Greeting Bash Script

Introduction

This Bash script is designed to take user input (name and age) and display a custom greeting based on the user’s age. The script demonstrates simple user interaction, input handling, and conditional logic in Bash, making it a great example of using basic Bash scripting commands.

Code Explanation

#!/bin/bash

read -p "Enter your name: " name

read -p "Enter your age: " age

echo "Hello, $name!"

if (( age < 18 )); then
    echo "You're a minor. Enjoy your youth!"
elif (( age >= 18 && age <= 65 )); then
    echo "You're an adult. Keep striving for your goals!"
else
    echo "You're a senior citizen. Wisdom comes with experience!"
fi

1. Script Header (#!/bin/bash): Defines the interpreter to use for the script, which is Bash.

2. Name Input: read -p "Enter your name: " name prompts the user to enter their name, storing it in the name variable.

3. Age Input: read -p "Enter your age: " age prompts the user to enter their age, storing it in the age variable.

4. Conditional Logic:

   • if (( age < 18 )): Checks if the age is less than 18 and displays a message for minors.

   • elif (( age >= 18 && age <= 65 )): Checks if the age is between 18 and 65, displaying an adult message.

   • else: Catches any age over 65 and displays a message for senior citizens.

Usage

1. Save the script as greeting.sh.

2. Make the script executable by running:

    chmod +x greeting.sh
   

3. Run the script:

    ./greeting.sh
   

Expected Output

Upon running, the script will prompt the user for their name and age, and then display a personalized greeting based on the age input. Here’s an example:

Enter your name: Aman
Enter your age: 21
Hello, Aman!
You're an adult. Keep striving for your goals!

Sample Outputs Based on Age

• If age < 18:

    Hello, [Name]!
    You're a minor. Enjoy your youth!
  

• If 18 <= age <= 65:

    Hello, [Name]!
    You're an adult. Keep striving for your goals!
  

• If age > 65:

    Hello, [Name]!
    You're a senior citizen. Wisdom comes with experience!
  

Conclusion

This script provides a straightforward example of user interaction and conditional logic in Bash. By prompting the user for their name and age, the script offers personalized greetings, highlighting the flexibility and power of Bash scripting for creating custom user experiences based on input.