I have data that goes into a text file from a CGI form. The problem is I dont want duplicates in the second and fifth field. The second field is the date field and the fifth field is a number that should always be unique. I will put this script in my cgi form where after the form is submitted it will open up this text file and check for this duplicate problem in the second and fifth field only. 
121|20030831|lkj|lkjlkj|65
122|20030801|qq|www|43
123|20030812|qq|aah|43
124|20030812|uiy|kjh|87
125|20030812|iuy|kjh|87 #duplicate here

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In reply to Finding duplicates by Anonymous Monk

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