Is that the solution or it can be done easier?
$string="UUUUUUUUUUUUUUUUUU";

if ($string=~/U+/ && $string =~ m/[^ABCDEFGHIJKLMNOPQRSTVWXYZ]/){
    print "FOUND\n";
}

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In reply to Re: Check if a variable contains only one letter? by Anonymous Monk
in thread Check if a variable contains only one letter? by Anonymous Monk

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