A way to do this would be like this: 
my $letter = "B";
open(my $in, "input_file") or die "Couldn't open file for read: $!";
while(<$in>) {
   print if m/^$letter/;
}

[download]
You could improve it slightly by stopping once you're done processing a certain letter, but I leave that as an exercise to the reader...:)

thor

Feel the white light, the light within
Be your own disciple, fan the sparks of will
For all of us waiting, your kingdom will come

In reply to Re^3: database sorter script by thor
in thread database sorter script by santander

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