Linux distributions overview (Ubuntu, CentOS, Fedora) in Linux CLI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to check the Ubuntu version installed on your system.

Linux CLI

lsb_release [1]

Drag options to blanks, or click blank then click option'

A-a

B-l

C-v

D-h

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-v' which shows only the short release version, not full distribution info.

Using '-h' which shows help instead of version info.

The 'lsb_release -a' command shows detailed information about the Linux distribution, including the Ubuntu version.

2fill in blank

medium

Complete the command to list all installed packages on a CentOS system using yum.

Linux CLI

yum [1] installed

Drag options to blanks, or click blank then click option'

Asearch

Bshow

Cinfo

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'show' or 'info' which do not list installed packages.

Using 'search' which looks for packages but does not list installed ones.

The 'yum list installed' command lists all packages installed on a CentOS system.

3fill in blank

hard

Fix the error in the Fedora command to update all packages.

Linux CLI

dnf [1]

Drag options to blanks, or click blank then click option'

Ainstall

Bupgrade

Cupdate

Dremove

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'update' instead of 'upgrade'.

Using 'install' or 'remove' which do not upgrade packages.

The correct command to update all packages in Fedora is 'dnf upgrade'.

4fill in blank

hard

Fill both blanks to create a command that shows the Fedora release version.

Linux CLI

cat /etc/[1]-release | grep [2]

Drag options to blanks, or click blank then click option'

Afedora

BVERSION

CRELEASE

Dcentos

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'centos' instead of 'fedora' in the file name.

Using 'RELEASE' in grep which may not filter the version line.

The file '/etc/fedora-release' contains Fedora version info. Using grep 'VERSION' filters the version line.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps distribution names to their version files if the file exists.

Linux CLI

versions = {dist: f'/etc/[1]-release' for dist in ['ubuntu', 'centos', 'fedora'] if os.path.exists(f'/etc/[2]-release') and dist [3] 'fedora'}

Drag options to blanks, or click blank then click option'

Adist

C!=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' instead of '!=' which includes 'fedora' instead of excluding it.

Using a fixed string instead of 'dist' in file paths.

The comprehension uses 'dist' to build file paths and filters out 'fedora' with '!=' operator.