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Linux shell script program to add two numbers

Here, we are going to learn how to add two numbers in Linux shell script?
Submitted by Nidhi, on February 14, 2021

Problem Solution:

Here, we will create a shell script program to add two integer numbers and then print the sum of numbers on the console screen.

Program/Source Code:

The source code to create a Linux shell script program to add two numbers is given below. The given program is compiled and executed successfully on Ubuntu 20.04.

#!/bin/bash

# Program name: "add_two_num.sh"
# Shell script program to add two numbers.

num1=10
num2=20

num3=`expr $num1 + $num2`

echo "Sum is: $num3"

Now, we will save the shell script program with the "add_two_num.sh" name.

Output:

$ sh add_two_num.sh 
Sum is: 30

Explanation:

In the above program, we created two variables num1, num2 that are initialized with 10 and 20 respectively. Here, we used the expr command to add two values of variables and then print the sum of two numbers on the console screen.

Linux shell script programs »

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