This assumes you have a twilio account and have purchased/reserved a phone number...
If you are using bundler add the following line to your Gemfile to include
twilio-ruby in your project:
gem install twilio-ruby on the command line. You might need
sudo if you're using system Ruby and not ruby-env etc.
and the code
# Instantiate a Twilio REST client with your account SID and auth token, # which can be found on your dashboard. client = Twilio::REST::Client.new("your_account_sid", "your_auth_token") client.messages.create(from: "+15556667777", to: "+15558883333", body: "Hello, world!")