Bash shell script to swap two numbers

Given two numbers and the task is to swap them using the third variable.

Examples:

Input: first = 2, second = 4
Output: first = 4, second = 2

Input: first = 5, second = 7
Output: first = 7, second = 5

Approach:

1. Store the value of the first number into a temp variable.
2. Store the value of the second number in the first number.
3. Store the value of temp into the second variable.

# !/bin/bash

# Program to swap two numbers

# Static input of the
# number
first=5
second=10

temp=$first
first=$second
second=$temp

echo "After swapping, numbers are:"
echo "first = $first, second = $second"

Output:

After swapping, numbers are:
first = 10, second = 5

How to execute the bash files?

1. Write the bash code into a file and save that file with .sh extension i.e. filename.sh
2. Open terminal and execute the file using below command:

   ./filename.sh
   

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