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willnet/create_image.rb

Created March 27, 2015 11:59
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create image whose file size you can specify for test
Raw
create_image.rb
#
# brew install imagemagick exiftool
#
system('convert -size 128x128 xc:blue test.jpg')
file_size = 1_048_576 - 448
ascii = ('a'..'z').to_a + ('A'..'Z').to_a + ('0'..'9').to_a
File.open('random.txt', 'w') do |file|
file.write(file_size.times.map { ascii.sample }.join)
end
puts `exiftool test.jpg -comment\\<=random.txt`
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