Find Membership Count of all AD Groups in OU

I was working on an application migration recently, and wanted to see how many users/computers were in each application Active Directory (AD) group in a specified Organisational Unit (OU):

$Groups = Get-ADGroup -Properties * -Filter * -SearchBase "OU=Applications,DC=alkane,DC=co,DC=uk" 
Foreach($group In $groups)
    $groupname = $group.Name 
    $groupdescription = $group.Description
    $groupdn = $group.DistinguishedName
    $groupcount = $group.member.count


Charting with PowerShell

This post is heavily plagiarised from here.  But sometimes I see an interesting nugget of code and like to make sure I never lose it!

I’ve made a few tweaks from the aforementioned article, but I could see me using this one day to run reports on a scheduled task (connecting to SQL server etc) and emailing some pretty charts to management teams.  Here’s the code:

# load the appropriate assemblies 

#create form
$Form = New-Object Windows.Forms.Form 
$Form.Text = "PowerShell Chart" 
$Form.Width = 600 
$Form.Height = 600 

#create chart  
$Chart = New-object System.Windows.Forms.DataVisualization.Charting.Chart 
$Chart.Width = 500 
$Chart.Height = 400 
$Chart.Left = 40 
$Chart.Top = 30

#define font (otherwise when we export the chart as an image, the default text isn't legible)
$font = new-object system.drawing.font("calibri",12,[system.drawing.fontstyle]::Regular)

#create a chartarea to draw on and add to chart 
$ChartArea = New-Object System.Windows.Forms.DataVisualization.Charting.ChartArea 

#add data to chart 
$Cities = @{London=7556900; Berlin=3429900; Madrid=3213271; Rome=2726539; Paris=2188500} 
$Chart.Series["Data"].Points.DataBindXY($Cities.Keys, $Cities.Values)

#display the chart on a form 
$Chart.Anchor = [System.Windows.Forms.AnchorStyles]::Bottom -bor [System.Windows.Forms.AnchorStyles]::Right -bor 
                [System.Windows.Forms.AnchorStyles]::Top -bor [System.Windows.Forms.AnchorStyles]::Left 

#add title and axes labels 
[void]$Chart.Titles.Add("Top 5 European Cities by Population") 
$ChartArea.AxisX.Title = "European Cities" 
$ChartArea.AxisY.Title = "Population"

#find point with max/min values and change their colour 
$maxValuePoint = $Chart.Series["Data"].Points.FindMaxByValue() 
$maxValuePoint.Color = [System.Drawing.Color]::Red
$minValuePoint = $Chart.Series["Data"].Points.FindMinByValue() 
$minValuePoint.Color = [System.Drawing.Color]::Green

#change chart area colour 
$Chart.BackColor = [System.Drawing.Color]::Transparent

#make bars into 3d cylinders 
$Chart.Series["Data"]["DrawingStyle"] = "Cylinder"

#define fonts for chart
$Chart.chartAreas[0].AxisX.LabelStyle.Font = $font
$Chart.chartAreas[0].AxisY.LabelStyle.Font = $font
$Chart.Titles[0].font = $font
$ChartArea.AxisX.Titlefont = $font
$ChartArea.AxisY.Titlefont = $font

#add a save button 
$SaveButton = New-Object Windows.Forms.Button 
$SaveButton.Text = "Save" 
$SaveButton.Top = 500 
$SaveButton.Left = 450 
$SaveButton.Anchor = [System.Windows.Forms.AnchorStyles]::Bottom -bor [System.Windows.Forms.AnchorStyles]::Right 
$SaveButton.add_click({$Chart.SaveImage("c:\temp\Chart.png", "PNG")})

#save chart to file 
$Chart.SaveImage($Env:USERPROFILE + "\Desktop\Chart.png", "PNG")

#show form


PowerShell, Selenium and Browser Automation

Selenium is a portable software-testing framework for web applications.  It’s pretty cool (in a geeky way).  It’s primarily used to test web applications, but in this instance we’re using it to launch Internet Explorer, load a web-based helpdesk dashboard on the intranet, log into it and click a few buttons to customise the view.

You’ll need to download IEDriverServer.exe.  Go to this location:

Choose the folder for the most recent version, and download IEDriverServer_Win32_[version].zip

Then download Selenium.WebDriver Nuget package from here:

and Selenium.Support Nuget package from here:

Rename the extensions of each file from .nupkg to .zip, and extract them as you would normally.  If you then look in the Lib folder of each archive you will find:

WebDriver.dll and WebDriver.Support.dll.

An Example of Browser Automation

Thi example demonstrates Internet Explorer browser automation since it’s probably the most prevalent browser in corporate environments.  However Selenium does have libraries for Firefox and Chrome too.

So for this example, put IEDriverServer.exe, WebDriver.dll, WebDriver.Support.dll and this PS1 file all in the same folder.  Read the inline comments in the script for an explanation.  To get the website element IDs you’ll need to use the DOM explorer of the browser, but I won’t go into detail of how to do that here.

#add references to the Selenium DLLs 
$WebDriverPath = Resolve-Path "$PSScriptRoot\WebDriver.dll"
#I unblock it because when you download a DLL from a remote source it is often blocked by default
Unblock-File $WebDriverPath
Add-Type -Path $WebDriverPath

$WebDriverSupportPath = Resolve-Path "$PSScriptRoot\WebDriver.Support.dll"
Unblock-File $WebDriverSupportPath
Add-Type -Path $WebDriverSupportPath

#before we start, we must ensure all zones are running either in protected mode, or not.  They need to all be the same.
#(we might be able to negate the requirement for some of these using InternetExplorerOptions.IntroduceInstabilityByIgnoringProtectedModeSettings)

#set protected
New-ItemProperty "hkcu:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0" -Name "2500" -Value 0 -PropertyType DWORD -Force | Out-Null
New-ItemProperty "hkcu:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1" -Name "2500" -Value 0 -PropertyType DWORD -Force | Out-Null
New-ItemProperty "hkcu:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2" -Name "2500" -Value 0 -PropertyType DWORD -Force | Out-Null
New-ItemProperty "hkcu:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3" -Name "2500" -Value 0 -PropertyType DWORD -Force | Out-Null
New-ItemProperty "hkcu:\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4" -Name "2500" -Value 0 -PropertyType DWORD -Force | Out-Null

#fix to run in kiosk mode (to use ForceCreateProcessApi this must be 0. ForceCreateProcessApi is required to use BrowserCommandLineArguments)
New-ItemProperty "hkcu:\Software\Microsoft\Internet Explorer\Main" -Name "TabProcGrowth" -Value 0 -PropertyType DWORD -Force | Out-Null

#Set zoom 100%.  Again, we can probably use InternetExplorerOptions.IgnoreZoomSetting as an alternative
New-ItemProperty "hkcu:\Software\Microsoft\Internet Explorer\Zoom" -Name "ZoomFactor" -Value 50000 -PropertyType DWORD -Force | Out-Null

#can pass this stuff in when we instantiate driver if needs be (if we want a chromeless browser for example)
$seleniumOptions = New-Object OpenQA.Selenium.IE.InternetExplorerOptions
#open this URL when Internet Explorer launches
$seleniumOptions.InitialBrowserUrl = "https://localhost:8080";
#we require this option to run in kiosk mode
$seleniumOptions.ForceCreateProcessApi = $true
#open Internet Explorer in kiosk mode
$seleniumOptions.BrowserCommandLineArguments = "-k"
#untested - ignore zoom options, negating the registry fix above
#$seleniumOptions.IgnoreZoomSetting = $true

#now we create a default service so we can run Selenium without the black debug command prompt appearing
#pre-PowerShell 5 we can do it like so
New-Variable -Name IEDS -Value ([OpenQA.Selenium.IE.InternetExplorerDriverService]) -Force
$defaultservice = $IEDS::CreateDefaultService()

#PowerShell 5 we can do it like so
#$defaultservice = [OpenQA.Selenium.IE.InternetExplorerDriverService]::CreateDefaultService()

#hide command prompt
$defaultservice.HideCommandPromptWindow = $true;

#provide our default service and selenium options to the Internett Explorer driver (calling this opens the IE session)
$seleniumDriver = New-Object OpenQA.Selenium.IE.InternetExplorerDriver -ArgumentList @($defaultservice, $seleniumOptions)

#now we start clicking elements on the web page.  We do this by finding the ID of the element we want to interact with.

#enter a username into login prompt
$seleniumWait = New-Object -TypeName OpenQA.Selenium.Support.UI.WebDriverWait($seleniumDriver, (New-TimeSpan -Seconds 10))

#enter a password into login prompt
$seleniumWait = New-Object -TypeName OpenQA.Selenium.Support.UI.WebDriverWait($seleniumDriver, (New-TimeSpan -Seconds 10))

#click 'login' button
$seleniumWait = New-Object -TypeName OpenQA.Selenium.Support.UI.WebDriverWait($seleniumDriver, (New-TimeSpan -Seconds 10))

#when logged in, click another button
$seleniumWait = New-Object -TypeName OpenQA.Selenium.Support.UI.WebDriverWait($seleniumDriver, (New-TimeSpan -Seconds 10))

#we don't close it in this instance because we want to keep the browser open as a dashboard view


Invoke-Sqlcmd returning unwanted columns such as RowError, HasErrors

I’ve been performing some SQL queries recently using PowerShell and Invoke-SqlCmd.  Here is a simple example of returning a list of devices (a single column of data) from a database:

Invoke-Sqlcmd -ServerInstance "AlkaneSQLInstance" -Database "AlkaneSQLDatabase" -Query "SELECT Device FROM Devices"

Of course I pipe this into Export-CSV like so:

Invoke-Sqlcmd -ServerInstance "AlkaneSQLInstance" -Database "AlkaneSQLDatabase" -Query "SELECT Device FROM Devices" | Export-Csv -NoTypeInformation -Path "C:\Temp\Alkane.csv"

When we read the exported data in the CSV we expect one column of data called ‘Device’.  However, instead we can also see columns called RowError, HasErrors and others!  And whilst I’m not sure why these appear, we can omit them like so:

Invoke-Sqlcmd -ServerInstance "AlkaneSQLInstance" -Database "AlkaneSQLDatabase" -Query "SELECT Device FROM Devices" | Select * -ExcludeProperty RowError, RowState, Table, ItemArray, HasErrors

and of course if we wanted to pipe this into a CSV we can do so like this:

Invoke-Sqlcmd -ServerInstance "AlkaneSQLInstance" -Database "AlkaneSQLDatabase" -Query "SELECT Device FROM Devices" | Select * -ExcludeProperty RowError, RowState, Table, ItemArray, HasErrors | Export-Csv -NoTypeInformation -Path "C:\Temp\Alkane.csv"

And voila.  We only get the columns of data that we asked for!

Manipulate Column Data with Select-Object and PowerShell

A couple of days ago I wanted to check which products were installed on a computer using PowerShell.  And throughout my journey I discovered how we can dynamically maniuplate column data and format the output.  Take this basic example where we query the ‘Uninstall’ registry key and output the registry data for displayname, displayversion, installdate:

gci -recurse HKLM:Software\Microsoft\Windows\CurrentVersion\Uninstall | get-itemproperty | sort displayname | select-object displayname, displayversion, installdate

But what if we wanted to join/concatenate the displayname and displayversion columns into one column?  Or what if we wanted to give the column a custom name?  We can do so like his:

gci -recurse HKLM:Software\Microsoft\Windows\CurrentVersion\Uninstall | get-itemproperty | sort displayname | select-object @{Label='Name and Version'; Expression={$_.displayname + " and the version is " + $_.displayversion}}, installdate

So we’ve joined the displayname and displayversion columns into one column called ‘Name and Version’.  Great.  Now by default the installdate registry data is stored in the yyyyMMdd format, or,  as an example 20180807.

This isn’t very readable.  So we can also manipulate this format (ok, we don’t do any casting as a date in this example – just basic string manipulation) and call the column ‘Formatted Date’ like so:

gci -recurse HKLM:Software\Microsoft\Windows\CurrentVersion\Uninstall | get-itemproperty | sort displayname | select-object @{Label='Name and Version'; Expression={$_.displayname + " " + $_.displayversion}}, @{Label='Formatted Date'; Expression={$_.installdate.substring(6,2) + "/" + $_.installdate.substring(4,2) + "/" + $_.installdate.substring(2,2)}}

This was quite a crude example, but hopefully it demonstrates how we can manipulate column data dynamically using PowerShell.

Move or Copy AD users

This is a simple PowerShell script to either copy AD users or move AD users from one AD group to another:

Move AD Users

$sourceADGroupName = "example 1"
$targetADGroupName = "example 2"

Get-ADGroupMember $sourceADGroupName | ForEach-Object {
  Add-ADGroupMember -Identity $targetADGroupName -Members $_ -Confirm:$false
  Remove-ADGroupMember -Identity $sourceADGroupName -Members $_ -Confirm:$false

Copy AD Users

$sourceADGroupName = "example 1"
$targetADGroupName = "example 2"

Get-ADGroupMember $sourceADGroupName | ForEach-Object {
  Add-ADGroupMember -Identity $targetADGroupName -Members $_ -Confirm:$false


Install and Uninstall an MSI using PowerShell

This is an example of how to install and uninstall an MSI using PowerShell.

It passes in a string array as the msiexec arguments. So you can add more arguments as you see fit. Pay close attention to the quotes around the file paths (in case they contain spaces).

$MSIInstallArguments = @(
Start-Process "msiexec.exe" -ArgumentList $MSIInstallArguments -Wait -NoNewWindow 

$MSIUninstallArguments = @(
Start-Process "msiexec.exe" -ArgumentList $MSIUninstallArguments -Wait -NoNewWindow


Using a Hashtable for Key/Value pairs

This is a simple example of how we can use a hashtable to store and update key/value pairs:

#create hashtable
$states = @{}

#add a key/value pair
$states.Add("ExampleKey", "ExampleValue1")

#two ways of getting the value
write-host $states.Get_Item("ExampleKey")
write-host $states.ExampleKey

#update the value for the key 'ExampleKey'
$states.Set_Item("ExampleKey", "ExampleValue2")

#two ways of getting the value
write-host $states.Get_Item("ExampleKey")
write-host $states.ExampleKey


Detect if a Computer is a Member of a Specified AD Group

Detect if the Current User is a Member of a Specified AD Group

This script will detect if the current user is a member of a specified AD Group using the [adsiSearcher] type accelerator:

#remember that this is used as a regular expression (using -match), so escape any brackets etc with a back slash
$ADGroup = "Example_AD_Group"
$machineName = "AlkaneMachine"

#check if computeris a member of the group
$ADGroupCount = (([ADSISearcher] "(&(objectCategory=computer)(objectClass=computer)(cn=$machineName))").FindOne().Properties.memberof -match "CN=$ADGroup,").count

if ($ADGroupCount -gt 0)
    #computer is a member - do something!


Checking if System.Object[] contains a value

This isn’t the most interesting of blog posts admittedly.  But I was using the SQL Server Management Objects in my PowerShell script to return a result set from a stored procedure in SQL server.  The data set returned from the Invoke-sqlcmd command was a System.Object[] type.  I wanted to see if a column (the Department column) in the result set contained a specific value. So firstly I obtained the result set like so:

# Load the SQL Server SMO library
Import-Module "sqlps" -DisableNameChecking

#SQL Server
#Return results from stored procedure
$sql_departments = Invoke-Sqlcmd -ServerInstance $SQLServer -Database $SQLDatabase -Query 'exec [dbo].[ALKANESTOREDPROCEDURE]'

In PowerShell 3 it was a trivial exercise:

if ($sql_departments."Department" -contains "AlkaneDepartment")


however in PowerShell 2 it required slightly more legwork, and was a little slower to run:

if (($sql_departments | Select -ExpandProperty Department) -contains "AlkaneDepartment")