sync_and_rebuild_subdir_jekylls.rb

#!/usr/bin/env ruby

# Jekyll sync and rebuild sites in subdirs

path = Dir.pwd
Dir.glob('*/').each do |website_dir|
  Dir.chdir path + '/' + website_dir
  puts "\e[32m#{Dir.pwd}\e[0m"

  output = `git pull`
  if result.match(/Already up\-to\-date\./)
    puts 'Nothing to change'
    next
  end
  puts output

  `git submodule update --init`

  puts `jekyll build`
end