Which command would you use to view the full details of the current user?

Using the id command is the best choice for viewing the full details of the current user. When executed, this command provides comprehensive information about the user, including the user ID (UID), group ID (GID), and the groups to which the user belongs. This level of detail is essential for understanding user permissions and roles within the system.

The other commands do not provide the same breadth of information. For example, who displays a list of users currently logged into the system but lacks specifics about any individual user’s attributes. The usermod command is primarily used for modifying user accounts rather than viewing details, and passwd is specific to changing a user's password—again, not for displaying user attributes. Therefore, id is the most appropriate command for obtaining the full details of the current user.