WHY

$srcDir = 'E:\Test'; #源目录
$dstDir = 'D:\Mydir';#目标目录

dir -Literal $srcDir -Include *.* -Recurse | ?{$_ -is [IO.FileInfo] -and ($_.LastWriteTime-(Get-Date)).Days*($_.CreationTime-(Get-Date)).Days -eq 0} | ForEach{
    $strFolder = $dstDir + $_.DirectoryName.SubString(2);
    if(![IO.Directory]::Exists($strFolder)){
        $null = New-Item $strFolder -ItemType directory -Force;
    }
    copy -Literal $_.FullName -Dest ($strFolder + '\');
}
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