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What's the rsync options that will set it up in a contribute mode, i.e.: files from source can only update the destination, not overwrite or deletion. Say, I have a picture folder in my source which has the recent picture, and the destination has all the pictures I ever have. I just want to get the source to destination with new pictures. How do I do this? Thanks,


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If I understood your question correct, I guess you can use the "-u" option.

   -u, --update
          This  forces rsync to skip any files which exist on the destina-
          tion and have a modified time that  is  newer  than  the  source
          file.   (If an existing destination file has a modification time
          equal to the source file’s, it will be updated if the sizes  are
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