如果我运行sudo gem install rmagick，下面是我得到的输出。
Building native extensions. This could take a while...
ERROR: Error installing rmagick:
ERROR: Failed to build gem native extension.
/opt/bitnami/ruby/bin/ruby extconf.rb
checking for Ruby version >= 1.8.5... yes
checking for gcc... yes
checking for Magick-config... yes
Warning: Found more than one ImageMagick installation. This could cause problems at runtime.
/opt/bitnami/common/bin/Magick-config reports version 6.7.5 Q16 is installed in /opt/bitnami/common
/usr/bin/Magick-config reports version 6.6.9 Q16 is installed in /usr
Using 6.7.5 Q16 from /opt/bitnami/common.
checking for ImageMagick version >= 6.4.9... yes
checking for HDRI disabled version of ImageMagick... yes
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
Package MagickCore was not found in the pkg-config search path.
Perhaps you should add the directory containing `MagickCore.pc'
to the PKG_CONFIG_PATH environment variable
No package 'MagickCore' found
checking for stdint.h... yes
checking for sys/types.h... yes
checking for wand/MagickWand.h... no
Can't install RMagick 2.13.2. Can't find MagickWand.h.
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=/opt/bitnami/ruby/bin/ruby
Gem files will remain installed in /opt/bitnami/ruby/lib/ruby/gems/1.9.1/gems/rmagick-2.13.2 for inspection.
Results logged to /opt/bitnami/ruby/lib/ruby/gems/1.9.1/gems/rmagick-2.13.2/ext/RMagick/gem_make.out
它在亚马逊的EC2服务器上。 如果我尝试运行只有gem install rmagick，我会得到：
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions into the /opt/bitnami/ruby/lib/ruby/gems/1.9.1 directory.
“请问您能帮我解决这个问题吗？谢谢。”
“附注：我尝试过以下方法：”
sudo apt-get install libmagickwand-dev
Reading package lists... Done Building dependency tree Reading state information... Done libmagickwand-dev is already the newest version. The following packages were automatically installed and are no longer required: libgraphicsmagick3 libmagick++4 libgraphicsmagick++3 libgraphicsmagick1-dev libgraphics-magick-perl libperl5.14 libgraphicsmagick++1-dev Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 40 not upgraded.sudo apt-get install libmagickwand-dev imagemagick
Reading package lists... Done Building dependency tree Reading state information... Done imagemagick is already the newest version. libmagickwand-dev is already the newest version. The following packages were automatically installed and are no longer required: libgraphicsmagick3 libmagick++4 libgraphicsmagick++3 libgraphicsmagick1-dev libgraphics-magick-perl libperl5.14 libgraphicsmagick++1-dev Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 40 not upgraded.
apt-get install libmagickwand-dev
E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
sudo apt-get install libmagickwand-dev
Reading package lists... Done Building dependency tree Reading state information... Done libmagickwand-dev is already the newest version. The following packages were automatically installed and are no longer required: libgraphicsmagick3 libmagick++4 libgraphicsmagick++3 libgraphicsmagick1-dev libgraphics-magick-perl libperl5.14 libgraphicsmagick++1-dev Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 40 not upgraded.
gem 'rmagick'，'实例中的版本'。我想你可以通过rmagick -v命令获取实例中的版本。 - sitesrmagick -v，我会得到 `抱歉，command-not-found 已崩溃！请在以下网址上提交错误报告： https://bugs.launchpad.net/command-not-found/+filebug 请在报告中包含以下信息：command-not-found 版本：0.2.44` - user984621