Over the last couple of weeks I have started playing with Drupal 8.  So far it's been a pleasant experience (surprisingly) though originally I had issues with getting it installed.  I tried using drush dl but it would not work (when used it would only download the latest version of Drupal 7).  Turns out Drush 6 (the version I was currently at) does not support Drupal 8.  Inorder to run Drush with Drupal 8 we have to upgrade Drush to version 7.

I searched and found a couple of resources to accomplish this. The major requirement to upgrading Drush is the need to have Composer installed.  Fortunately I installed Composer when I first installed Drush, but to double-check you can run command 'which composer' which will retuen the path to your Composer install (/usr/local/bin/composer).  After that you make sure Composer is in your system PATH and you can do that with the commands:

• sed -i '1i export PATH="$HOME/.composer/vendor/bin:$PATH"' $HOME/.bashrc 
• source $HOME/.bashrc 

To install Drush 7 all you have to do is issue the command:

• composer global require drush/drush:dev-master

Once done installing Drush 7 you can verify it by issuing the command:

• drush status

And that is all there is to it.

If you are in need of more in dept instructions for installing Drush 7 & Composer you can checkout this page:

• http://whaaat.com/installing-drush-8-using-composer