Shell Scripting Practice Exercises with Demonstration

This course will be beneficial for anyone who is interested in automating tasks or creating simple programs on a Linux operating system. Some examples of people who might benefit from learning shell scripting include: System administrators will be able to automate system maintenance tasks, such as backups and server updates. Data scientists will be able to learn about pre-process and organize data sets, or to automate data analysis pipelines. Web developers will be able to use to automate the deployment of web applications or to set up a local development environment. DevOps professionals will be able to use to automate the build, test, and deployment processes of software projects.

In this course we will cover the following:

Section 1:  Course Overview

• Course Overview

Section 2: Lab Setup

• Installation of Virtual Box

• Download & Installation of Linux(CentOS) on VirtualBox Step by Step

• Download, Install and connect through putty

Section 3: Shell Scripting Standards

• The Shell

• What is Shell Scripting?

• Naming Convention for Shell Script

• Shell Scripting Format

• File Permissions in Linux

• How to Run a Shell Script

• Basic Commands used in Shell Scripting

• Listing files and understanding LS output

• Text Editor vi Introduction

• Quiz

Section 4: Shell Scripting Basic Concepts

• Creating first script – Hello World

• Defining variable

• Arithmetic Expressions in Shell Scripting

• String Manipulation in Shell Scripting

• String Comparisons in Shell Scripting

• Read and Echo (Input/Output) statements

• Relational Operators in Shell Scripting

• Conditional Statements (Decision Making)

• Case Statement

• For loop in Shell Scripting

• Do-while in Shell Scripting

• Until Loop in Shell Scripting

• Select Loop in Shell Scripting

• Infinite Loops, and Sleeping

• Exit Status in Shell Scripting

• Special Variables in Shell Scripting

• Quiz

Section 5: Working with Functions, Arrays and String

• Functions in Shell Scripting

• Passing Parameters to a Function

• Nested Functions

• Indexed array in Shell Scripting

• Associative array in shell Scripting

• String Concatenation

• Extract a substring from a string

• Nested Loop in Shell Scripting

• Nested Conditions in Shell Scripting

• Shifting in Shell Scripting

• Quiz

Section 6: Real Life Scripting

• Searching and Extracting Data from Files

• Shell script to delete oldest files and folders

• Shell Script to Backup Files in Directory

• How to use Loops in a file system?

• Check Users Logged In, Ordered by Date, or IP Address

• How to trace log messages in a shell script?

• How to automate user account creation?

• How to check users not logged in?

• How to track the process’s status and terminate it?

• How to add and delete data from Inventory?

• How to reuse one script information to another?

• How to check the status and connectivity of remote hosts?

• How to schedule script through cron job?

• How to check disk space status?

• How to create and verify created files?

• How to create script on run time?

• Store data on live server database

• Get data from live database server

• Quiz

Section 7: Additional Content

• The Linux Directory Structure

• Absolute vs relative path of a directory

• Creating files and directories by command line

• Changing File Permissions

• Modify File Ownership for user and group

• Copying Directories and Files

• Removing Directories and Files

• head and tail commands

• Wild Cards

• Grep

• Pipe

• Shell Aliases

• Compressing and archiving files (using tar, gzip)

• Explanation of Tab Key Completion

• Find your IP address in linux

• User and group administration by command

• Ping command

• Handouts