Happy SysAdmin Day!

 

Basic PowerShell Commands

Get Execution Policy

Get-ExecutionPolicy

Set Execution Policy to Unrestricted

Set-ExecutionPolicy Unrestricted

Show PowerShell Version

$PSVersionTable

Get help for a command

Use this to get the help information for a command

Get-Help <cmdlet-name>

Search Get Help

Use this to search the help files. This is useful if you don’t know the command or want to see if one exists.

Get-Help *keyword*

Get Installed Modules

Use this command to display all the installed modules on a computer 

Get-InstalledModule

List All Available Modules

This will list all available modules on the computer.

Get-Module -ListAvailable

Get Installed Modules

Use this command to display all the installed modules on a computer

Get-Module -ListAvailable

Display available commands

This will display all commands that are available based on the modules that are loaded.

Get-Command

Windows 11: release information

Windows 11, version 21H2
(OS build 22621)

Windows 11, version 21H2 (original release)
(OS build 22000)

External links
Windows 11 release information

PowerShellTip: Get Get AD Domain Controllers operating system

Get-ADDomainController -Filter * | Select-Object Name, OperatingSystem

PowerShellTip: Get AD Global Catalog status from all DC

 

[System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain().DomainControllers | %{"$($_.Name) : $($_.isglobalcatalog())"}