in an Editor

In the terminal, run the following command:

          visudo

This will open the /etc/sudoers file in a text editor.

Step 2: Add the New User to file

Gyre downwards to detect the post-obit section:

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

Right afterwards this entry, add together the following text:

          UserName ALL=(ALL) ALL

Replace UserName with the username you lot created in Pace 2. This section should expect like the following:

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

Save the file and get out.

Pace 3: Test Sudo Privileges for the User Account

Switch user accounts with the su (substitute user) command:

          su — UserName

Enter the password for the account, if prompted. The terminal prompt should alter to include UserName.

List the contents of the /root directory:

          sudo ls —la /root

Enter the password for this user when prompted. The last should display a list of all the directories in the /root directory.

Decision

This guide showed you how to add a user to sudoers in CentOS or modify the privileges of an existing sudo user .

The Linux sudo command is critical for running advanced and administrative tasks on a Linux system. While this could be done using a root user (or administrator account) using the su command, arrangement administrators advise against operating permanently in a root account. Not simply tin can it exist a security risk, but it can too allow changes to a Linux system that can intermission functionality.

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Source: https://phoenixnap.com/kb/how-to-create-add-sudo-user-centos