I'm wondering how I'd be able to symlink all the files in a dir structure and then also copy files of a certain extension in that dir. I'm basically symlinking all files within /foo/a,b,c to /bar/a,b,c and then copying over certain files with a certain extensions.
From the /bar directory, to create all symlinks for everything but these extensions.
And then to copy all the extensions, same command for the most part.
Edit: Copy entire directory structure, symlink some files, copy others. Wasn't sure if this was possible at first with a single command, but just learned some other handy tricks with find.
Only important thing to note is when making the symbolic link you give the actual path the links will take to relate to foo/. My example shows relative links when they are side by side (could also make absolute symbolic links as well).