A small example using linkedin-connections to find the emails in the latest toplinked email list that are not currently in a LinkedIn connections export.
$ lein uberjar
First download your LinkedIn connections by exporting them to either of the Outlook formats or the Yahoo format. The export connections feature is available on LinkedIn at http://www.linkedin.com/addressBookExport.
Then download the latet toplinked email list. This is currently in four files so merge them as follow.
$ cat openLinkedIn-C8D6FEADDF661722-1of4.csv openLinkedIn-C8D6FEADDF661722-2of4.csv \
openLinkedIn-C8D6FEADDF661722-3of4.csv openLinkedIn-C8D6FEADDF661722-4of4.csv > current-toplinked.csv
To find the new emails.
$ java -jar toplinked-1.0.0-standalone.jar current-toplinked.csv current-linkedin.csv
toplinked is available as a Maven artifact via Clojars.
Distributed under the Eclipse Public License, the same as Clojure.