function Invoke-ExternalTool {
    param(
        [Parameter(Mandatory=$true)][string]$FileName = "wsl.exe",
        [string]$Arguments = "-l -v"
    )

    $psi = [System.Diagnostics.ProcessStartInfo]::new()
    $psi.FileName = $FileName
    $psi.Arguments = $Arguments
    $psi.UseShellExecute = $false
    $psi.RedirectStandardOutput = $true
    $psi.RedirectStandardError  = $true

    # Read Output as Unicode(UTF-16LE)
    $psi.StandardOutputEncoding = [System.Text.Encoding]::Unicode
    $psi.StandardErrorEncoding  = [System.Text.Encoding]::Unicode

    $p = [System.Diagnostics.Process]::new()
    $p.StartInfo = $psi
    [void]$p.Start()

    $out = $p.StandardOutput.ReadToEnd()
    $err = $p.StandardError.ReadToEnd()
    $p.WaitForExit()

    if ($p.ExitCode -ne 0 -and $err) {
        throw $err
    }

    # Within PowerShell, UTF-16 is converted to its internal Unicode representation, and operations can then be performed as UTF-8 if needed.
    return $out -split "`r?`n"
}
# Usage:
# Invoke-ExternalTool "外部ツールの実行ファイル" "引数"
$lines = Invoke-ExternalTool "wsl.exe" "-l -v"
$lines
$lines[1].Contains("Ubuntu")