Execute this command (it has no errors):
Global composer requires drush / drush: 9. *
/var/www/site.com/htdocs/ and run
-bash: / usr / local / bin / drush: there is no such file or directory.
I can not find any documentation that covers this. Each documentation only has that first command to execute and that's it, there is no debugging, nothing.
Ubuntu 18.04, Drupal 8.