Why cmdlets are the building blocks in PowerShell - See It in Action

Why cmdlets are the building blocks

📖 Scenario: You are learning how PowerShell works by understanding its core components called cmdlets. Cmdlets are small, single-function commands that you can combine to automate tasks on your computer.

🎯 Goal: Build a simple PowerShell script that uses cmdlets to list files in a folder, filter them by size, and display the results. This will show how cmdlets work together as building blocks.

📋 What You'll Learn

Create a variable with a folder path

Create a size threshold variable

Use Get-ChildItem cmdlet to get files

Use Where-Object cmdlet to filter files by size

Use ForEach-Object cmdlet to display file names

💡 Why This Matters

🌍 Real World

System administrators often use cmdlets to quickly find and manage files based on size or other properties.

💼 Career

Knowing how to combine cmdlets is essential for automating tasks and managing Windows environments efficiently.

1

Set the folder path

Create a variable called $folderPath and set it to "C:\Users\Public\Documents".

PowerShell

# Your code here

Need a hint?

Use = to assign the folder path string to the variable $folderPath.

2

Set the size threshold

Create a variable called $sizeThreshold and set it to 1000000 (which means 1,000,000 bytes or about 1 MB).

PowerShell

$folderPath = "C:\Users\Public\Documents"
# Your code here

Need a hint?

Assign the number 1000000 to the variable $sizeThreshold.

3

Get and filter files by size

Use Get-ChildItem -Path $folderPath -File to get files, then pipe | to Where-Object to keep only files where Length is greater than $sizeThreshold. Store the result in $largeFiles.

PowerShell

$folderPath = "C:\Users\Public\Documents"
$sizeThreshold = 1000000
# Your code here

Need a hint?

Use Get-ChildItem with -File to get files only. Then use Where-Object with { $_.Length -gt $sizeThreshold } to filter.

4

Display the large file names

Use ForEach-Object to print the Name of each file in $largeFiles with Write-Output.

PowerShell

$folderPath = "C:\Users\Public\Documents"
$sizeThreshold = 1000000
$largeFiles = Get-ChildItem -Path $folderPath -File | Where-Object { $_.Length -gt $sizeThreshold }
# Your code here

Need a hint?

Use ForEach-Object to loop through $largeFiles and print each file's Name.