Write a shell script to implement a menu driven calculator with following functionsa) Additionb) Subtractionc) Multiplicationd) Divisione) Modulus

Sure, here is a simple shell script for a menu driven calculator:

#!/bin/bash

while true
do
    echo "Menu Driven Calculator"
    echo "1. Addition"
    echo "2. Subtraction"
    echo "3. Multiplication"
    echo "4. Division"
    echo "5. Modulus"
    echo "6. Exit"
    echo "Enter your choice: "
    read choice

    if [ $choice -eq 6 ]
    then
        break
    fi

    echo "Enter two numbers: "
    read num1 num2

    case $choice in
        1) result=`echo $num1 + $num2 | bc`
        ;;
        2) result=`echo $num1 - $num2 | bc`
        ;;
        3) result=`echo $num1 \* $num2 | bc`
        ;;
        4) result=`echo "scale=2; $num1 / $num2" | bc`
        ;;
        5) result=`echo $num1 % $num2 | bc`
        ;;
        *) echo "Invalid option"
        ;;
    esac

    echo "Result : $result"
done

This script uses a while loop to keep the calculator running until the user chooses to exit. It uses the read command to get user input for the operation choice and the two numbers. It then uses a case statement to perform the chosen operation. The bc command is used to perform the arithmetic. The scale=2 option in the division operation is used to get the result up to 2 decimal places.