# ExtensionReport.ps1
# Keywords: Get-ChildItem, file extensions, Group-Object
# Jeffery Hicks
# This script will prompt you for a directory name and then display a list of
# all file extensions sorted and grouped. As written the script will
# recurse through all subfolders.

[string]$dir=Read-Host "What directory do you want to start in?"
Write-Host "File report for "$dir.ToUpper()
get-childitem -path $dir -recurse|where {$_.Gettype().name -eq "FileInfo"} |group-object extension -noelement|sort count -desc