WHY

需下载第三方工具 crc32sum

@echo off & setlocal enabledelayedexpansion

REM 源文件夹1
set "fd1=E:\Test\1"
REM 源文件夹2
set "fd2=E:\Test\2"

for /f "delims=" %%i in ('crc32sum "%fd1%\*.nds"') do (
    set "s=%%i"
    for %%j in ("!s:~0,-9!") do set "_!s:~-8!=%%~nxj"
)

for /f "delims=" %%i in ('crc32sum "%fd2%\*.nds"') do (
    set "s=%%i"
    for %%j in (!s:~-8!) do (
        if defined _%%j ren "!s:~0,-9!" "!_%%j!"
    )
)
pause
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WHY

function Get-MD5($filePath){
    $objMD5 = [System.Security.Cryptography.MD5]::Create('MD5');
    $stream = [IO.File]::Open($filePath, [IO.FileMode]::Open, [IO.FileAccess]::Read);
    [BitConverter]::ToString( $objMD5.ComputeHash($stream) );
    $stream.Close();
}

$fd1 = 'E:\Test\1';    #源文件夹1
$fd2 = 'E:\Test\2';    #源文件夹2
$ext = '*.nds';        #文件类型
$Hash = @{};

dir -Literal $fd1 -filter $ext | forEach {
    $md5 = Get-MD5 $_.FullName;
    $Hash[$md5] = $_.Name;
}

dir -Literal $fd2 -filter $ext | forEach {
    $md5 = Get-MD5 $_.FullName;
    if( $Hash.ContainsKey($md5) ){
        mv -Literal $_.FullName -Dest ($fd2 + '\' + $Hash[$md5]) -Force;
    }
}
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