批量列出所有文件名的批處理

@echo off
set startDir = %CD%
if(%1)==('help') GOTO USAGE
IF (%1)==() (
set work_dir=%cd%
) ELSE (
set work_dir=%1
)
cd /d %1
SET counter=0
REM *
dir /B /A:-D %1 > upx8.txt
REM *
FOR /F %%i IN (dirs.txt) DO (
set /A Counter += 1
)
echo %Counter%