String suffix removal (${var%pattern}) in Bash Scripting - Mini Project: Build & Apply

String suffix removal (${var%pattern})

📖 Scenario: You have a list of filenames with extensions. You want to get just the base names without the extensions.

🎯 Goal: Learn how to use the ${var%pattern} syntax in bash to remove suffixes from strings.

📋 What You'll Learn

Create a variable with a filename including an extension

Create a variable with the extension pattern to remove

Use ${var%pattern} to remove the extension from the filename

Print the filename without the extension

💡 Why This Matters

🌍 Real World

Removing file extensions is common when you want to process or rename files without their suffixes.

💼 Career

Shell scripting skills like string manipulation are useful for automation tasks in system administration and DevOps.

1

Create a variable with a filename

Create a variable called filename and set it to the string report.txt.

Bash Scripting

# Create a variable called filename with value 'report.txt'
# Your code here

Need a hint?

Use filename="report.txt" to assign the string.

2

Create a variable with the extension pattern

Create a variable called ext and set it to the string .txt.

Bash Scripting

filename="report.txt"
# Create a variable called ext with value '.txt'
# Your code here

Need a hint?

Use ext=".txt" to assign the extension pattern.

3

Remove the extension using ${var%pattern}

Create a variable called base that removes the suffix stored in ext from filename using ${filename%$ext}.

Bash Scripting

filename="report.txt"
ext=".txt"
# Remove the suffix stored in ext from filename and store in base
# Your code here

Need a hint?

Use base=${filename%$ext} to remove the suffix.

4

Print the filename without the extension

Print the value of base using echo.

Bash Scripting

filename="report.txt"
ext=".txt"
base=${filename%$ext}
# Print the base filename
# Your code here

Need a hint?

Use echo "$base" to display the result.