Powershell General

General PowerShell Commands

Date Published: January 28, 2022

This article consolidates a variety of general-purpose PowerShell commands for IT administrators. From Active Directory to DNS, SharePoint, and Azure, these commands help streamline tasks and improve efficiency.

Active Directory

Get Active Directory Schema Version

Retrieve the schema version of your Active Directory:

Get-ADObject (Get-ADRootDSE).schemaNamingContext -Property objectVersion

Get Groups with Extension Attributes

List all groups with their extensionAttribute15:

Get-ADGroup -Filter * -Properties extensionAttribute15 | Select name, extensionAttribute15

Set Extension Attributes for Groups

Apply a value to extensionAttribute15 for a group array:

foreach ($i in $groups) {Set-ADGroup $i -add @{extensionAttribute15="NoSync"}}

Remove Extension Attribute from a Group

Clear extensionAttribute15 for a specific group:

Set-ADGroup "groupname" -Clear "extensionAttribute15"

Autopilot

Save and Generate Windows Autopilot Information

Save the script and generate the CSV for Autopilot:

Save-Script -Name Get-WindowsAutoPilotInfo -Path c:\temp
Get-WindowsAutoPilotInfo.ps1 -OutputFile c:\temp\WindowsAutoPilotInfo.csv

SharePoint and OneDrive

Install SharePoint Online Module

Install-Module -Name Microsoft.Online.SharePoint.PowerShell

Connect to SharePoint Admin Site

$SPAdminSite = "https://contoso-admin.sharepoint.com"
Connect-SPOService -Url $SPAdminSite

List All OneDrive Sites

Retrieve all personal OneDrive sites:

Get-SPOSite -IncludePersonalSite $true -Limit all -Filter "Url -like '-my.sharepoint.com/personal/"

Remove SharePoint/OneDrive Site

Delete a specific SharePoint or OneDrive site:

Remove-SPOSite -Identity https://contoso-my.sharepoint.com/personal/j_doe_contoso_com

Grant Permissions to Another User’s OneDrive

Set-SPOUser -Site https://contoso-my.sharepoint.com/personal/j_doe_contoso_com -LoginName firstname.surname@contoso.com -IsSiteCollectionAdmin $false

Exchange and Azure

Install Exchange Online Management Module

Install-Module -Name ExchangeOnlineManagement

Get All Azure AD Users Except Members

Get-AzureADUser -All $true | Where {$_.UserType -ne "Member" -and $_.UserState -ne "Accepted"}

Retrieve Group Memberships of a Specific User

Get-AzureADUser -Filter "UserPrincipalName eq 'firstname.surname@contoso.com'" | Get-AzureADUserMembership

DNS Server

Copy Secondary DNS Zones

Get-DnsServerZone -ComputerName DNS1 | Where {$_.ZoneType -eq "Secondary"} | Add-DnsServerSecondaryZone -ComputerName DNS2

Registry Operations

Get a Registry Item

Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\TSAppSrv\TSMSI"

Network Configuration

Prefer IPv4 over IPv6

Check and modify preference for IPv4:

ping $env:COMPUTERNAME

New-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\" -Name "DisabledComponents" -Value 0x20 -PropertyType "DWord"

# Modify if the property already exists
Set-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Services\Tcpip6\Parameters\" -Name "DisabledComponents" -Value 0x20

Restart-Computer