Relevant part of the Clearcap gem by ClearSight Studio. Use as you see fit. MIT license. Clearcap will likely be open sourced sometime in the future after some cleanup.

common.rb

#!/bin/env ruby
# encoding: utf-8
require 'optparse'

options = {}

OptionParser.new do |opts|
  opts.banner = "Usage: -v for verbose mode."

  options[:verbose] = false
  opts.on( '-v', '--verbose' ) do
    options[:verbose] = true
  end
end.parse!


configuration = Capistrano::Configuration.respond_to?(:instance) ? Capistrano::Configuration.instance(:must_exist) : Capistrano.configuration(:must_exist)

configuration.load do

  set :use_sudo, false
  set :scm, :git
  default_run_options[:pty] = true

  after "deploy:finalize_update", "deploy:migrate"
  after "deploy:restart", "deploy:cleanup"

  namespace :notifications do
    desc <<-EOD
      [internal] Shows a success message when done deploying.
    EOD
    task :success do
      require "growl"
      if Growl.installed?
        Growl.notify "#{application} deployed successfully to #{rails_env}.", title: 'Capistrano', sticky: true
      end
    end
  end

  if options[:verbose] == true
    logger.level = Capistrano::Logger::DEBUG
  else

    require "colored"
    logger.level = Capistrano::Logger::IMPORTANT

    STDOUT.sync

    before "deploy:update_code" do
      @begin = Time.now
      puts  "Deploying".cyan;
    end
    
    before "bundle:install" do
      print "Bundling"

      @start_time = Time.now.to_i

      Thread.new do
        while @bundled != true
          print "."
          sleep 1.5
        end
      end
    end
    
    after "bundle:install" do
      @bundled = true
      print  "✔".green
      puts " -- [#{Time.now.to_i - @start_time} secs]"
    end

    before "deploy:migrate" do
      print "Migrating"

      @start_time = Time.now.to_i

      Thread.new do
        while @migrated != true
          print "."
          sleep 1.5
        end
      end
    end
    
    after "deploy:migrate" do
      @migrated = true
      print "✔".green
      puts " -- [#{Time.now.to_i - @start_time} secs]"
    end
    
    before "deploy:assets:clean" do
      print "Cleaning"

      @start_time = Time.now.to_i

      Thread.new do
        while @cleaned != true
          print "."
          sleep 1.5
        end
      end
    end
    
    after "deploy:assets:clean" do
      @cleaned = true
      print "✔".green
      puts " -- [#{Time.now.to_i - @start_time} secs]"
    end
    
    before "deploy:assets:precompile" do
      print "Compiling"

      @start_time = Time.now.to_i

      Thread.new do
        while @compiled != true
          print "."
          sleep 1.5
        end
      end
    end
    
    after "deploy:assets:precompile" do
      @compiled = true
      print "✔".green
      puts " -- [#{Time.now.to_i - @start_time} secs]"
    end
    
    after "deploy:update_code" do puts  "Deploy Complete......✔".green end
    
    before "deploy:restart" do
      print "Restarting"

      @start_time = Time.now.to_i

      Thread.new do
        while @restarted != true
          print "."
          sleep 1.5
        end
      end
    end
    
    after "deploy:restart" do
      @restarted = true
      print "✔".green
      puts " -- [#{Time.now.to_i - @start_time} secs]"

      puts "\nDeploy Time: #{Time.now.to_i - @begin.to_i} seconds"
    end

    after "deploy:restart", "notifications:success" # Show a growl

  end

end