gistfile1.rb

#!/usr/bin/env ruby -w

require 'yaml'

users = YAML::load(File.open(File.join(File.expand_path('~/'), '.twitrc'), 'r'))
user   = users.find {|u| u[:name] == ARGV[0]}

if (not user.empty?)
  post   = ARGV[1..-1].join(' ')
  bark   = %[curl -u #{user[:name]}:'#{user[:password]}' -d status="#{post}" http://twitter.com/statuses/update.json]
  result = %x[#{bark}]
end