MD5

md5.ps1

function GetMD5{
    param($fileName)
    $stream = New-Object IO.StreamReader $fileName
    $md5 = [System.Security.Cryptography.MD5]::Create()
    $hash = $md5.ComputeHash($stream.BaseStream);
    $result = [System.BitConverter]::ToString($hash).Replace("-","").ToLower()
    $result
}

date; Get-ChildItem ***ここにディレクトリを指定する*** -recurse | ?{ !$_.PSIsContainer } |
%{
    echo ($_.Name + " " + (GetMD5 $_.FullName))
}; date;