@echo off
setlocal enableextensions enabledelayedexpansion

set sSourceFile=C:\Мои проекты\0212\Source.txt
set /a iCount = 5

if exist "%sSourceFile%" (
	<"%sSourceFile%" (
		for /l %%i in (1, 1, %iCount%) do (
			set sVar=
			>nul set /p sVar=
			echo.!sVar!
		)
	)
) else (
	echo Can't find source file [%sSourceFile%].
	exit /b 1
)

endlocal
exit /b 0