gawk "/《数学的历史》/{print a}{a=$0}" a.txt > b.txt
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@echo off
setlocal enabledelayedexpansion
set fileName=a.txt
for /f "tokens=1 delims=:" %%i in ('findstr /n "《数学的历史》" %fileName%') do (
    set lineKeyword=%%i
)
if !lineKeyword! equ 1 (
    echo,
) else if !lineKeyword! equ 2 (
    set /p linePri=<%fileName%
    echo,%linePri%
) else (
    set /a lineSkip=lineKeyword-2
    call :next !lineSkip!
)
pause
goto :eof

:next
for /f "skip=%1" %%i in (%fileName%) do (
    echo,%%i
    goto :eof
)
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