Can't find Magick-config in /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/var/yr/truck/yrservice
解決: apt-get install graphicsmagick-libmagick-dev-compat
然後又報:Can't install RMagick 2.13.1. Can't find MagickWand.h.
解決辦法:apt-get install imagemagick apt-get install libmagickwand-dev graphicsmagick-imagemagick-compat
然後再gem install rmagick