sudo apt-get install libmagick9-dev
不然会出
configure: error: Can't install RMagick. Can't find Magick-config or GraphicsMagick-config program.
的错误
必须的一个包
然后
sudo gem install rmagick
ruby script/plugin install http://opensvn.csie.org/rails_file_column/plugins/file_column/trunk
