How do I manage users and groups in Linux?
- adduser : add a user to the system.
- userdel : delete a user account and related files.
- addgroup : add a group to the system.
- delgroup : remove a group from the system.
- usermod : modify a user account.
- chage : change user password expiry information.
How does groups work in Linux?
- Every process belongs to a user (like julia )
- When a process tries to read a file owned by a group, Linux a) checks if the user julia can access the file, and b) checks which groups julia belongs to, and whether any of those groups owns & can access that file.
How do I see all users and groups in Linux? In order to list users on Linux, you have to execute the “cat” command on the “/etc/passwd” file. When executing this command, you will be presented with the list of users currently available on your system. Alternatively, you can use the “less” or the “more” command in order to navigate within the username list.
How do I list all groups in Linux? Listing Groups Using getent
You can use the “getent” command for listing the users on the Linux system. If you do not provide the key, you will get the entire group file.