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Windows Powershellでファイル拡張子を一括変換

Last updated at Posted at 2014-09-23
> Get-ChildItem -Path *.mp4 -Recurse | %{
$old = $_.FullName;
$new = [System.IO.Path]::ChangeExtension($old, ".m4a");
Rename-Item -LiteralPath $old $new
}

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