Well, I guess the reason there is no shebang is because it is not intended as a stand-alone script but rather a piece that was integrated (in different form) in a provisioning system.

For instance, the logic to determine that the system in fact is a VMware is missing as well as all the other physical hardware determination pieces.

But you are correct, I could have indicated it was Bash :) On the other hand, people that could not figure that out shouldn't care about the article anyway ;-) To me the lack of any indentation is more concerning. I guess I need to look for a better Drupal theme :-/