In this lab, you will utilize functions, parameters, and variables in a shell script. The commands used in this lab have been covered in the Functions in Scripts course. References to the specific lessons of the course will be provided throughout the lab steps.

Expected outputs for each lab step is provided in the script comments

The Linux commands and tools referenced in this lab are:

• Shell Variables
• Functions
• Command Exit Statuses
• exit
• echo
• vim, nano, or emacs

Learning Objectives

Upon completion of this lab, you will be able to:

• Create a function in a shell script
• Access the positional parameters passed into a function
• Define global and local variables

Intended Audience

• Those beginning to work with Linux
• Those looking to gain experience with basic shell scripting
• Software Engineers
• DevOps Engineers

Prerequisites

Familiarity with basic Linux commands will be beneficial. Refer to the following course to fulfill the prerequisite:

• Shell Scripting, Succinctly
• Functions in Scripts

Updates

18th November, 2022 - Updated instructions to improve clarity