I'm trying to copy all files and folders from one directory to another, but exclude certain files. Specifically, I want to exclude subversion files and folders. However, I'd like a general yet concise solution.

I imagine I'll find the need to exclude several types of files in the near future. For example, I might want to exclude .svn, *.bak, and *.prj.

Here is what I've put together so for, but it is not working for me. The first part, find works, but I'm doing something wrong with xargs and cp. I tried cp with and without the -R. Also, I'm using OS X and it appears to have a less featured version of xargs than linux systems.

find ./sourcedirectory -not \( -name .svn -a -prune \)
     | xargs -IFILES cp -R FILES ./destinationdirectory