hi, i am having trouble with the second "if" statement in the script below. i only want to process the lines in the "fb.tsv" file where "Scan" appears in column 10. but in some cases the word "Scan" appears in lines i do not want to process (in say, column 20).

obviously the line if (/Scan/) will process all lines where "Scan" appears in both 10th and 20th columns. but for some reason the commented out line below returns correct values but appears to go through the file several times, and i only want it to go through the file once. this is probably a simple problem for someone who is more familiar with perl than me. any suggestions? thanks, niki 
#!/usr/bin/perl
#
@dbarray1 = ();
@dbarray5 = ();
open(FA, "fa.txt") || die "Cannot find the FA file. \n";
while ($line = <FA>)
        {
        chomp($line);
        @dbarray = split (/ /,$line);
        push(@dbarray1, $dbarray[1]);
        push(@dbarray5, $dbarray[5]);
        }
close(FA);

open(FB, "fb.tsv") || die "Cannot find the FB file. \n";
while ($line = <FB>)
        {
        chomp($line);
        @array = split (/\s*\|/, $line);
        foreach (@array)
                {
                 ($array[103] =~ m/^DB(\d{1,2})/);
                 $db_no = $1;
                 for ($i=0; $i<=$#dbarray1; $i++)
                        {
                        if (($dbarray1[$i] == $db_no) && (/Pointed/))
                                {
                                $pointed_result = $array[16]*$dbarray5
+[$i];
                                }
                #       if ($array[10] =~ m/Scan/)
                        if (/Scan/)
                                {
                                $scan_result = $array[16]*$dbarray5[$i
+]+20;
                                }

                        }
                }
        }
close(FB);

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In reply to question about if/pattern matching statement by nkpgmartin

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