![]() The following example creates a new group computer on the system. You can add a new group to the system using the groupadd or addgroup command. To delete a user along with its home directory, you can use: $ sudo userdel -r james 10. It does not delete the home directory of a user in the /home directory. The usedel command without any flags only removes a user. The below command deletes a user james from the system. The userdel command helps to remove a user in Linux. When the user account is not needed, you might want to delete it from the system. The following command changes the password of a user james. The passwd command is used to change the user’s password in Linux. ![]() Next, log in as a user james and run the sudo command to confirm. The -a option adds a user to the group without removing the current group. This command adds a user james to the sudo group. You can add a user to the sudoers group and provide sudo privileges to that user. The following command adds a user james to the group ubuntu. The -G flag allows you to specify the secondary group for a user. But you can assign a user to multiple secondary groups. ![]() In Linux, a user can have only one primary group. The specified group must already exist in the system. For example, to change the primary group of a user james to linuxwizardry, you can run this command. The -g option with usermod command changes the primary group of a user. The following command changes the user ID of james to 4567. The usermod command with -u flag can be used to change the UID of a user. Change the user ID of a userīy default, the system automatically sets the next available UID when creating a user. $ sudo usermod -l james henryĪs you can see, the username is changed to james. This command renames the user henry to james. You can use the usermod command to change a user’s login name in Linux. Alternatively, you can use the grep command. To find a user henry, you can see the last entries. The new entries are saved at the end of a file. username:password:UID:GID:GECOS:home_directory:shell The fields are separated by a colon : symbol and contains the following information. $ cat /etc/passwdĮach user has one entry per line. You can use the cat command to view the content of /etc/passwd. The /etc/passwd is a plain text file that stores the user account information in Linux. To verify the user, you can try to log in as a new user. It will prompt you to enter the password for the new user and other user details. You can add a new user to the system using the adduser command. The following command creates a new user henry in the system. To follow the tutorial, you will need to switch to the root user or any user with sudo privileges. We will cover the practical examples of all commands in this article. The command-line tools to manage the users and groups in Linux are: This tutorial will demonstrate how to manage users and groups in the Linux system. This makes it easier to provide permission for multiple users. All users in the group will have the same group permission on files and folders. Every user belongs to a primary group, and users can be added to multiple secondary groups. In Linux, each user has their own login name and a home directory. User and group management are the two most important tasks to be performed by Linux administrators. incident will be reported.Linux is a multi-user and multi-tasking operating system. However whenever I try to sudo with a user I know is in the group I receive the usual ".user not in sudoers.
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