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Recently we had a request to update a whole stack of servers registry keys. With PowerShell this is easy to do.
In the first step you need to set the ___location of where you want to work. In this case it was HKLM:\SOFTWARE\Location - Location being where you want to update the key. The command for this would be:
Set-Location "HKLM:\SOFTWARE\Location" (note the inverted commas)
Then we need to get the property values of the path, you can do this running this command:
Get-ItemProperty -Path .
This lists all the keys.
Now we can finally change the value of the key. To do this you can run the following command:
Set-ItemProperty -Path . -Name "Name of key" -Value "Value details"
There you have it, simple enough to update.