How can you tell if a user deleted Linux? So, there’s a chance that by simply going through /var/log/auth. log you will find the userid of a local Unix user which was recently removed.
How do you check user is added or not 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.
What does the userdel command do in Linux? The userdel command removes the user account identified by the login parameter. The command removes a user’s attributes without removing the user’s home directory by default. The user name must already exist. If the -r flag is specified, the userdel command also removes the user’s home directory.
How add or remove user in Linux? Add a user in Linux
By default, useradd creates a user without creating a home directory. So, to make useradd create a home folder, we’ve used the -m switch. Behind the scenes, it automatically creates the user john by assigning a unique user ID for the user, and adding the user’s details to the /etc/passwd file.