how to get Auth user in laravel inside App/Commands

Your terminal has nothing with logged in user, but if you run your commands from your controllers, then you could something like

Route::get('/foo', function () {
    $user = User::first();

    $exitCode = Artisan::call('email:send', [
        'user' => $user->id,
    ]);

    //
});

full documentation here - https://laravel.com/docs/5.8/artisan#programmatically-executing-commands

thanks, @sergiu17 for your quick answer, I will go through it, thank you very much

In your command, how do you know which user to use?

thanks @snapey , ya got it now, ill close this, this is a wrong question. thank you very much