Installing, updating, removing packages in Linux CLI - Practice Problems & Coding Challenges

Challenge - 5 Problems

💻 Command Output

intermediate

What is the output of updating package lists with apt?

You run the command sudo apt update on a Debian-based system. What is the expected output shown?

Linux CLI

sudo apt update

A Displays the current kernel version

B Installs all available package updates automatically

C Removes unused packages from the system

D Lists package sources and shows 'Reading package lists... Done' with no errors

💡 Hint

Think about what 'apt update' does before installing or upgrading.

The 'apt update' command refreshes the package lists from repositories but does not install or remove packages.

💻 Command Output

intermediate

What happens when you run 'yum remove' on a package?

On a Red Hat-based system, you run sudo yum remove httpd. What is the expected result?

Linux CLI

sudo yum remove httpd

A Lists all installed packages including httpd

B Updates the httpd package to the latest version

C Uninstalls the httpd package and its dependencies no longer needed

D Installs the httpd package if missing

💡 Hint

Removing a package deletes it from the system.

'yum remove' deletes the specified package and any dependencies that are no longer required.

📝 Syntax

advanced

Which command correctly installs a package with dnf?

Choose the correct command to install the package 'nano' using dnf on Fedora.

A sudo dnf install nano

B sudo dnf get nano

C sudo dnf update nano

D sudo dnf remove nano

💡 Hint

The command to add a package is 'install'.

'dnf install' is the correct syntax to add a package. 'get' is invalid, 'update' upgrades, 'remove' deletes.

💻 Command Output

advanced

What message is shown when removing a non-existent package with apt?

You run sudo apt remove nonexistent-package. What is the expected output?

Linux CLI

sudo apt remove nonexistent-package

A Package 'nonexistent-package' is not installed, so not removed

B Package nonexistent-package removed successfully

C Reading package lists... Done

D All packages are up to date

💡 Hint

apt remove checks if the package is installed on the system.

apt reports 'Package 'nonexistent-package' is not installed, so not removed' when attempting to remove a package that is not installed.

🚀 Application

expert

How many packages are upgraded after running 'sudo apt upgrade'?

After running sudo apt update and then sudo apt upgrade, the output shows 5 packages will be upgraded. What is the number of packages actually upgraded after the upgrade completes successfully?

Linux CLI

sudo apt update && sudo apt upgrade -y

A 0

B 5

C Depends on user confirmation

D All installed packages

💡 Hint

The upgrade command installs all listed upgrades unless interrupted.

If 5 packages are listed to upgrade and the upgrade runs with automatic yes, all 5 are upgraded.