From: Giampiero Zanchi <cidza@...>
Date: 2010-07-23T23:15:53+09:00
Subject: Re: Text to Binary

test = "Hello World!"
test2 = test.unpack('c*')
test3 = test2.collect {|x| x.to_s(3).rjust(6,'0') + ' '}
puts test3.to_s

use rjust
http://ruby-doc.org/core/classes/String.html#M000814
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