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This article covers how you can easily remove or add a new user to your Debian 10 system. One of the most basic tasks that you should know how to do on a fresh Linux server is add and remove users. 

In order to add and delete users on Debian, you need to have sudo rights, or to belong to the sudo group.

To check your sudo rights, run the following command:

$ sudo -v

If no error messages appear, you are good to go, otherwise ask your system administrator to provide you with sudo rights.


How to add a user using useradd ?

Run the following command:

$ sudo useradd <username>

To assign a password to the user, you can use the -p flag but it is not recommended as other users will be able to see the password.

To assign a password to a user, use the passwd command:

$ sudo passwd <username>



This article covers how to add users into the sudoers group. Also you will learn how to edit rules in the sudoers configuration file through the command. You can customize the sudoers file based on the user requirements. Sudo stands for superuser do. Sudo is a command used in Unix-like systems to allow a regular user to execute a program as another user. In most cases, it is the root user.

The sudo command allows authorized users to perform commands as another user, which is by default the root user. 

This option gives you administrator-level permissions to run programs on your machine. It is an alternative to using the su command.



This article covers how to add and remove users in the sudo group to manage the sudo privileges of the users. sudo is a command-line program that allows trusted users to execute commands as root or another user.



This article covers how to add a user as well as how to remove it in case you no longer need it. We also described how to add and remove a user to and from a group. If you are using Ubuntu distribution, visit how to add or remove users in Ubuntu

You may need to create separate account for every user want to connect this system. To add new users in system there are two commands available in your system, useradd and adduser. adduser command is the enhanced version of useradd command. adduser command uses useradd command in backend. 



This article covers how to create a user with sudo privileges. You can now log in to your CentOS server with this user account and use sudo to run administrative commands.

Performing server administration as a non-root user is a best practice.

For security, your first task when deploying a CentOS instance is to create a non-root user with sudo access.


How to Add a New User Account on CentOS Linux System ?

1. To Create a new user account with the adduser command:

# adduser example_user

2. Set a strong password for the new user (new_user) with passwd.

# passwd new_user



This article covers how to create a user with sudo privileges. You can now log in to your Debian server with this user account and use sudo to run administrative commands. Basically, In linux sudo is masterpiece to allow users to execute commands with another user's privileges, default is root user.


How to Create a new user account in Debian ?

Create a new user account using the adduser command. Don't forget to replace username with your desired user name:

$ adduser username


To Add the user to the sudo group

Use the usermod command:

$ usermod -aG sudo username



This article covers how to create a user with sudo privileges. You can now log in to your Ubuntu server with this user account and use sudo to run administrative commands.

Basically, The sudo command provides a mechanism for granting administrator privileges, ordinarily only available to the root user, to normal users. 



This article covers how to add a user to sudoers using different methods, limit root access with sudo and remove a user from sudoers.

Sudo is a very handy tool for system administrators that allow them to provide root access to a user with granularity.


Steps to Add Sudo User on Ubuntu ?

1. Log into the system with a root user or an account with sudo privileges.

2. Open a terminal window and add a new user with the command:

# adduser newuser

The adduser command creates a new user, plus a group and home directory for that user.

You may get an error message that you have insufficient privileges. (This typically only happens for non-root users.) Get around it by entering:

# sudo adduser newuser

3. You can replace newuser with any username you wish. The system will add the new user; then prompt you to enter a password. Enter a great secure password, then retype it to confirm.


To Add User to Sudo Group:

1. In a terminal, enter the command:

# usermod -aG sudo newuser

Replace newuser with the username that you entered in Step 1.

Again, if you get an error, run the command with sudo as follows:

# sudo usermod -aG sudo newuser

The -aG option tells the system to append the user to the specified group. (The -a option is only used with G).



This article covers how to add a user to a group on Ubuntu Linux System. If you want to learn about adding or removing a user on Linux OS, you can follow our guide on How to Add and Remove Users on Linux .

User accounts can be assigned to one or more groups on Linux. You can configure file permissions and other privileges by group. For example, on Ubuntu, only users in the sudo group can use the sudo command to gain elevated permissions.


To Add a New Group on Ubuntu Linux:

If you want to create a new group on your system, use the groupadd command following command, replacing new_group with the name of the group you want to create:

$ sudo groupadd mynewgroup


To Add an Existing User Account to a Group:

To add an existing user account to a group on your system, use the usermod command, replacing examplegroup with the name of the group you want to add the user to andexampleusername  with the name of the user you want to add:

$ usermod -a -G examplegroup exampleusername



This article covers how you can add and remove users on Ubuntu and assign them administrator privileges. Based on your convenience, you can either choose to add and remove users either through the command line or GUI. 

Ubuntu, like any other Linux distribution, is a multi-user operating system. Each user can have different permission levels and specific settings for various command-line and GUI applications.

Knowing how to add and remove users is one of the basic skills a Linux user should know.


To add a user in Ubuntu via GUI:

1. Open the Activities overview and start typing Users.

2. Click on Users to open the panel.

3. Press Unlock in the top right corner and type in your password when prompted.

4. Press the + button, below the list of accounts on the left, to add a new user account.


To remove a user from Ubuntu:

1. Open the terminal app.

2. Login to server using the ssh user@server-ip-here command.

3. Run sudo deluser --remove-home userNameHere command to delete a user account on Ubuntu.

4. Verify it by running id command.


To Remove a Linux user:

1. Log in to your server via SSH.

2. Switch to the root user: sudo su -

3. Use the userdel command to remove the old user: userdel user's username.

Optional: You can also delete that user's home directory and mail spool by using the -r flag with the command: userdel -r user's username.


To Add a User to Linux:

1. Log in as root.

2. Use the command useradd "name of the user" (for example, useradd linuxapt)

3. Use su plus the name of the user you just added to log on.

4. "Exit" will log you out.


Linux operations commands:

1. adduser : add a user to the system.

2. userdel : delete a user account and related files.

3. addgroup : add a group to the system.

4. delgroup : remove a group from the system.

5. usermod : modify a user account.

6. chage : change user password expiry information.


How do I assign a user to a group in Linux?

1. To create a new group, enter the following: sudo groupadd new_group.

2. Use the adduser command to add a user to a group: sudo adduser user_name new_group.

3. To delete a group, use the command: sudo groupdel new_group.

4. Linux comes with several different groups by default.



This article will guide you on how to use the root user on #OpenSUSE Linux and the sudo command.To use sudo, you need to install and configure sudo on the OpenSUSE #Linux server. The #sudo command allows you to run #programs with the security privileges of another user (by default, as the #superuser). Using the #sudoers file, system administrators can give certain users or groups access to some or all commands without those users having to know the root password.



This article will guide you on how to run commands as root user using nonuser, su, and sudo utilities.



This article will guide you on how to add a new and existing user account to sudo in CentOS 8 by appending them to wheel group so that they can run admin commands.




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