Rake task that bumps a cookbook's version for development, because I was already making rake tasks erstwhile.

Rakefile

desc "Updates the metadata for development version"
task :devversion do
  Dir.chdir ENV['PWD']
  md_file = File.join(ENV['PWD'], "metadata.rb")
  if File.exist?(md_file)

    begin
      require 'chef/cookbook/metadata'
      require 'versionomy'
    rescue LoadError
      raise "Could not find libraries to manipulate versions!"
    end

    md = Chef::Cookbook::Metadata.new
    md.from_file md_file
    current_version = Versionomy.parse(md.version)
    fi = File.read(md_file)

    unless current_version.tiny.odd?
      bump_ver = current_version.bump(:tiny)
      puts "Incrementing #{File.basename Dir.pwd} version to #{bump_ver.to_s}"
      fi.gsub!(md.version.to_s, bump_ver.to_s)
      fo = File.open(md_file, 'w') {|file| file.puts fi}
      sh("git diff")
      sh("git status")
      puts "Commit these changes?"
      input = STDIN.gets.chomp
      if input == 'y'
        sh("git add metadata.rb")
        sh("git commit -m 'increment version for development'")
      end

    end

  else
    puts  "Could not find metadata.rb in #{Dir.pwd}, are you in a cookbook?"
    exit 1
  end
end