Showing category results for PowerTip

Summary: Cloud & Datacenter Management MVP, Thomas Rayner, shows how to count backwards in a Windows PowerShell array.  I know I can access the first, second, and third items in an array by using $Array[0], $Array[1], and $Array[2], but how can I count backwards?  Use negative numbers, for example: $Array = @('first','second','third') $Array[0...

Summary: Cloud & Datacenter Management MVP, Thomas Rayner, shows how to set a variable to a default value in PowerShell.  How can I use Windows PowerShell to prompt a user for a value for a variable, but provide a default value if the user doesn’t enter anything?  First prompt the user for the value to the variable and then detect if the respo...

Summary: Cloud & Datacenter Management MVP, Thomas Rayner, shows how to use positional parameters in Windows PowerShell.  I always see people pass variables or data to a function without specifying the parameter name that the data is for, for example: “copy-item $source $destination” acts like “copy-item –path $source –destination $destination...

Summary: Cloud & Datacenter Management MVP, Thomas Rayner, shows how to easily send data to the output of a script.  How can I use Windows PowerShell to send the same data that I’m writing to a file to the standard output of my script?  In Windows PowerShell 5.0, use Tee-Object, for example: PS C:\WINDOWS\system32> Tee-Object -InputObject '...

Summary: Use Windows PowerShell to add an exclusion folder to Windows Defender.  How can I add the C:\temp folder to the exclusion list so it is not scanned by Windows Defender?  Use the Add-MpPreference cmdlet and specify the exclusion path, for example: Add-MpPreference -ExclusionPath "C:\Temp" Note  You must run Windows PowerShell with elevated...