[Iska]

Код:

@echo off
setlocal enableextensions disabledelayedexpansion

set sSourceFile=0001.txt

if exist "%sSourceFile%" (
	for /f "usebackq delims=" %%i in (
		`type "%sSourceFile%" ^| find.exe /i /c "!" 2^>nul`
	) do set /a iCount = %%~i
) else (
	echo Not found source file [%sSourceFile%].
	exit /b 1
)

echo Found: %iCount%.

endlocal
exit /b 0