canyuexiaolang

@ECHO OFF & setlocal enabledelayedexpansion
(for /f "tokens=1* delims=:" %%i in ('findstr /n .* %1') do (
    set "line=%%j"
    if not "!line!"=="" (set "line=!line:H1=H2!")
    echo.!line!
))>back.txt
move back.txt %1
复制代码

可以简化。（setlocal移到外面不好但是为了效率移出去..）