How to create user and Group in Linux

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As a DevOps engineer, understanding and utilizing the adduser command in Linux is essential for managing user accounts efficiently. Here are some of the key uses and benefits:

User Management

Creating Users: adduser is a straightforward command used to create new user accounts. This is fundamental for managing access to systems and applications.
Assigning Groups: During user creation, adduser allows you to assign users to specific groups, which helps in managing permissions and access controls.
Setting User Details: The command enables setting user-specific details such as home directory, shell, and full name, which can be important for user identification and environment configuration.

To check user is created :

How to Create a Group in Linux

In Linux, a group is a collection of user accounts that are combined together to make it easier to manage permissions and access to files and directories. Groups allow you to set permissions for multiple users at once, instead of configuring permissions for each user individually. Here’s a simple explanation:

Why Groups are Useful

Simplified Permission Management: Instead of assigning permissions to each user, you can assign permissions to a group. All users in that group will inherit those permissions.
Organized Access Control: Groups help in organizing users based on roles, departments, or any other criteria, making it easier to manage who has access to what resources.

Example

Imagine you have a project team with three members: Alice, Bob, and Carol. You can create a group called project_team and add all three users to this group. Now, if you want to give read and write access to a specific directory for this team, you can set the permissions for the project_team group instead of setting them individually for Alice, Bob, and Carol.

Create another group :-

By following these steps, you can effectively assign permissions to a specific group for any directory or file in Linux.

Conclusion

In Linux, managing users and groups is crucial for efficient system administration and security. Groups allow you to set permissions collectively, simplifying the management of access rights. Here are the steps to create and manage users and groups: