Novell Certified Linux Professional (CLP) — Question 2

You want to add user tux to the southpole group without changing his primary group membership.
Which command do you use for this purpose?

Answer options

• A. useradd –g southpole tux
• B. usermod –g southpole tux
• C. groupadd –A tux southpole
• D. groupmod –A tux southpole

Correct answer: D

Explanation

The correct command is D, as 'groupmod' is used to modify an existing group and the '-A' option adds a user to that group without altering their primary group. Option A is incorrect because 'useradd' is for creating new users, while option B changes the primary group of the user. Option C is wrong as 'groupadd' is meant for creating new groups, not modifying existing ones.