@echo off
type nul>"%temp%\temp.txt"
for %%i in (*.txt) do (
for /f "tokens=1* delims=:" %%a in ('findstr /n .* "%%i"') do (
if %%a==7 set /p aa=%%b<nul >>"%temp%\temp.txt"
)
)
for /f "delims=" %%d in ('type "%temp%\temp.txt"') do (
type nul>"%%d".txt
)
del "%temp%\temp.txt"
第七行中不能有特殊符号
