idos

@echo off
setlocal enabledelayedexpansion
set a=HKLM,"SYSTEM\
set b=RegAdd, HKLM,0x3,"SYS\
for /f "delims=" %%a in (1.txt) do (
	echo %%a | find "0x00030001" >nul
	if not errorlevel 1 (
		set str=%%a
		call set str=%%str:%a%=%b%%%
		call set str=%%str:0x00030001,=%%
	) else (
		set str=%%a
	)
	echo !str!
)
pause
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我是用的纯批处理，小学生水平...