Shell Script Programming

Explanation

Here is a breakdown of the Shell script for your studies:

1. Purpose

This program prompts the user to enter a number of terms ($n$) and generates the Fibonacci series up to that count. It prints each term step-by-step, explaining how each value is derived.

2. Key Concepts

• User Input (read -p): Captures input directly into a variable.
• C-Style for Loop: Uses for (( i=1; i<=n; i++ )) to iterate a specific number of times.
• Conditional Logic (if/elif/else): Handles special starting base cases versus calculated terms.
• Arithmetic Expansion ($(( ... ))): Performs mathematical calculations in Bash.
• Variable Updating: Shifts variable values (a=$b, b=$next) to calculate future terms.

3. Code Walkthrough

1. Initialization (a=0, b=1): Sets up the standard starting base values of the