useradd and userdel in Linux CLI - Mini Project: Build & Apply

Managing Users with useradd and userdel Commands

📖 Scenario: You are a system administrator managing users on a Linux server. You need to add new users and remove users safely using command-line tools.

🎯 Goal: Learn how to create new users with useradd and delete users with userdel commands through a guided script.

📋 What You'll Learn

Use the useradd command to create users

Use the userdel command to delete users

Use variables to store usernames

Print confirmation messages after each operation

💡 Why This Matters

🌍 Real World

System administrators often need to add and remove users on Linux servers to manage access and security.

💼 Career

Knowing how to use user management commands like useradd and userdel is essential for Linux system administration roles.

1

Create a variable for the new username

Create a variable called new_user and set it to the exact string testuser.

Linux CLI

# Create a variable called new_user and set it to 'testuser'
# Your code here

Need a hint?

Use new_user='testuser' to assign the username.

2

Create a variable for the username to delete

Create a variable called del_user and set it to the exact string olduser.

Linux CLI

new_user='testuser'
# Create a variable called del_user and set it to 'olduser'
# Your code here

Need a hint?

Use del_user='olduser' to assign the username to delete.

3

Add the new user and delete the old user

Use the useradd command with $new_user to add the new user, and use the userdel command with $del_user to delete the old user. Write both commands on separate lines.

Linux CLI

new_user='testuser'
del_user='olduser'
# Add new user with useradd and delete old user with userdel
# Your code here

Need a hint?

Use useradd "$new_user" and userdel "$del_user" commands.

4

Print confirmation messages

Print the exact messages User testuser added successfully. and User olduser deleted successfully. on separate lines using echo commands.

Linux CLI

new_user='testuser'
del_user='olduser'
useradd "$new_user"
userdel "$del_user"
# Print confirmation messages
# Your code here

Need a hint?

Use echo "User testuser added successfully." and echo "User olduser deleted successfully.".