Bash Shell Scripting Online Course

Bash Shell Scripting Online Course

Bash is a command processor that runs in a text window where the user types command that cause actions. Bash can also read and execute commands from a file, called a shell script. These commands are used in a terminal that acts as an interface to the shell interpreter. The shell script is a programming language in itself used to define variables, functions. You can do conditional execution of shell commands as well.

Course Outline

The Bash Shell Scripting Online Course covers important topics including - 

Unit 1 - Ground – Zero (3)  

•  Course Overview 
•  Getting the Best Out of this Course 
•  Repetitions 

Unit 2 - Getting Started – The Basics (10)  

•  Overview 
•  Editors - vi, nano, vim, GUI Editors, Etc. 
•  My First Script 
•  Accepting an Input from the User 
•  Passing Arguments 
•  Functions - The Basics 
•  "printf" Statement - Part 1 
•  "printf" Statement - Part 2 
•  Escape Character & Line Continuation Character 
•  Getting Started - Assignment #1 

Unit 3 - Understanding Variables (12)  

•  Overview 
•  Variables - Basic Concepts 
•  Using Variables - Basics 
•  Global variables, and Variable Scope 
•  Environment Variables 
•  Positional Parameters 
•  Other Shell Variables - Part 1 
•  Other Shell Variables - Part 2 
•  Variables in Functions (Local Variables) 
•  Declare Statement 
•  Source and Export Commands 
•  Command Substitution 

Unit 4 - Operators (10)  

•  Overview 
•  Types of Operators 
•  Conditional Tests 
•  Performing Arithmetic Operations 
•  Arithmetic Operators – Part 1 
•  Arithmetic Operators – Part 2 
•  Arithmetic Comparison Operators 
•  String Comparison Operators 
•  Logical Operators 
•  File Test Operators 

Unit 5 -  Customizing Shell Environment (4)  

•  Bash Shell Special Files 
•  Alias Command 
•  Practical Usage of the Profile File 
•  Shell Prompt Customization 

Unit 6 - Shell Parameter Expansion (2)  

•  Brace Expansion 
•  Shell Parameter Expansion 

Unit 7 -  Flow Control (6)  

•  Conditional Statement - if..then..else 
•  Creating Loops Using "while" and "until" 
•  Creating Loops Using "for" 
•  Controlling the Flow - sleep, continue, break & exit 
•  "case" Statement 
•  Creating User Menus - "select" Statement 

Unit 8 -  File Processing (4)  

•  Reading Files Using "while" 
•  Reading Files Using "for" 
•  Assignment - passwd 
•  Assignment - passwd - Solution 

Unit 9 - Functions - Revisited (4)  

•  Simple Function 
•  Returning Data 
•  Passing Arguments to Functions 
•  Using Functions from External Scripts 

Unit 10 -  Parsing Command Line Arguments (2)  

•  Using the "shift" Function 
•  Parsing Arguments Using "getopts " 

Unit 11 -  Process Handling and Running Scripts (8)  

•  Process, Parent Process, Child Process, & Process ID (PID) 
•  Types of Processes - FG, BG, and D 
•  Viewing the Running Processes (ps Command) 
•  "nohup" Command 
•  "time" Command 
•  Signals 
•  Killing Processes - "kill" Command 
•  Job Control - jobs, fg, and bg 

Unit 12 -  Scheduling Scripts (3)  

•  Scheduling Concepts 
•  "at" Command & "batch" Command 
•  "cron" Command 

Unit 13 - Debugging Scripts (3)  

•  Debugging - Part 1 
•  Debugging - Part 2 
•  Debugging - Part 3 

Unit 14 -  Scripting @ The Command-line (5)  

•  Overview 
•  Using "semicolon" and "pipe" 
•  Using && and || 
•  Killing Processes using "awk" and "xargs" 
•  Loops at the Command-line 

Unit 15 -  Linux Commands – Quick Refresher (4)  

•  "tar" Command - Part 1 
•  "tar" Command - Part 2 
•  Basic System - Commands 
•  Shutdown and Reboot 

Unit 16 -  Standard I/O Concepts (5)  

•  Standard I/O Concepts 
•  Standard I/O Demo 
•  Terminal and Null Files 
•  File Descriptors Usage 
•  Using "I" (pipe) - sort & uniq Commands