Change Runlevels and Shutdown or Reboot System

Introduction

Welcome to the Change Runlevels and Shutdown or Reboot System Practice Lab. In this module you will be provided with the instructions and devices needed to develop your hands-on skills.

Learning Outcomes

In this module, you will complete the following exercises:

• Exercise 1 - Change Runlevels and Shutdown or Reboot System

After completing this lab, you will be able to:

• Log into a Linux System
• Configure a runlevel
• Switch among runlevels
• Shutdown and reboot the system from the command line
• Alert users before switching runlevels or other major system events
• Understand terms and utilities

Exam Objectives

The following exam objectives are covered in this lab:

• LPI: 101.3 Change runlevels / boot targets and shutdown or reboot system
• CompTIA: 2.4 Given a scenario, manage services.

Lab Duration

It will take approximately 1 hour to complete this lab.

Exercise 1 - Change Runlevels and Shut down or Reboot System

A run level on a Linux system is the definition of what all services are running on the system. To run each service, relevant parameters need to be initialized in the init file. Therefore, each level defines the state of various parameters in the init file. Each run levels is referred to by a number. You can change between run levels to activate or shut down various services, as required.

In this exercise, you will understand how to change runlevels to shut down or reboot systems.

Learning Outcomes

After completing this exercise, you will be able to:

• Log into a Linux System
• Configure a runlevel
• Switch among runlevels
• Shutdown and reboot the system from the command line
• Alert users before switching runlevels or other major system events
• Understand terms and utilities