Bash Scripting Repository

Welcome to the Bash Scripting Repository! This repository contains various Bash scripts for automating tasks and managing system operations, as part of an introduction to Bash scripting.

Table of Contents

• Introduction
• Scripts
  • Directory Management
  • Variables
  • Data Types
  • Special Variables
  • Backup Script
  • Arithmetic Operators
  • Conditional Statements
  • Functions
• Usage
• Contributing
• License

Introduction

This repository is designed to provide useful Bash scripts for system administrators and users who want to automate common tasks. Each script is self-contained and includes instructions for use.

Scripts

Directory Management

• 01_CreateDirectories.sh: A script to create multiple directories.

Variables

• 02_Variable.sh: Demonstrates the use of variables in Bash.
• 03_DataTypes.sh: Explains different data types in Bash scripting.
• 04_Var_SystemDefined.sh: Shows how to use system-defined variables.
• 05_Var_UserDefined.sh: Illustrates user-defined variables.
• 06_Var_SpecialVariable.sh: Discusses special variables in Bash.

Backup Script

• 07_Prob_backupscript.sh: A script that creates a backup of specified files.

Arithmetic Operators

• 08_ArithmeticOperators_().sh: Demonstrates arithmetic operations using parentheses.
• 09_ArithmeticOperators_expr.sh: Shows arithmetic operations using the expr command.

Conditional Statements

• 10_IF_NumberComp.sh: A script that uses if statements for number comparison.
• 11_IFelse_NumberComp.sh: Demonstrates the use of if-else statements for number comparison.

File Comparison

• 12_FileComp.sh: A script that compares files and outputs the differences.

Loops

• 13_Loops.sh: Introduces looping constructs in Bash, such as for, while, and until.

Conditional Statements

• 14_ConditionalStment.sh: Explores additional conditional statements in Bash.

Data Streams

• 16_DataStreams.sh: Discusses data streams in Bash, including standard input, output, and error.

Functions

• 17_Functions.sh: Introduces functions in Bash scripting.

Additional Scripts: Assignments

Task 1: Backup Script

• Description: This script creates a backup of all .txt files in the current directory and appends the current date and time to the filenames.
• Usage: Run the script in the directory containing the .txt files.

Task 2: System Health Check

• Description: This script checks the system's CPU and memory usage, reporting if the CPU usage is above 80% or if available memory is below 20%. Results are logged to system_health.log.
• Usage: Run the script in a terminal to perform the health check.

Task 3: User Account Management

• Description: This script reads a list of usernames from user_list.txt, creates new users, generates random passwords, and saves the credentials to credentials.txt.
• Usage: Ensure you have a user_list.txt file with usernames, then run the script with superuser privileges.

Usage

To use any of the scripts in this repository, follow these steps:

1. Clone the repository to your local machine:

   git clone https://github.com/ShreyasBh02/bash-scripting-repo.git