Bundler install hack

One way to install a gem (not just this one) without needing to sudo it in, is to use Bundler. It also helps to keep different versions of gems installed for different purposes. If you create a Gemfile like the following and put it in a folder ('~/work') for instance then use the binstubs with your PATH environment variable it will act like a system installed application.

source "https://rubygems.org"

gem 'awskeyring'

Then you can run bundle install --without development --binstubs --path=~/.bundle/vendor should install the gems to the vendor path and drop an executable in the '~/bin' folder.