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Hi all, I am able to copy the dir from one drive to another drive on local machine using windowsXP. Is there any command by which I can get only the updation of file ie only the incremental?. Suppose I have a text file say ss.txt of 3KB in size and I have taken the backup of this file. Now I am making the changes in to this file(ss.txt) by adding 1KB of data. Now I want this 1KB data (in to a