[文件操作] 求助批处理如何删除xml文档里特定某几行内容？

@echo off
setlocal enabledelayedexpansion
set n=0
(for /f "delims=" %%a in ('findstr /n ".*" abc.xml') do (
    set "str=%%a"
    set /a n+=1
    echo !n!|findstr /bev "345 789">nul&&echo !str:*:=!
))>#abc.xml
pause
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@echo off
findstr /n .* "c.xml" | findstr /vb "\<345\> \<789\>" >$_t
>"$$c.xml" (for /f "tokens=1*delims=:" %%a in ($_t) do echo;%%b)
pause
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@echo off & cd /d "%~dp0"
setlocal enabledelayedexpansion
set "delLine=3,4,5,7,8,9,13,13,14,"
for %%i in ("*.xml") do (
	echo %%i
	(
		for /f "tokens=1* delims=:" %%a in ('findstr /n .* "%%i"') do (
			if "!delLine:%%a,=!"=="!delLine!" (
				echo.%%b
			)
		)
	) >"%%i_new"
	move /y "%%i_new" "%%i"
	echo -----------------------------------
)
pause&exit
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@echo off
set "line=345: 789:"
for /f "delims=" %%i in ('dir  /b /a-d *.xml') do (
     (for /f "tokens=1*delims=:" %%a in ('findstr /n .* "%%i" ^| findstr /vb "%line%"') do echo;%%b)>$_t
     move  $_t  "%%i"
)
pause
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