finding duplicates in csv based on key columns

Hi team,

I have 20 columns csv files. i want to find the duplicates in that file based on the column1 column10 column4 column6 coulnn8 coulunm2 . if those columns have same values . then it should be a duplicate record.

can one help me on finding the duplicates,

Thanks in advance.

i sorted the columns first based on the key and view the data but. it won't show properly.

thanks,
Baski

Give some input content and expected output ..

Try this: