hands-on lab

Working with Functions in Your Shell Scripts

Beginner
45m
669
4.5/5
Get guided in a real environmentPractice with a step-by-step scenario in a real, provisioned environment.
Learn and validateUse validations to check your solutions every step of the way.
See resultsTrack your knowledge and monitor your progress.
Lab description

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:

Updates

18th November, 2022 - Updated instructions to improve clarity

About the author
Avatar
Jun Fritz
Cloud Labs Developer
Students
38,452
Labs
103
Courses
1
Learning paths
6

Jun is a Cloud Labs Developer with previous experience as a Software Engineer and Cloud Developer. He holds the AWS Certified Solutions Architect and DevOps Engineer Professional certifications. He also holds the AWS Certified Solutions Architect, Developer, and SysOps Administrator Associate certifications. 

Jun is focused on giving back to the growing cloud community by sharing his knowledge and experience with students and creating engaging content. 

Covered topics
Lab steps
Accessing the Amazon Linux 2 Terminal
Defining Functions in Your Shell Scripts
Accessing Local Variables and Function Parameters