Added new script

Get-TopFileExtensionSize/Get-TopFileExtensionSize.ps1

@@ -0,0 +1,53 @@
+function Get-TopFileExtensionSize {
+<#   
+.SYNOPSIS
+Function to retrieve the largest files of a specific extension
+    
+.DESCRIPTION
+This function retrieves the largest files of a specific extension and list the top X
+	
+.PARAMETER Extension
+Which extensions will be listed
+
+.PARAMETER FolderPath
+The path of a folder or volume that should be enumerated
+
+.PARAMETER TopFile
+The top number of files to be displayed for each extension
+
+.NOTES   
+Name:        Get-TopFileExtensionSize
+Author:      Jaap Brasser
+DateCreated: 2017-10-30
+Version:     1.0.0
+Blog:        http://www.jaapbrasser.com
+
+.LINK
+http://www.jaapbrasser.com
+
+.EXAMPLE
+Get-TopFileExtensionSize -Extension 'txt,xml,log' -TopFile 5 -FolderPath C:\
+    
+Description 
+-----------
+
+#>
+
+
+    param(
+        $Extension = '${P_FileExtensions}',
+        $FolderPath = '${Rtv_DriveLetter}\',
+        $TopFile = '${P_DisplayTopFileExt}'
+    )
+
+    $Extension.Split(',') | ForEach-Object {
+        Get-ChildItem $FolderPath -Include "*$_" -Recurse -ErrorAction SilentlyContinue |
+        Sort-Object -Property Length -Descending | 
+        Select-Object -First $TopFile -Property @{
+            Name       = 'SizeMB'
+            Expression = {
+                [math]::Round($_.Length/1MB, 2)
+            }
+        }, Name, FullName
+    } | Format-Table -AutoSize
+}