Question

Mini Project

You are required to do this assignment on your own skills. No copying from other students are not allowed.

Write a menu driven Bash script using the guidelines given below.

Some of the commands and syntax may not be covered in lectures. Please refer other sources to understand syntax and commands you need to complete this assignment.

This program takes user input and to perform simple arithmetic operations such as addition, subtraction, multiplication and division of any two integers.

Part I Script should contain the following tasks:

1. Script file name: math.sh
2. Clear the screen.
3. Enter appropriate comments or descriptions
4. Ask the user to input a value for each arithmetic calculations; for example, 1 for addition and 2 for subtraction, so on.
5. Use a case statement condition and the user input, complete arithmetic operations.
6. Print the result on the screen.

Part II Test your program.

1. Give proper execute permission to run the script

Part III           Project Submission Information

There are two ways you can submit your mini project.

First option:

1. Include your screen shot of your script and the output of the script. Output for each operation should be included

Second Option:

1. Upload your script to the Blackboard

Resources: Lot resources and scripts are available on the Web.

Answer 1

Below is the code to above program

clear
echo "Menu"
echo "1. ADD"
echo "2. SUBSTRACT"
echo "3. MULTIPLY"
echo "4. DIVIDE"
echo "5. EXIT"
echo "Enter your choice: "
read choice
if [ "$choice" -eq 5 ]
then
echo "Exit.."
exit
fi
echo "Enter 1st number: "
read x
echo "Enter 2nd number: "
read y
case $choice in
1) z=$((x+y))
echo "addition is: $z"
;;
2) z=$((x-y))
echo "substraction is: $z"
;;
3) z=$((x*y))
echo "multiplication is: $z"
;;
4) z=$((x/y))
echo "division is: $z"
;;
5) echo "Exit.."
exit
;;
esac

The output of the above code is