TestOut Linux Pro Practice Test 2026 – Complete Exam Prep Guide

The command to rename a group in Linux is accurately represented by the first option, utilizing `groupmod`. The syntax of the command is `groupmod -n newname oldname`.

This command works by specifying the `-n` flag followed by the new name for the group you wish to rename, and then providing the current name of the group as the second argument. The `groupmod` utility is specifically designed to modify group attributes, and renaming is one of its functionalities.

The other options do not correspond to valid commands in Linux for renaming groups. For instance, `renamegroup` and `groupchange` are not standard commands in Linux for altering group names, and `modgroup` is also not a recognized utility. Therefore, the first option correctly identifies the command and syntax used to achieve the task of renaming a group in a Linux environment.