SUPER easy newbie question

hello -

i know virtually nothing about ruby, other than to appreciate the
language syntax.

i tried to git-clone mysql2xxxx and i get the following error:

mysql2csv --help ;

/usr/share/rubygems/rubygems/core_ext/kernel_require.rb:55:in ‘require’:
cannot load such file – active_support (LoadError)
from blah blah
from blah blah
from ./mysql2csv:3:in ‘’

this looks like some sort of simple library reference error that has to
do with my total ignorance in setting up ruby.

i tried setting RUBYLIB to where the mysql2xxxx files live with no


ruby -v
ruby 2.0.0p598 (2014-11-13) [x86 64-linux]

Hi Mark,

You are missing active_support gem

The app you are trying to run uses either rails or some sort of rails
base gems like active_record.

Make sure you have installed it.
gem install activesupport

You also can check rbenv and/or rvm for managing ruby gems when you have