How to move Composer created folder of drupal-8.x.x up one level to html? So I created a fresh install of Ubuntu 16.04 and installed the LAMP stack, installed phpmyadmin and composer and then finally drush. Everything worked fine until I downloaded and installed Drupal using the "drush pm download" command which worked fine but now my entire drupal site is located in a folder called "drupal-8.6.3". I used to use the wget command and the tar --strip components command to get it properly organized.

I can delete the drupal-8.6.3 directory but how can I download my drupal site using composer or drush from the html folder?
Since you are using composer to manage dependencies, you should install Drupal with Composer instead of using drush pm-download:

https://www.drupal.org/docs/develop/using-composer/using-composer-to-manage-drupal-site-dependencies#download-core

Also, you should use Composer to manage contributed modules instead of using drush pm-install:

https://www.drupal.org/docs/develop/using-composer/using-composer-to-manage-drupal-site-dependencies#managing-contributed

You can even use Composer to manage third-party libraries:

https://www.drupal.org/docs/develop/using-composer/using-composer-to-manage-drupal-site-dependencies#third-party-libraries

And to apply patches to Drupal core and contrib modules:

https://www.drupal.org/docs/develop/using-composer/using-composer-to-manage-drupal-site-dependencies#patches

Don't worry, you'll still use drush for a lot of things -- but once you've switched to using Composer to manage dependencies, you should stick with it as much as possible and avoid using Drush makefiles or installing / upgrading with Drush.

Here's an article with some common "gotchas" you may encounter when managing Drupal with Composer:

https://www.jeffgeerling.com/blog/2017/composer-and-drupal-are-still-strange-bedfellows