Ruby script to quickly shorten a url using the bit.ly API. The only requirements are the bitly and clipboard gems, and BITLY_USERNAME and BITLY_API_KEY environment variables

bitly.rb

#!/usr/bin/env ruby

require 'bitly'
require 'clipboard'
require 'uri'

username = ENV['BITLY_USERNAME']
api_key  = ENV['BITLY_API_KEY']
url      = ARGV.shift

unless username && api_key
  puts 'BITLY_USERNAME or BITLY_API_KEY not set'
  exit
end

parsed_url = URI.parse(url)
parsed_url = URI.parse('http://' + url) unless parsed_url.scheme

Bitly.use_api_version_3
bitly = Bitly.new(username, api_key)

response = bitly.shorten(parsed_url)
result = response.short_url if response.respond_to? :short_url

if result
  Clipboard.copy result
  puts "Result copied to clipboard:\n#{result}"
else
  puts 'Could not complete the request'
end