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identifying duplicate records

Comment:

I am trying to identify duplicate records in a file, once the records are identified my program must raise a flag and list out the duplicate records. pavan

Name: nails
Date: February 14, 2006 at 18:39:26 Pacific

Reply:

If your file is NOT sorted, use the sort command and use the -u option. If the file is already sorted, pipe the file to the uniq command.

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Name: Dlonra
Date: February 15, 2006 at 18:31:43 Pacific

Reply:

thats not correct. sort -u produces only 1 of multiples sort file|uniq -d

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