[文本处理] 批处理如何合并文本文件？

copy /a a.txt+b.txtCOPY

@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%i in (a.txt) do set /p=%%i<nul >>a1.txt
for /f "delims=" %%j in (b.txt) do set /p=%%j<nul >>b1.txt
for /f "delims=" %%k in (c.txt) do set /p=%%k<nul >>c1.txt
set /p c=<a1.txt
set /p a=<b1.txt
set /p b=<c1.txt
echo %c% >d1.txt
echo %a% >>d1.txt
echo %b% >>d1.txt
set n=0
:1
set /a n+=1
(for /f "delims=/ tokens=%n%" %%a in (d1.txt) do echo %%a) >>!n!.txt&&goto 1
pause
del a1.txt&del b1.txt&del c1.txt&del d1.txt
pauseCOPY

@echo off&setlocal enabledelayedexpansion
set n=1
:r
for /f "tokens=%n% delims=/" %%i in (a.txt b.txt c.txt) do echo %%i>>!n!.txt
set /a n+=1
goto :rCOPY

@echo off&setlocal enabledelayedexpansion
:again
(for %%1 in (a b) do (
	for /f "tokens=1-25*delims=\" %%a in (%%1.txt) do (
		for %%2 in (
			%%a %%b %%c %%d %%e %%f %%g %%h
			%%i %%j %%k %%l %%m %%n %%o %%p
			%%q %%r %%s %%t %%u %%v %%w %%x %%y %%z
		) do (
			set /a %%1+=1000001
			echo>>$!%%1:~-6!.txt %%2
		)
		echo;>%%1.txt %%z
	)
))>tmp.txt
::每次读取a与b的前25列到以其列数为名的临时文件，并把第26与之后的列输出到原文件中，以便下次分隔
for /f %%a in (a.txt b.txt) do goto :again
::若还存在未分割的列，则继续分割
copy /b $*.txt 合并.txt
::合并临时文件
del /q $*.txt
pauseCOPY