Kill a directory in DOS

[SMcNeill]

As for doing it in a DosBox-X specific way, you should really read their documentation and learn the old commands which they emulate.  

https://github.com/joncampbell123/dosbox...d-Commands

Specifically scroll down and look at the DELTREE command: 

DELTREE (external command)

Deletes a directory and all the subdirectories and files in it.

Usage: DELTREE [/Y] [drive:]path [[drive:]path[…]]

Note: This will delete the entire directory tree. Please use this command with caution.