drush 8.1.9 on php 7 not giving any "drush status" in docroot folder I just setup a fresh install of drupal 7, ubuntu 16.04, installed php 7.0 and git cloned the drush repo which checkout of 8.1.9 drush. When I do a drush status on the docroot of my drupal folder it shows the following and when doing a drush dl it fetches only drupal 8 modules. 

 PHP executable         :  /usr/bin/php
 PHP configuration      :  /etc/php/7.0/cli/php.ini
 PHP OS                 :  Linux
 Drush script           :  /vendor/drush/drush/drush.php
 Drush version          :  8.1.12
 Drush temp directory   :  /tmp
 Drush configuration    :
 Drush alias files      :  /home/ubuntu/.drush/hotsite.aliases.drushrc.php




When I used to run php 5.6, it would give me all the details of my install. What did I do wrong here? 

---- updated with drush status in the sites/default folder:

$:/var/www/hotsite_d7/docroot/sites/default$ drush status
 PHP executable         :  /usr/bin/php
 PHP configuration      :  /etc/php/7.0/cli/php.ini
 PHP OS                 :  Linux
 Drush script           :  /vendor/drush/drush/drush.php
 Drush version          :  8.1.12
 Drush temp directory   :  /tmp
 Drush configuration    :
 Drush alias files      :  /home/ubuntu/.drush/aliases.drushrc.php

$/var/www/hotsite_d7/docroot/sites/default$ drush @hotsite status
 Drupal version                  :  7.57-dev
 Site URI                        :  http://default
 Database driver                 :  mysql
 Database hostname               :  127.0.0.1
 Database port                   :
 Database username               :  xxx
 Database name                   :  xxx
 Database                        :  Connected
 Drupal bootstrap                :  Successful
 Drupal user                     :
 Default theme                   :  bootstrap
 Administration theme            :  seven
 PHP executable                  :  /usr/bin/php
 PHP configuration               :  /etc/php/7.0/cli/php.ini
 PHP OS                          :  Linux
 Drush script                    :  /vendor/drush/drush/drush.php
 Drush version                   :  8.1.12
 Drush temp directory            :  /tmp
 Drush configuration             :
 Drush alias files               :  /home/ubuntu/.drush/aliases.drushrc.php
 Install profile                 :  standard
 Drupal root                     :  /var/www/hotsite_d7/docroot
 Drupal Settings File            :  sites/default/settings.php
 Site path                       :  sites/default
 File directory path             :
 Temporary file directory path   :  /tmp

$/var/www/hotsite_d7/docroot/sites/default$
Drush usually does this when it cannot find a Drupal installation, which happens when it cannot find a settings.php. Did you go through the installation process yet? (visiting install.php on the browser or doing drush site-install)