How to delete all files in a directory with RoboCopy

Create an empty directory such as  C:\empty

In this scenario, the folder we would like to empty out is  C:\test

After creating the empty directory, you are ready to erase all the contents of your desired directory like so:

robocopy c:\empty c:\test /purge

or

robocopy c:\empty c:\test /MIR

https://tylermade.net/2017/10/06/how-to-delete-all-files-in-a-directory-with-robocopy/