gistfile1.rb

require 'net/http'
require 'rexml/document'
require 'date'

namespace :twitter do
  DEFAULT_SCREEN_NAME = 'LiquidConcept'
  DEFAULT_COUNT = 10

  desc "Return last twitts for screen name, use env to configure: TWIT_SCREEN_NAME
        (default: #{DEFAULT_SCREEN_NAME}), TWIT_COUNT (default: #{DEFAULT_COUNT})."
  task :timeline do
    screen_name = ENV['TWIT_SCREEN_NAME'] || DEFAULT_SCREEN_NAME
    count = ENV['TWIT_COUNT'] || DEFAULT_COUNT
  
    # code to get and print last twitts...
  end
end

gistfile2.rb

require 'net/http'
require 'rexml/document'
require 'date'

task :default => [:timeline]

DEFAULT_SCREEN_NAME = 'LiquidConcept'
DEFAULT_COUNT = 10

desc "Return last twitts for screen name, use env to configure: TWIT_SCREEN_NAME
      (default: #{DEFAULT_SCREEN_NAME}), TWIT_COUNT (default: #{DEFAULT_COUNT})."
task :timeline do
  screen_name = ENV['TWIT_SCREEN_NAME'] || DEFAULT_SCREEN_NAME
  count = ENV['TWIT_COUNT'] || DEFAULT_COUNT

  # code to get and print last twitts...
end

gistfile3.rb

  # code to get and print last twitts...
  if result = Net::HTTP.get(URI.parse("http://twitter.com/statuses/user_timeline.xml
                                       ?screen_name=#{screen_name}&count=#{count}"))
    status = REXML::Document.new(result)

    puts "Twitts from #{screen_name}:"
    status.elements.to_a("statuses/status").collect do |e|
      {
        :date => DateTime.parse(e.elements["created_at"].text),
        :text => e.elements["text"].text
      }
    end.sort{|a, b| a[:date] <=> b[:date]}.each do |status_element|
      puts status_element[:date].strftime("%d.%m.%Y %H:%M | #{status_element[:text]}")
    end
  else
    puts "nothing"
  end

gistfile4.rb

require 'net/http'
require 'rexml/document'
require 'date'

class Twitter < Thor
  DEFAULT_SCREEN_NAME = 'LiquidConcept'
  DEFAULT_COUNT = 10
  
  desc "timeline", "Return last twitts for screen name"
  method_option :screen_name, :aliases => ["-s"], :type => :string, :required => false,
                :default => DEFAULT_SCREEN_NAME, :desc => "The twitter screen name"
  method_option :count, :aliases => ["-c"], :type => :numeric, :required => false,
                :default => DEFAULT_COUNT, :desc => "The number of twitts to fetch"
  def timeline
    screen_name = options[:screen_name]
    count = options[:count]
    
    # code to get and print last twitts...
  end
end

gistfile5.rb

class Namespace < Thor
  default_task :target

  desc "target", "target description"
  def target
    # commands
  end
end

gistfile6.rb

#

Rakefile

require 'rake/packagetask'

Rake::PackageTask.new("myapp", "1.2.3") do |p|
  p.need_tar_bz2 = true
  p.package_files.include("README")
  p.package_files.include("lib/**/*.rb")
end