`#!/usr/bin/perl -w # how to (ab)use substr
use strict;
my $pi='3.14159210535152623346475240375062163750446240333543375062';
substr ($^X,0)=
substr ($pi,-6);map{
substr ($^X,$.++,1)=chr(
substr($pi,21,2)+
substr($pi,$_,2))}(12,28,-18,-6,-10,14);map{$^O=$"x(
substr ($pi,-5,2));
substr ($^O,sin(++$a/8)*32+
substr ($pi,-2)/2+1,1)=$_;
substr ($^O,sin($a/4)*(
substr ($pi,2,2))+
substr ($pi,-7,-5)-1,1)=$_;print"$^O$/";eval($^X.('$b,'x3).
substr ($pi,-3,1).'.'.
substr ($pi,9,2));}(map{chr($_+
substr ($pi,21,2))}(
substr ($pi,8)x3)=~/../g);
`

Comment onHow to (ab)use substrDownloadCode