A user account in a Linux system is a collection of information associated with a specific user, including the user’s username, password, user ID (UID), group ID (GID), home directory, and shell. User accounts are used to control access to the system and its resources, such as files, directories, and commands. To manage user accounts in Linux, you can use the following commands:
- useradd – to create a new user account
- usermod – to modify an existing user account
- userdel – to delete a user account
- passwd – to change a user’s password
- groups – to display a user’s group memberships
These commands can be used to perform a variety of tasks, such as creating new user accounts, modifying existing user accounts, deleting user accounts, and changing user passwords. You can also use these commands to manage user groups and group memberships.