[Israel.pm] BruteForcing function

[amit sides]

Hi everybody..
i wanna write function that do kind of bruteforcing..
actually i want it to be a loop that shows every possible string by 
[a-zA-Z0-9!_-] ( or anything else i'll give )/
i´v tried to do a loop like
$x="a"; while (1) { $x++; }
but he shows only little latters...same with $x="A" and $x="1";
if someone have an idea how to do that...or example i would like to hear 
about it.

thank you .