Apr 01, 2015 Step 1: Delete the User. It’s just one simple command to delete a user. In this case, we’re deleting a user called mynewuser: If you want to remove all of the files for the user, then use -r: Step 2: Remove Root Privileges to the User. Find the following code: In this case, we’re removing root privileges from the user mynewuser. Apr 05, 2013 This Linux video tutorial from demonstrates how to create users and groups on a Linux server. We will take a closer loo. Dec 17, 2018 Change username with your actual system user name and groupname with named of group from which you want to remove user. Use the following command to remove user jack from sysadmin group. Gpasswd -d jack sysadmin Add User to Secondary Group. The following command will will add user jack to a secondary group named sysadmin. Usermod -aG sysadmin jack. Oct 28, 2014 When you first start using a fresh Linux server, adding and removing users is one of the most basic tasks that you should know how to do. In this guide, we will cover how to create user accounts, assign sudo privileges, and delete users on a CentOS 7.
Related
Dec 30, 2018 You need to use the userdel command to delete a user account and related files from user account under Linux operating system. The userdel command must be run as root user on Linux. The userdel command must be run as root user on Linux.
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Introduction
When you first start using a fresh Linux server, adding and removing users is one of the most basic tasks that you should know how to do. When you create a new server, you are only given the
root account by default. While this gives you a lot of power and flexibility, it is also dangerous to regularly use an account with so much power; for example, a root user is more vulnerable to security exploits, since any commands run under that account can affect the server’s entire filesystem.
It is almost always a better idea to add an additional, unprivileged user to do common tasks. You should also create additional accounts for any other users that need access to your server. Each user should have an additional account so that their activities can be monitored and managed. You can still acquire administrative privileges, when needed, through a mechanism called
sudo . In this guide, we will cover how to create user accounts, assign sudo privileges, and delete users on a CentOS 7 server.
Adding Users
If you are signed in as the
root user, you can create a new user at any time by typing:
How To Delete User In Linux
If you are signed in as a non-root user who has been given
sudo privileges, as demonstrated in the next section of this tutorial, you can add a new user by typing:
Next, you’ll need to give your user a password so that they can log in. To do so, use the
passwd command:
Note: Remember to add
sudo ahead of the command if you are signed in as a non-root user with sudo privileges.
You will be prompted to type in the password twice to confirm it. Now your new user is set up and ready for use! You can now log in as that user, using the password that you set up.
Granting Sudo Privileges to a User
If your new user should have the ability to execute commands with
root (administrative) privileges, you will need to give the new user access to sudo .
We can do this by adding the user to the
wheel group (which gives sudo access to all of its members by default) through the gpasswd command. This is the safest and easiest way to manage sudo user rights.
If you are currently signed in as the
root user, type:
If you are signed in using a non-root user with
sudo privileges, type this instead:
Now your new user is able to execute commands with administrative privileges. To do so, simply type
sudo ahead of the command that you want to execute as an administrator:
You will be prompted to enter the password of the regular user account that you are signed in as. Once the correct password has been submitted, the command you entered will be executed with
root privileges.
Managing Users with Sudo Privileges
While you can add and remove users from a group (such as
wheel ) with gpasswd , the command doesn’t have a way to show which users are members of a group. In order to see which users are part of the wheel group (and thus have sudo privileges by default), you can use the lid function. lid is normally used to show which groups a user belongs to, but with the -g flag, you can reverse it and show which users belong in a group:
The output will show you the usernames and UIDs that are associated with the group. This is a good way of confirming that your previous commands were successful, and that the user has the privileges that they need.
Deleting Users
If you have a user account that you no longer need, it’s best to delete the old account. You have a couple of methods to do so, though the choice of which method to use depends on your own situation.
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If you want to delete the user without deleting any of their files, type this command as
root :
If you want to delete the user’s home directory along with the user account itself, type this command as
root :
Note: Remember to add
sudo ahead of the command if you are signed in as a non-root user with sudo privileges.
With either command, the user will automatically be removed from any groups that they were added to, including the
wheel group if they were given sudo privileges. If you later add another user with the same name, they will have to be added to the wheel group again to gain sudo access.
Conclusion
You should now have a good grasp on how to add and remove users from your CentOS 7 server. Effective user management will allow you to separate users and give them only the access that is needed for them to do their job. You can now move on to configuring your CentOS 7 server for whatever software you need, such as a LAMP or LEMP web stack.
For more information about how to configure
sudo , check out our guide on how to edit the sudoers file.
In Linux we can delete local user accounts with the ‘userdel’ command. Here we will cover some examples of using the various syntax options with userdel in order to remove a local user account in Linux.
If you need test accounts to practice deleting, see our post on creating new user accounts. 70 hp j70tlcca manual download free.
Remove a User Account
We can delete local user accounts in Linux with the ‘userdel’ command, essentially all we really need to do is specify a username that exists after the command that we wish to remove. Lenovo thinkpad edge 14 reviews.
This will delete the testaccount user from the /etc/passwd, /etc/group and /etc/shadow configuration files, however by default it will not delete the user’s home directory or contents.
If you also wish to clean up the home directory when deleting a user, specify the -r flag.
The -r flag will also delete the user’s mail spool.
Note: By default the ‘userdel’ command will not successfully remove a logged in user that has running processes, to remove the user you would usually need to stop these processes and logout first. With the -f option, we can force userdel to delete the account regardless of any running processes. This option also essentially performs the functionality of the -r flag, in that the user’s home directory and mail will also be removed.
Summary
As shown it is quite straightforward to delete a local user account in Linux with the ‘userdel’ command, simply specify the username you wish to delete and specify whether or not you want to also remove the home directory and mail contents.
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