关于安装bettercap的ERROR: Failed to build gem native extension 报错解决

按照bettercap的官方文档安装步骤

sudo gem install bettercap

会有一报错

Fetching: colorize-0.8.1.gem (100%)
Successfully installed colorize-0.8.1
Fetching: pcaprub-0.12.4.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing bettercap:
    ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.3.0/gems/pcaprub-0.12.4/ext/pcaprub_c
/usr/bin/ruby2.3 -r ./siteconf20170211-15377-jpel86.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

安装以下依赖可以解决这个问题

sudo apt-get install ruby-dev libpcap-dev