Capistrano recipes for remote log viewing

log.rb

namespace :log do
  desc "Search from log files on server"
  task :grep, :roles => :app do
    run "cd #{current_path}/log && grep #{ENV['str']} -B #{ENV['before'] || 5} -A #{ENV['after'] || 35} #{rails_env}.log*"
  end

  desc "Tail log files on servers"
  task :tail, :roles => :app do
    run "tail -f #{shared_path}/log/#{rails_env}.log" do |channel, stream, data|
      puts "#{data}"
      break if stream == :err
    end
  end
end