diff --git a/ruby/quickstart.rb b/ruby/quickstart.rb
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+++ b/ruby/quickstart.rb
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+# Sample Ruby code for user authorization
+
+require 'rubygems'
+gem 'google-api-client', '>0.7'
+require 'google/apis'
+require 'google/apis/youtube_v3'
+require 'googleauth'
+require 'googleauth/stores/file_token_store'
+
+require 'fileutils'
+require 'json'
+
+# REPLACE WITH VALID REDIRECT_URI FOR YOUR CLIENT
+REDIRECT_URI = 'http://localhost'
+APPLICATION_NAME = 'YouTube Data API Ruby Tests'
+
+# REPLACE WITH NAME/LOCATION OF YOUR client_secrets.json FILE
+CLIENT_SECRETS_PATH = 'client_secret.json'
+
+# REPLACE FINAL ARGUMENT WITH FILE WHERE CREDENTIALS WILL BE STORED
+CREDENTIALS_PATH = File.join(Dir.home, '.credentials',
+                             "youtube-quickstart-ruby-credentials.yaml")
+
+# SCOPE FOR WHICH THIS SCRIPT REQUESTS AUTHORIZATION
+SCOPE = Google::Apis::YoutubeV3::AUTH_YOUTUBE_READONLY
+
+def authorize
+  FileUtils.mkdir_p(File.dirname(CREDENTIALS_PATH))
+
+  client_id = Google::Auth::ClientId.from_file(CLIENT_SECRETS_PATH)
+  token_store = Google::Auth::Stores::FileTokenStore.new(file: CREDENTIALS_PATH)
+  authorizer = Google::Auth::UserAuthorizer.new(
+    client_id, SCOPE, token_store)
+  user_id = 'default'
+  credentials = authorizer.get_credentials(user_id)
+  if credentials.nil?
+    url = authorizer.get_authorization_url(base_url: REDIRECT_URI)
+    puts "Open the following URL in the browser and enter the " +
+         "resulting code after authorization"
+    puts url
+    code = gets
+    credentials = authorizer.get_and_store_credentials_from_code(
+      user_id: user_id, code: code, base_url: REDIRECT_URI)
+  end
+  credentials
+end
+
+# Initialize the API
+service = Google::Apis::YoutubeV3::YouTubeService.new
+service.client_options.application_name = APPLICATION_NAME
+service.authorization = authorize
+
+# Sample ruby code for channels.list
+
+def channels_list_by_username(service, part, **params)
+  response = service.list_channels(part, params).to_json
+  item = JSON.parse(response).fetch("items")[0]
+
+  puts ("This channel's ID is #{item.fetch("id")}. " +
+        "Its title is '#{item.fetch("snippet").fetch("title")}', and it has " +
+        "#{item.fetch("statistics").fetch("viewCount")} views.")
+end
+
+channels_list_by_username(service, 'snippet,contentDetails,statistics', for_username: 'GoogleDevelopers')