Help me with a Rake!

Hey guys,

Here's a newbie to ruby/rails. Loving them.

I've just joined this great community, and well, want to say hello asking for a favor (hehe):

I need a rake task template which performs the following:
- Read some vars from .yml file (such paths)
- Execute some commands (like sass-convert, etc)
- Copy some files and directories to an specified target directory

That's all. I really would appreciate your help with this!

Thanks in advance!