Hello... In this script I am trying to match a pattern across various files and write the output to one csv file. Thus I use headers in the csv file which is written more than once. How can I use regular expression to write the headings just once. 
open ERROR, ">>$exceptionoutput" or $log->logdie ("Error opening $exce
+ptionoutput file\n");
    
# Print the headings for the CSV file
while(ERROR){
        if($_ !~/STATUS CODE([0-9A-Za-z].*)VIP CODE/){
            printf ERROR "STATUS CODE,TIMESTAMP,USERID,TRANSACTION TYP
+E,POLICY NUMBER,CREATION TYPE,VIP CODE\n";
            last;
        }

    }
    close ERROR;

[download]
Now despite this the heading is created 7 times if I run the same script 7 times through a batch file. Thanks

In reply to CSV and regular expressions by Nesh

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