Take note of the username and user name you wish to remove. You can list all system users by using the cat command. You can remove a user by using the -f option. You can force the removal of a user by using the -r option.
How do I remove a user from etc passwd?
1. Make a note of the user who wants to be removed. You can see all the users and their usernames by using the below cat command: # cat /etc/passwd.2. Use the userdel command to delete a user.3. Use the -f option to force a user to be deleted in case he is logged.