I have a server and I run around 20 Drupal 7 websites. As I start to get more clients It's becoming increasingly more time consuming doing Drupal core and modules updates.
Is there any way to have a shared Drupal 7 core, libraries and modules (just the main ones that I use as standard like views, context, backup, libraries etc) so I can updated those once and it updates for ALL of my websites. Any site specific modules I would still like to keep seperate.
I'm running a linux server with WHM and cpanel for each account if that helps at all. I also have shell access to my sevrer.
note: that each website is running as a different account on the server so each is an individual vhost.
Any advice on how to manage this would be greatly appreciated