FOR statement using NOT on a file

I want to write a batch that finds all the '.txt' files NOT matching D_

how would I modify the code below


FOR /r C:\myfolder\ %%f in (D_*.txt) DO

--tnx
DJ

 

Would something like this work for you?...

Code:

for /f "tokens=1 delims=*" %%f in ('dir /b /s C:\myfolder\*.txt^|find /i /v "\D_"') do @echo %%f

 

What I'm trying to do is: open a bunch of Cad files and save them as blocks in a number of folders so I can see the thumbnails, as AutoCad before 2000 didn't do thumbnails. The problem is, I can't get the code just right.
dwg\arch
dwg\furn\tbl
dwg\furn\chair
dwg\lanscape\tree
dwg\lanscape\shrub
...

this works:

FOR /r C:\CAD\BLKS\dwg\ %%f in (*.dwg) DO START /WAIT C:\"Program Files"\"Autocad Land Desktop 2008"\acad.exe /p "DJK_MAP" /nologo "%%f" /b C:\CAD\BLKS\wbout.scr

before the above FOR statement, the original code had

md C:\CAD\BLKS\dwg\arch\wb

but it didn't make additional wb subfolders.

what I was trying to do is save the file with a D_ (for detail) and then copy the file I wanted to a symbol library

there are 7500 files. A lot of files are the same content but different names, or the same name in different folders and different content.

I can modify the script and LISP code to save the CAD file but how do I create a wb folder in each subdirectory? I did try a FOR with MD but it didn't work.

tnx
DJ