``````for /f "delims=*" %f in ('dir "C:\folder\of\files\*.efs" /b') DO C:\folder\of\executable\program.exe -f "C:%~pf%f"
``````
1. A standard debugging technique is to insert the `echo` command into scripts and even compound/complex commands. If you do ``` for /f "delims=*" %a in ('dir *.avi /b /s') do @echo md "%~na" ``` you’ll get the output ``` "file 1" "file 2" "file 3" "file 4" ``` Notes: - The **`@`** prevents the `echo` commands *themselves* from displaying, so you see only their output. - `"delims=…"` tells `for` how to parse the lines of output from the `dir *.avi /b /s` command. I don’t know why the answer you linked to suggests `"delims=*"`. But the default behavior is to break lines apart at spaces, so, if your directory and/or file names contain spaces (as you indicated), you should use `"delims="` (specifying that there are no delimiters) to get this to work. 2. If you type `for /?` or `help for`, you’ll get documentation on the `for` command. Down in the fifth page, you’ll see ``` In addition, substitution of FOR variable references has been enhanced. You can now use the following optional syntax: %~I - expands %I removing any surrounding quotes (") ︙ %~pI - expands %I to a path only %~nI - expands %I to a file name only ︙ The modifiers can be combined to get compound results … ︙ ``` which explains why `%~na` is getting you just the file name of the `*.avi` files whose full names are in `%a`. Now try ``` for /f "delims=" %a in ('dir *.avi /b /s') do @echo md "%~pa" ``` and you’ll get ``` "the_current_directory\Folder A\" "the_current_directory\Folder A\" "the_current_directory\Folder B\" "the_current_directory\Folder B\" ``` From which we can conclude that you want to do ``` for /f "delims=" %a in ('dir *.avi /b /s') do md "%~pa%~na" ``` to create the `file 1` and `file 2` directories under `Folder A`, and the `file 3` and `file 4` directories under `Folder B`. And, as @dave\_thompson\_085 points out, you can combine `%~pa%~na` into `%~pna`.

https://superuser.com/questions/1033360/how-do-i-execute-commands-on-files-in-multiple-folders