Summary: Learn how to check a string to see if it contains another string. How can I use Windows PowerShell to check a string to see if it contains another string? Use the –Match operator: PS C:\> $a = [string]"This string contains a number of letters" PS C:\> $a -match 'a number' True
Summary: Microsoft Scripting Guy, Ed Wilson, shows how to query multiple WMI classes with Windows PowerShell and return a single object. Hey, Scripting Guy! I have this script that I have been working on for a while. It queries three different WMI classes. The first two classes are no problem because they only return a single item—for i...
Summary: Find Windows PowerShell cmdlets that accept a hash table for input. How can I find what Windows PowerShell cmdlets accept a hash table for input? Use the Get-Command cmdlet, use the ParameterName parameter, and search for HashTable information: Get-Command -ParameterName *hashtable*
Summary: Microsoft Scripting Guy, Ed Wilson, talks about using a filter hash table with Windows PowerShell to speed up boot trace parsing. Hey, Scripting Guy! I don’t get it. You wrote a script yesterday, and said that the performance was bad. You suggested that you could improve the performance, but then you did not do anything about i...
Summary: Easily find the largest number in a Windows PowerShell array. How can I use Windows PowerShell to easily find the largest number in an array of numbers? Pipe the array to the Measure-Object cmdlet, and use the –Maximum switch: PS C:\> $a = [array]1,2,5,6,3,2,9,1 PS C:\> $a | measure -Maximum &nbs...
