Just an FYI if it helps. I found an easy way to make a fully portable
USB version of Jruby with a portable shell to easily manage your
Download jruby as usual from jruby.org the zip file
Extract this to your portable device mine was E:\
Download Console2 from sourceforge.
Extract it to the E:\Jruby folder
Double click on the console app on your E drive and it should open to
the current location.
Then set your path.
You can now install your gems to your usb drive or anything else you
Jruby -S gem install rspec rake cucumber
You can check if it is working for you as your gems installed with
the above command should be installed to: