You can also count all the letters this way: 
#!/usr/bin/perl -w
use strict;

my $string = q<ABCDABDIDAOFOOFAA>;
my %count;
for (split(//, $string)){$count{$_}++;}
print(q<Matches >, $count{A}, "\n");

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This way you can choose which letter's count you wish to view ;)

In reply to Re: how to count matches by j1n3l0
in thread how to count matches by jeanluca

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