Sometimes, I end up with duplicates; this appears to be an evernote problem.

I wrote dedup-notes to deal with this problem.

The usage message is simply:

Usage: /home/dstromberg/src/home-svn/dedup-notes/trunk/dedup-notes [--separator separator]
Deduplicate stdin to stdout
separator always matches a whole line

You can e-mail the author with questions or comments: