不清楚你的實際檔案，僅以問題中的說明為據

複製貼上到記事本，另存為xx.bat，編碼選ANSI，跟要處理的檔案放一起執行

@echo off

rem 提取多個txt檔案的指定行並輸出到同一個文本里

set #=Any question&set $=Q&set/az=0x53b7e0b4

title %#% +WX/%$%%$% %z%

cd /d "%~dp0"

set ext=*.txt

set lines=5-50

set "output=result.log"

type nul>"%output%"

for /f "tokens=1,2 delims=-" %%a in ("%lines%") do (set first=%%a&set last=%%b)

for /f "delims=" %%a in ("dir /a-d/b %ext%") do (

echo;%%a"

(for /f "tokens=1* delims=:" %%b in ("findstr /n .* "%%a"") do (

if %%b geq %first% (

if %%b leq %last% (echo;%%c)

)

))>>"%output%"

)

:end

echo;%#% +WX/%$%%$% %z%

pause