linux_shell_scripting

Bash script for generating multiplication table

Bash Multiplication Table Script

Project Overview

This project is a Bash script that generates a multiplication table based on user input. The user is given the choice to generate either:

• A full table (from 1 to 10).
• A partial table (within a specified range).

Additionally, the script demonstrates two types of loops:

1. List-style for loop {1..10}
2. C-style for loop for ((i = 1; i <= 10; i++))

The script also includes interactive features, such as:

• User input prompts
• Input validation
• Dynamic interaction (users can retry with different numbers)

Features & Implementation

1️⃣ Using the List Form For Loop

• The script first prompts the user to enter a number.
• If the user chooses a full table, the script uses a list-style loop {1..10} to iterate through numbers 1 to 10.
• Each iteration calculates the product and prints the result.

2️⃣ Using the C-style For Loop

• The script then uses a C-style for loop, which follows a for ((i=start; i<=end; i++)) structure.
• This approach is more flexible and commonly used in other programming languages like C, Java, and Python.

3️⃣ Handling User Input & Validation

• Users enter a number for which the multiplication table will be generated.
• Users then choose between a full or partial table.
• If a partial table is selected, they provide the start and end values for the range.
• The script checks for invalid inputs, ensuring numbers are within the expected range (1–10).
• If an invalid range is entered, it defaults to a full table.

4️⃣ Interactive Experience

• The script runs in a loop, allowing users to generate multiple tables without restarting.
• Users can exit gracefully by choosing 'n' when prompted.

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Code Implementation

Below is the complete script used for this project:

📜 Image: Complete Script

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Running the Script

To execute the script, ensure it has the necessary permissions:

chmod +x multiplication_table.sh
./multiplication_table.sh

📜 Image: Runnnig script Executed the script, demonstrated the different scenarios where the user performed full calculation, partial calculation, and error handling when the user entered an unexpected variable #