Create a Script for Adding Two Numbers

Last Updated : 4 Feb, 2026

Bash scripting is a powerful way to automate tasks and perform various operations in a Linux environment. Here you will learn to create a simple Bash script that takes two numbers as input, adds them together, and displays the result. This serves as a basic introduction to scripting with Bash.

Script Creation:

Let's create a Bash script named add_numbers.sh

Script:

#!/bin/bash
# Simple script to add two numbers

# Ask the user for the first number
echo "Enter the first number:"
read num1

# Ask the user for the second number
echo "Enter the second number:"
read num2

# Calculate the sum
sum=$((num1 + num2))

# Display the result
echo "The sum of $num1 and $num2 is: $sum"
  • echo: Prints a message on the screen.
  • read: Gets input from the user and stores it in a variable.
  • $((num1 + num2)): Performs arithmetic addition.
  • $sum: Displays the value of the variable sum.
add_numbers_script
shell script of adding two numbers

To use this script:

  • Save it to a file, add_numbers.sh.
  • Make it executable:
chmod +x add_numbers.sh
  • Run it:
./add_numbers.sh

Output:

add_numbers_output
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