TestOut Linux Pro Practice Test 2025 – Complete Exam Prep Guide

The purpose of the 'sudo' command in Linux is to execute commands with superuser privileges. This command allows a permitted user to run a command as the superuser or another user, as specified by the security policy in the system. It is particularly useful for tasks that require higher-level permissions, such as installing software packages, modifying system configurations, and performing maintenance tasks that are restricted to the superuser.

Using 'sudo' enhances security by allowing users to perform administrative tasks without needing to switch users entirely or log in as the root user, thereby reducing the risk of unintentional system changes or security breaches. Users must be granted permissions to use 'sudo' through the sudoers configuration file, which allows for fine-grained control over who can perform which commands with elevated privileges.

In contrast, other options do not accurately reflect the function of 'sudo':

- Securing a system from unauthorized access typically involves user authentication and permissions, not the use of 'sudo.'

- Scheduling tasks to run in the background is usually accomplished with commands like 'cron' or 'at,' not 'sudo.'

- Shutting down the system safely is done using commands such as 'shutdown' or 'poweroff,' which can also require 'sudo,' but are not