@echo off
setlocal ENABLEDELAYEDEXPANSION
type nul > ext
type nul > ext.txt
FOR /r D:\Desktop\xlslib %%i in (*) do @echo %%~xi >> ext
for /f "delims=" %%e in ('sort ext') do (
if not defined %%e set %%e=Def & >>ext.txt echo %%e
)
notepad ext.txt
//shell/1286