@echo off
setlocal enabledelayedexpansion
for /f %%a in (1.txt) do ( 
	set /a p+=1
	if "!p!" geq 5 echo %%a
	for /f %%i in (2.txt) do (
	set /a w+=1
	if "!w!" equ "!p!" ( echo %%a && echo %%i)
	)
set w=
)
pause
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@echo off
for /f "delims=:" %%a in ('findstr/n . 1.txt') do set a=%%a
for /f "delims=:" %%b in ('findstr/n . 2.txt') do set b=%%b
if %a% geq %b% (set num=%a%) else (set num=%b%)
set n=0
:aaa
for /f %%i in ('more +%n% 1.txt') do (echo,%%i>>n.txt&goto :1)
:1
for /f %%j in ('more +%n% 2.txt') do (echo,%%j>>n.txt&goto :2)
:2
set/a n+=1
if %n% leq %num% goto :aaa
pause
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@echo off&setlocal enabledelayedexpansion
if "%~1" == "" (
   set "1.txt=a"&set "2.txt=b"
   for /f "tokens=1*" %%i in ('%~s0 :^|sort') do echo;%%j
   pause&exit
) else for /f "tokens=1,2* delims=:" %%a in ('findstr /n . 1.txt 2.txt') do (
       set str=00000000%%b!%%a!
       echo !str:~-8! %%c
)
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