grep ":02000004800971" -A 7 1.txt >2.txt
echo ":00000001FF">>2.txt
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$file1 = "1.txt"
$file2 = "2.txt"
((Get-Content -raw $file1) -match “:02000004800971(`n.*){7}”)
$matches[0] + ":00000001FF" | out-file $file2
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@echo off&setlocal EnableDelayedExpansion
set out=b.txt
for /f %%a in (a.txt) do (
set/a n+=1
if %%a equ :02000004800971 set/a nn=!n!+8 
if !n! lss !nn! echo %%a >>!out!
if !n! equ !nn! echo :00000001FF >> !out! & goto :oo
)
pause
:oo
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    @echo off&setlocal EnableDelayedExpansion
    set out=b.txt
    for /f %%a in (a.txt) do (
    set/a n+=1
    if %%a equ :02000004800971 set/a nn=!n!+8 
    if !n! lss !nn! echo %%a >>!out!
    if !n! equ !nn! echo :00000001FF >> !out! & goto :oo
    )
 :oo
echo 第 !n! 行
    pause
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@echo off
set n=0
setlocal enabledelayedexpansion
(for /f "delims=" %%i in (a.hex) do (
    if "%%i"==":02000004800971" set n=1
    if !n!==0 (
        echo,%%i
    ) else (
        set "str!n!=%%i"
        set /a n+=1
        if !n!==9 set n=0
    )
))>B.hex
(for /l %%a in (1,1,8) do echo,!str%%a!
echo,:00000001FF
)>new-A.hex
pause
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