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