Ubuntu Servers :: Script To Automatically Create Vhost And Update /etc/hosts?

Do you have any idea on how to achieve my goal? Here is the scenario. As a requirement on our development process for every ticket we have we need to create a branch(svn) so that we can develop without disturbing other developer. Now for every checkout I made I need to create a vhost so that I can develop first in my local before deploying to the branch.The site I'm working on is based in Drupal. The files I checked out is just the all folder of Drupal. The core files are already in my local. So the script would grab the core files and copy the all folder in my checkout branch then put them in the vhost.So basically I need a script that will do these automatically for me:1. Setup a vhost Ex: My branch name is 1205googleplusone. Inside that branch has two folders, all and default. What I need only is the DocumentRoot should only point to all folder.2. Update the /etc/hosts Ex: The URL should be 1205googleplusone.domain.com. 3. Create a new database for the new site The script should create a new database and update the configuration.php