Where are Extensions > Modules files located?

I want to know where are Extensions > Modules files located? And can I somehow extract all the files and database changes related to a particular module?

I'm working on a site that was built by someone else and since they no longer provide support, and there's a bug I need to troubleshoot, I would like to extract/download all the files (and may be database changes) related to a particular module so I can have a look at the code behind. Is this possible? Where are the files located in the opencart directory structure? I've been looking for it.

Cheers.

PS: I found a file under admin/controller/module but is this all? How can I tell if there are more files related to this module?

No, that is not all. There are some file again like at folder language, folder view.
You must open file at folder controller and read the code, you will know other files.

some interesting Links, regarding Opencart Programming:

http://stackoverflow.com/questions/1347 ... ncart-guru
http://forum.opencart.com/viewtopic.php ... 36#p569036
http://isenselabs.com/books/getacopy/47
https://www.packtpub.com/sites/default/ ... ter-01.pdf
https://github.com/opencart/opencart/wi ... ion-System

Good Luck!
Ernie
openshop.li/shop/