How can I Robocopy only modified files and exclude newly created files in source folder. I'm using windows 7
/XL :: eXclude Lonely files and directories
See also What does Robocopy mean by tweaked, lonely, and extra? post.
Robocopy just copy files that have changed (in size or modified date, by default). If a file has not changed, Robocopy by default skips it, and copies nothing for the file. But if the two server have the different file systems, files are still re-copied, even though nothing has changed. You can use /fft switch, which makes the modify time comparison more tolerant (2 seconds granularity). There is a similar thread, please go through it to help troubleshoot this issue:Robocopy - want it to only copy new and updated files...http://social.technet.microsoft.com/Forums/en-US/3123bc0c-ee2e-4692-b346-769803651520/robocopy-want-it-to-only-copy-new-and-updated-files?forum=ITCG