Clean and Update all

git_update_all.rb

#!/usr/bin/env ruby

require 'pp'

# no stdout buffering
STDOUT.sync = true

# checks for windows/unix for chaining commands
OS_COMMAND_CHAIN = RUBY_PLATFORM =~ /mswin|mingw|cygwin/ ? "&" : ";"

Dir.entries('.').select do |entry|
  next if %w{. .. ,,}.include? entry
  if File.directory? File.join('.', entry)
    if File.directory? File.join('.', entry, '.git')
      full_path = "#{Dir.pwd}/#{entry}"
      git_dir = "--git-dir=#{full_path}/.git --work-tree=#{full_path}"
      puts "\nUPDATING '#{full_path}' \n\n"
      puts `git #{git_dir} clean -f #{OS_COMMAND_CHAIN} git #{git_dir} checkout . #{OS_COMMAND_CHAIN} git #{git_dir} pull origin master` 
    end
  end
end