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CSV Sorting on only particular columns

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http://www.unix.com – Hello! So ive been presented with this comma-delimited file: I need a print to look as below " lastname, phone_number, zip for every person with a last name starting with the letter H, I only with a 650-area code phone number. output should be sorted by reverse ZIP code " I only have four columns Harris, K, (650)345-1760 1200, Ellis Street Suite 230 Mountain CA 93042 Mitchell, A, (212)-555-1234 650, This (HowTos)