LPIC3 300 Mixed Environment Practice Test 2025 - Free LPIC3 Certification Practice Questions and Study Guide

The command to successfully delete a user in Samba is `smbpasswd -x username`. This command is specifically designed to remove a Samba user by their username from the Samba database. When executed, it effectively deletes the specified user's Samba account, meaning they will no longer have access to any shares or resources that are secured by Samba.

Understanding the context here, Samba uses its own database for managing users since it operates in a mixed Windows and Unix environment. The `smbpasswd` command is used for managing Samba user accounts and passwords.

The other options provided do not accomplish the task of deleting a user from Samba:

- The command `smbpasswd -d username` is used for disabling a user account in Samba, not deleting it.

- The option `smb,userremove username` is not a valid command within the Samba context and appears to be a typographical error or misrepresentation.

- Using `remove samba user username` is also not a recognized command in Samba for user management, as it does not follow the syntax and structure of valid commands for managing Samba users.

Thus, using `smbpasswd -x username` is the correct and standard method for removing a user's Samba account.