Compare-Object for differences in PowerShell - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to compare two arrays and show differences.

PowerShell

$array1 = @(1, 2, 3)
$array2 = @(2, 3, 4)
Compare-Object $array1 [1] $array2

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

A-DifferenceObject

B-InputObject

C-CompareObject

D-ReferenceObject

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-ReferenceObject' instead of '-DifferenceObject' causes errors.

The -DifferenceObject parameter specifies the second set to compare against the first.

2fill in blank

medium

Complete the code to show only differences without side indicators.

PowerShell

Compare-Object -ReferenceObject $list1 -DifferenceObject $list2 [1]

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

A-IncludeEqual

B-ExcludeDifferent

C-PassThru

D-NoSideIndicator

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-PassThru' shows objects but keeps side indicators.

The -NoSideIndicator switch hides the side indicator, showing only the differing values.

3fill in blank

hard

Fix the error in the code to compare two files and show differences.

PowerShell

$file1 = Get-Content file1.txt
$file2 = Get-Content file2.txt
Compare-Object $file1 [1] $file2

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

A-ReferenceObject

B-DifferenceObject

C-InputObject

D-CompareObject

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-ReferenceObject' for the second file causes wrong comparison.

The second file content must be passed with -DifferenceObject to compare properly.

4fill in blank

hard

Fill both blanks to compare two lists and show only items unique to the first list.

PowerShell

Compare-Object -ReferenceObject $listA -DifferenceObject $listB [1] [2]

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

A-PassThru

B-IncludeEqual

C-ExcludeDifferent

D-SideIndicator '<='

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-IncludeEqual' shows equal items, not differences.

-PassThru outputs the differing objects themselves, and -SideIndicator '<=' filters to show only items unique to the first list.

5fill in blank

hard

Fill all three blanks to compare two arrays and output only items unique to either list.

PowerShell

$result = Compare-Object [1] [2] [3]

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

A-ReferenceObject $arrayX

B-DifferenceObject $arrayY

C-PassThru

D-IncludeEqual

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-IncludeEqual' includes equal items, not just differences.

Use -ReferenceObject and -DifferenceObject to specify arrays, and -PassThru to output only the differing items.