Here is another one liner from PowerShell In order to get list of installed hotfixes or service packs on local or remote computers.
To get list of hotfixes on four remote computers
Get-HotFix -ComputerName pc1, pc2, pc3, pc4
To get info on installed service packs on the remote four computers
Get-HotFix -Description "Service Pack" -ComputerName pc1, pc2, pc3, pc4
![PowerShell-Get-Hotfix](http://blog.technotesdesk.com/wp-content/uploads/2011/12/PowerShell-Get-Hotfix.png)
I have just noticed there is a new book – Windows PowerShell 2.0 Bible on Amazon – great resource for your daily use.