I've got a directory that contains a bunch of other folders containing CoffeeScript/ JavaScript files. I'm able to compile the CoffeeScript files into a new folder with the same folder structure fine.

What I want to do is copy all the *.js files in the source folder to the destination folder recursively. I also don't want to overwrite any files that are already present in the destination folder. Any thoughts of how to accomplish this?

I tried using cp -n source/**.js desination/ and cp -Rn source/**.js desination/ after looking at another similar question, but it doesn't seem to be working.

Any idea how to accomplish this?