@ECHO OFF
SET TxtDir="%~dp0"
echo.&set /p  A=Please type in the start row No. what do you need to delete: 
echo.&set /p  B=Please type in the end row No. what do you need to delete: 
ECHO Running~~~~waitting....
ECHO Running~~~~do not close me!
CD /D %TxtDir%
FOR /F "tokens=%A% delims=" %%I IN ('DIR /A /B *.txt') DO ((MORE +%B% "%%I">"%%I_")&(DEL /A /F /Q "%%I")&(REN "%%I_" "%%I"))
ECHO Good Job*_*
PAUSE
复制代码

@echo off
set linenum1=5
set linenum2=10
setlocal enabledelayedexpansion
for /f "delims=" %%i in ('dir /b /a-d *.txt') do (
    set n=0
    (for /f "delims=" %%a in ('type "%%i"') do (
        set /a n+=1
        if !n! lss %linenum1% echo,%%a
        if !n! gtr %linenum2% echo,%%a
    ))>new_%%i
    move "new_%%i" "%%i"
)
pause
复制代码