求大神指教，我写了个批处理，想替换1.txt内第四行内容。因为文件过大，想运行到第四行后做一个break退出循环。但语法总是出错。能有大神指教下吗，麻烦帮我看下哪里有错
@echo off
set file=1.txt
((for /f "tokens=1* delims=:" %%a in ('findstr /n . "%file%"') do (
if %%a equ 4 (echo,zhet MARKER NAME ) else (echo,%%b & goto END)
)
)
:END
)>tmp
move tmp "%file%"
pause

(for /f "tokens=1* delims=:" %%a in ('findstr /n . "%file%"') do (
if %%a equ 4 (echo,zhet MARKER NAME&goto END) else echo,%%b
)
)>tmp
:END