Copy over missing files - xcopy switches

Is there any switches for xcopy, (or any other copy program) that will skip a file if it exists, and jsut copy files that don't exist?

I'm trying to copy a large volume of data over a wan link that is being a little flaky.

I'd like to be sure I didn't miss any files, so running a copy command that skips everything that is there,and just copies what is missing.

It's too simple to not exist already...

thanks
erikwhitewayAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
xcopy /? gives you all the switches.

A popular tool is ROBOCOPY - it has retry options (though they are not retry after the copy finishes - which would make it more useful).

Download Robocopy here:
http://www.microsoft.com/downloads/details.aspx?FamilyID=9d467a69-57ff-4ae7-96ee-b18c4790cffd&DisplayLang=en
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Lee W, MVPTechnology and Business Process AdvisorCommented:
You could also try XXCOPY
http://www.xxcopy.com/index.htm
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