Calling functions in Bash Scripting - Mini Project: Build & Apply

Calling functions

📖 Scenario: You are writing a simple bash script to organize tasks into functions. Functions help you reuse code and keep your script clean.

🎯 Goal: Create a bash script with a function that prints a greeting message. Then call that function to show the message.

📋 What You'll Learn

Create a function named greet that prints the text Hello, welcome to bash scripting!

Call the function greet after its definition

💡 Why This Matters

🌍 Real World

Functions in bash scripts help organize tasks like backups, monitoring, or automation steps. Calling functions makes scripts easier to read and reuse.

💼 Career

Knowing how to write and call functions in bash is essential for system administrators, DevOps engineers, and anyone automating tasks on Linux or Unix systems.

1

Create the greet function

Write a bash function named greet that prints the exact text Hello, welcome to bash scripting! using echo. Use the syntax: greet() { ... }

Bash Scripting

# Define the greet function here
greet() {
    # Your code here
}

Need a hint?

Use echo inside the function to print the message.

2

Call the greet function

After the greet function definition, write a line to call the function by its name greet.

Bash Scripting

greet() {
    echo "Hello, welcome to bash scripting!"
}

# Call the greet function below
# Your code here

Need a hint?

Just write the function name greet on a new line to call it.

3

Add a comment explaining the function call

Add a comment line before the function call that says # Call the greet function.

Bash Scripting

greet() {
    echo "Hello, welcome to bash scripting!"
}

# Your comment here
# Your code here

Need a hint?

Comments start with # in bash scripts.

4

Run the script and show the output

Run the script and print the output. The output should be exactly Hello, welcome to bash scripting!

Bash Scripting

# Run the script and print the output
# Your code here

Need a hint?

Run the script in your terminal using bash scriptname.sh or ./scriptname.sh if executable.