gistfile1.txt

irb(main):001:0> require 'RMagick'
=> true
irb(main):002:0> i = Magick::Image.ping('test.jpg').first 
=> test.jpg JPEG 1600x1084 1600x1084+0+0 DirectClass 8-bit 485kb
irb(main):003:0> i.grey? 
=> true
irb(main):004:0> i.colorspace 
=> RGBColorspace=1
irb(main):005:0> i = Magick::Image.read('test.jpg').first
i=> test.jpg JPEG 1600x1084 1600x1084+0+0 DirectClass 8-bit 485kb
irb(main):006:0> i.grey?
=> false
irb(main):007:0> Magick::Version
=> "RMagick 2.9.1"
irb(main):008:0> Magick::Magick_version
=> "ImageMagick 6.5.1-1 2009-04-20 Q16 http://www.imagemagick.org"