File type problem

I accidentally renamed thousands of files with the extension .pdf

These files originally had extensions like .doc, .xlsx, .mov, .jpeg, .mp4, and .pdf

How can I use Hazel to determine the file type? I have tried using "Kind ...is...." and "Kind... is not..." type rules, but these seem to just assume everything is a pdf file because of the extension.

I was hoping to find a "type is" rule.

You'll probably need a script for this. There is the 'file' command which can try to figure out the type based on the file's contents.

Hmmm... Scripts sound scary, I'm not sure where to start. I tried looking through this forum for s scripts tuorial, but I couldn't find any. I've no clue what the difference is between the different types of scripts. - Passes AppleScript , Passes JavaScript
Passes shell script etc.

Also I couldn't any "file comand in Hazel.

It's in macOS, not Hazel. Here's a manual for the 'file' program. It's a bit more technical but should give you a sense of what it does: https://ss64.com/osx/file.html

Mr_Noodle wrote:It's in macOS, not Hazel. Here's a manual for the 'file' program. It's a bit more technical but should give you a sense of what it does: https://ss64.com/osx/file.html

Many thanks for pointing me in the direction of this script! As you say, it looks daunting but I suppose I could learn it with some effort.