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Interesting DOS question re. copying...  RSS feed

 
Charles Keller
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I have on an old 586 (Win98) two data files called
E:\data\ with about 25 subdirectories and a total of 300 files and
E:\data-1\ with about 30 subdirectories and a total of about 400 files
Now I intend to amalgamate E:\data into E: data-1 and I was thinking of using
xcopy E:\data\*.* E:\data-1\*.* /s
but my question is:
"if file in E:\data\ already exists in E:\Data-1\= do not copy"
what is the proper DOS syntax to achieve this?
Thank you for your input.
Charles.
 
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