Accessing variables ($var and ${var}) in Bash Scripting - Mini Project: Build & Apply

Accessing variables ($var and ${var}) in Bash scripting

📖 Scenario: You are writing a simple bash script to greet users and show their favorite fruit. You want to learn how to use variables correctly in bash scripts.

🎯 Goal: Build a bash script that stores a user's name and favorite fruit in variables, then prints a greeting using both $var and ${var} syntax.

📋 What You'll Learn

Create variables with exact names and values

Use both $var and ${var} syntax to access variables

Print the greeting message exactly as instructed

💡 Why This Matters

🌍 Real World

Using variables is essential in bash scripts to store and reuse information like user input, file names, or configuration values.

💼 Career

Knowing how to access variables correctly is a fundamental skill for system administrators, DevOps engineers, and anyone automating tasks with shell scripts.

1

Create variables for name and fruit

Create a variable called name and set it to "Alice". Create another variable called fruit and set it to "apple".

Bash Scripting

# Create variables 'name' and 'fruit' with given values
# Your code here

Need a hint?

Use name="Alice" and fruit="apple" to create the variables.

2

Create a greeting message using $var syntax

Create a variable called greeting1 and set it to the string Hello, $name! Your favorite fruit is $fruit. using the $var syntax to access the variables.

Bash Scripting

name="Alice"
fruit="apple"
# Create 'greeting1' using $var syntax
# Your code here

Need a hint?

Use double quotes and $name, $fruit inside the string.

3

Create a greeting message using ${var} syntax

Create a variable called greeting2 and set it to the string Hello, ${name}! Your favorite fruit is ${fruit}. using the ${var} syntax to access the variables.

Bash Scripting

name="Alice"
fruit="apple"
greeting1="Hello, $name! Your favorite fruit is $fruit."
# Create 'greeting2' using ${var} syntax
# Your code here

Need a hint?

Use double quotes and ${name}, ${fruit} inside the string.

4

Print both greeting messages

Print the variables greeting1 and greeting2 each on its own line using echo.

Bash Scripting

name="Alice"
fruit="apple"
greeting1="Hello, $name! Your favorite fruit is $fruit."
greeting2="Hello, ${name}! Your favorite fruit is ${fruit}."
# Print greeting1 and greeting2
# Your code here

Need a hint?

Use echo "$greeting1" and echo "$greeting2" to print the messages.