Install ImageMagick & RMagick on Ubunto 8.0.4

#1. Get ImageMagick
$ sudo aptitude update
$ sudo aptitude install libmagick9-dev

#2. Get RMagick
$ sudo gem install rmagick

#3. Test
$ irb -rubygems -r RMagick
irb(main):001:0> puts Magick::Long_version
This is RMagick 2.7.0 ($Date: 2008/09/28 00:23:10 $) Copyright (C) 2008 by Timothy P. Hunter
Built with ImageMagick 6.3.7 02/19/08 Q16 http://www.imagemagick.org
Built for ruby 1.8.6
Web page: http://rmagick.rubyforge.org
Email: rmagick@rubyforge.org
=> nil