Is there a way to tell Dropbox not to upload a certain file? (Eclipse related)

Question

I am trying to sync a code project between two computers, one running Windows and the other running Ubuntu 12.04. I use Eclipse on both machines, but the .metadata fold

Answer 1

Using the Official Dropbox Command Line Interface (CLI)

PROMPT$ dropbox help exclude
dropbox exclude [list]
dropbox exclude add [DIRECTORY] [DIRECTORY] ...
dropbox exclude remove [DIRECTORY] [DIRECTORY] ...

"list" prints a list of directories currently excluded from syncing.
"add" adds one or more directories to the exclusion list, then resynchronizes Dropbox.
"remove" removes one or more directories from the exclusion list, then resynchronizes Dropbox.
With no arguments, executes "list".
Any specified path must be within Dropbox.

http://www.dropboxwiki.com/tips-and-tricks/using-the-official-dropbox-command-line-interface-cli