Environment variables in PowerShell - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get the value of the PATH environment variable.

PowerShell

Write-Output $Env:[1]

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

AHOME

BTEMP

CUSER

DPATH

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase variable names like $Env:path which is case-sensitive.

Trying to access environment variables without $Env: prefix.

The $Env:PATH variable holds the system PATH environment variable.

2fill in blank

medium

Complete the code to set a new environment variable named MY_VAR with value 'Hello'.

PowerShell

$Env:[1] = '[2]'

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

AMY_VAR

BHello

CTEMP

DUSER

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect variable names like PATH instead of MY_VAR.

Not using quotes around string values.

To create or update an environment variable, assign a value to $Env:VariableName. Here, MY_VAR is the variable name and 'Hello' is the value.

3fill in blank

hard

Fix the error in the code to correctly append a directory to the PATH environment variable.

PowerShell

$Env:PATH = $Env:PATH + ';' + [1]

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

A$NewFolder

BNewFolder

C'C:\NewFolder'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a variable name that is not defined.

Including quotes inside the concatenation causing literal quotes in PATH.

To append a directory path, use the full path string with quotes inside the concatenation. The path must be a string like 'C:\NewFolder'.

4fill in blank

hard

Fill both blanks to check if the environment variable MY_VAR exists and print its value if it does.

PowerShell

if ($Env:[1]) { Write-Output $Env:[2] } else { Write-Output 'Variable not found' }

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

AMY_VAR

BPATH

CTEMP

DUSER

Attempts:

3 left

💡 Hint

Common Mistakes

Checking one variable but printing another.

Using variable names that do not exist.

Checking $Env:MY_VAR tests if the variable exists. Printing the same variable outputs its value.

5fill in blank

hard

Fill all three blanks to create a new environment variable, check if it exists, and print a message with its value.

PowerShell

$Env:[1] = '[2]'
if ($Env:[3]) { Write-Output "Value is $Env:[3]" } else { Write-Output 'Not set' }

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

AMY_VAR

BHelloWorld

DPATH

Attempts:

3 left

💡 Hint

Common Mistakes

Using different variable names for setting and checking.

Forgetting to quote the string value.

First, set $Env:MY_VAR to 'HelloWorld'. Then check if $Env:MY_VAR exists and print its value.