There is a data that is dir in user bills main-dir, there are 3 dir(one, two, three) in data, one has file "one.txt", two has file "two.txt", three has file "three.txt", they will copy to /opt/proj/data. If generic, select /home/bills/one/one.txt the first, then go to the /opt/proj/data, and exec to copy. 3 do thus, wether troublsome ? Now, here can 1 do they well : select a file the 1st, and select-addthe 2nd, the 3rd, then go to /opt/proj/data, and copy. If have 10(or more) like thus, the efficiency is very high ...
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