$Error automatic variable in PowerShell - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to display the most recent error stored in the $Error automatic variable.

PowerShell

Write-Output $Error[1]

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

A[1]

B.Count

C[0]

D.Clear()

Attempts:

3 left

💡 Hint

Common Mistakes

Using .Count instead of an index to access an error.

Using [1] which accesses the second error, not the most recent.

Trying to clear errors instead of displaying them.

The $Error variable stores errors in a collection, with the most recent error at index 0. Using $Error[0] accesses the latest error.

2fill in blank

medium

Complete the code to clear all errors from the $Error automatic variable.

PowerShell

$Error[1]()

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A.Remove

B.Clear

C.Reset

D.Delete

Attempts:

3 left

💡 Hint

Common Mistakes

Using .Remove() which requires an argument and removes a specific item.

Using .Reset() or .Delete() which are not valid methods for $Error.

The .Clear() method empties the $Error collection, removing all stored errors.

3fill in blank

hard

Fix the error in the code to display the error message of the most recent error.

PowerShell

Write-Output $Error[1].Exception.Message

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

A[0]

B.Count

C[1]

D.Clear()

Attempts:

3 left

💡 Hint

Common Mistakes

Using .Count which is a number, not an error object.

Using [1] which accesses the second error, not the most recent.

Trying to call .Clear() which clears errors instead of displaying.

To get the message of the most recent error, access $Error[0].Exception.Message. Using [0] gets the latest error object.

4fill in blank

hard

Fill both blanks to check if there are any errors and display the count.

PowerShell

if ($Error[1] -gt 0) { Write-Output "Errors: $($Error[2])" }

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

A.Count

B[0]

C.Length

D[1]

Attempts:

3 left

💡 Hint

Common Mistakes

Using [0] or [1] which access specific errors, not the count.

Using .Length which is similar but .Count is preferred for collections.

The .Count property gives the number of errors in $Error. Using it in both places checks if errors exist and shows how many.

5fill in blank

hard

Fill all three blanks to create a filtered list of error messages containing the word 'timeout'.

PowerShell

$timeoutErrors = $Error | Where-Object { $_.Exception.Message[1] '*timeout*' } | ForEach-Object { $_.Exception.[2] } | Sort-Object [3]

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

A-like

BMessage

CException.Message

DLength

Attempts:

3 left

💡 Hint

Common Mistakes

Using Exception.Message which is nested and invalid here.

Using -eq instead of -like which looks for exact matches.

Sorting by Exception.Message which is not a direct property.

Use -like to filter messages containing 'timeout'. Extract the Message property from $_.Exception, then sort by Length to order by message size.