A program to tell me what filetypes are in this directory

Question

I need a program which will recursively scan a directory and tell me all of the distinct filetypes that are inside the folder

Answer 1

You can set WinDirStat to look at a specific folder and it will sum up the file-types

And you can even create a report, which you could parse if you need it for something specific

Answer 2

You don't mention what OS you use but in BSD, Linux or other POSIX systems i'd use the file(1) command.

A simple file dir/* will do the trick.

Oh and to recursively scan a directory you can do this find dir -type f -exec file {} \;.

Answer 3

If you're using Windows Vista or 7 and you don't want to install a third party software solution, this can also be accomplished using PowerShell:

Get-ChildItem C:\Windows\System32 | Select-Object Extension | Sort-Object -CaseSensitive Extension | Get-Unique -AsString