PrateekKumarSingh

$Timer = [System.Diagnostics.Stopwatch]::StartNew()
$maxThreads = 20

$RunSpacePool = [System.Management.Automation.Runspaces.RunspaceFactory]::CreateRunspacePool(1, $maxThreads )
$Jobs = New-Object System.Collections.ArrayList
$RunSpacePool.Open()


$Worker = {
    param($Item)

PrateekKumarSingh

AudioDeviceCmdlets
AutomatedLab
AutomatedLab.Common
AutomatedLabDefinition
AutomatedLabNotifications
AutomatedLabUnattended
AutomatedLabWorker
Az.Accounts
Az.Aks
Az.AnalysisServices

PrateekKumarSingh

# method 1
$a = 1..5
[array]::Reverse($a)
$a

# method 2
$a = 1..5
$a[$a.count..0]

PrateekKumarSingh

# Method 1 - Using Expand-Archive cmdlet
Expand-Archive -Path C:\Data\Compressed.zip -DestinationPath C:\Data\one -Verbose

# Method 2 - Using .Net ZipFile Class
Add-Type -Assembly "System.IO.Compression.Filesystem"
[System.IO.Compression.ZipFile]::ExtractToDirectory('C:\Data\Compressed.zip','C:\Data\two')

# Method 3 - Using Shell.Application COM object
$ZippedFilePath = "C:\Data\Compressed.zip"
$DestinationFolder = "C:\Data\three\"

PrateekKumarSingh

Function Malicious {
#Get current user context
  $CurrentUser = New-Object Security.Principal.WindowsPrincipal $([Security.Principal.WindowsIdentity]::GetCurrent())
  
  #Check user is running the script is member of Administrator Group
  if($CurrentUser.IsInRole([Security.Principal.WindowsBuiltinRole]::Administrator))
  {
       Write-host "Script is running with Administrator privileges!"
  }
  else

PrateekKumarSingh

# Method 1 - Using PSTypeNames 
$Alpha = [PSCustomObject]@{a=1; b=2}
$Alpha.pstypenames.Clear()
$Alpha.pstypenames.Add('Alpha')
$Alpha | Get-Member

# Method 2 - Using PSObject Adapter
$Beta = Get-Service BITS
$Beta.PSObject.TypeNames.Insert(0,'Beta')
$Beta | Get-Member

PrateekKumarSingh

$URLs = "https://aka.ms/wsl-ubuntu-1804" ,"https://aka.ms/wsl-ubuntu-1804-arm" ,"https://aka.ms/wsl-ubuntu-1604" ,"https://aka.ms/wsl-debian-gnulinux" ,"https://aka.ms/wsl-kali-linux" ,"https://aka.ms/wsl-opensuse-42" ,"https://aka.ms/wsl-sles-12"

$ProgressPreference = 'SilentlyContinue'
$ErrorActionPreference = 'Stop'
Foreach($URL in $URLs){
    $Filename = "$(Split-Path $URL -Leaf).appx"
    Write-Host "Downloading: $Filename" -Foreground Yellow -NoNewline
    try{
        Invoke-WebRequest -Uri $URL -OutFile $Filename -UseBasicParsing
        Add-AppxPackage -Path $Filename

PrateekKumarSingh

$URL = 'https://aka.ms/wsl-ubuntu-1804'
$Filename = "$(Split-Path $URL -Leaf).appx"
$ProgressPreference = 'SilentlyContinue'
Invoke-WebRequest -Uri $URL -OutFile $Filename -UseBasicParsing
Invoke-Item $FileName

PrateekKumarSingh

$Error.count # empty automatic variable

# throwing an error when file doesn't exists
Get-Item C:\Data\nosuchfile.txt
$Error.count # one error record logged

# supressing the error
Get-Item C:\Data\nosuchfile.txt -ErrorAction SilentlyContinue
$Error.count # but still capturing the error

PrateekKumarSingh

Function Get-FolderSize {
    param(
        $Path = (Get-Location),
        $Top = 10,
        [Switch] $ShowErrors
    )
    $Start = Get-Date
    $FSO = New-Object -ComObject Scripting.FileSystemObject -ErrorAction Stop
    $Folders = Get-ChildItem $Path -Recurse -ea Silentlycontinue -ErrorVariable +err | Where-Object { $_.PSIscontainer } | Select-Object -ExpandProperty fullname