Answers for "after signup make user login in laravel"

how login one user with id in laravel

public function manualLogin(){
    $user = User::find(1);
    Auth::login($user);
    return redirect('/');
}
///////////////////////////////////////////////////////////////
// or 

Auth::logout();

how to redirect back to admin page if user is not authenticated in laravel based on the guard

Redirect unauthenticated use