Environment variables in PowerShell - Mini Project: Build & Apply

Environment variables

📖 Scenario: You are writing a PowerShell script to manage environment variables for a simple application setup. Environment variables store important settings like paths or configuration values that your script can use.

🎯 Goal: Build a PowerShell script that creates a new environment variable, reads an existing environment variable, and then displays the values.

📋 What You'll Learn

Create a new environment variable with a specific name and value

Read the value of an existing environment variable

Display both environment variable values using Write-Output

💡 Why This Matters

🌍 Real World

Managing environment variables is common when setting up software, configuring scripts, or customizing user environments.

💼 Career

Many IT, DevOps, and scripting jobs require working with environment variables to automate setups and deployments.

1

Create a new environment variable

Create a new environment variable called MyAppPath and set its value to C:\MyApp\bin using PowerShell syntax.

PowerShell

# Create the environment variable MyAppPath
# Your code here

Need a hint?

Use $env:VariableName = 'Value' to set environment variables in PowerShell.

2

Read an existing environment variable

Create a variable called systemPath and assign it the value of the existing environment variable PATH using PowerShell syntax.

PowerShell

$env:MyAppPath = 'C:\MyApp\bin'
# Assign the PATH environment variable value to systemPath
# Your code here

Need a hint?

Use $variable = $env:VariableName to read environment variables.

3

Display the environment variable values

Use Write-Output to display the values of MyAppPath and systemPath variables on separate lines.

PowerShell

$env:MyAppPath = 'C:\MyApp\bin'
$systemPath = $env:PATH
# Display MyAppPath and systemPath values
# Your code here

Need a hint?

Use Write-Output $variable to print values in PowerShell.

4

Run the script and check output

Run the script to print the values of MyAppPath and systemPath. The output should show C:\MyApp\bin on the first line and the full PATH value on the second line.

PowerShell

$env:MyAppPath = 'C:\MyApp\bin'
$systemPath = $env:PATH
Write-Output $env:MyAppPath
Write-Output $systemPath
# Run the script and check output

Need a hint?

The first line of output must be exactly C:\MyApp\bin. The second line will be your system's PATH value.