> How do I please sort; $a in ascending order 
> 
> 
> ##########################################################
> $inFile = "<ETOPUP-TRANSACTIONS.DAT;1";
> $outFile = "sort-etopup.pl";
> open IN, $inFile or die "Can't open $inFile: $!";
> open OUT, ">$outFile" or die "Can't create $outFile: $!";
> 
> while (<IN>) {
> $line = $_;
>         $a = substr($line, 94, 8); # Terminal ID
>         $b = substr($line, 109, 6); # Merchant ID
>         $c = substr($line, 80, 14); # Date
>         $d = substr($line, 4, 1);   # Network ID
>         printf OUT "%8s %6s %14s %1s\n", $a, $b, $c, $d;
> }
> [End of file]
> #####################################################

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