::查找字串插入上下文
@echo off
for /f %%n in ('sed -n "/abc:/=" 1.txt')do set/ab=%%n,a=b-1,c=b+1
(
sed -n "1,%a%p" 1.txt
sed "" 上方文字.txt
sed -n "%b%p" 1.txt
sed "" 下方文字.txt
sed -n "%c%,$p" 1.txt
)>2.txt
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sed -e '/abc:/i 1111' -e '/abc:/a 222' 1.txt
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sed -e '/abc:/i 111' -i 1.txt
sed -e '/111/r 1.txt' -e '/111/d' -e '/abc:/r 2.txt'
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@echo off
for /f "delims=" %%a in ('findstr /n ".*" 1.txt') do (
    set "str=%%a"
    setlocal enabledelayedexpansion
    if not "!str:*:=!"=="abc:" (
        echo,!str:*:=!
    ) else (
        type a.txt
        echo,abc:
        type b.txt
    )
    endlocal
)
pause
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