My update script for many repositories under current folder, with different scm

update.rb

#!/usr/bin/env ruby
#

def update(dir, type) 
  Dir.chdir(dir)
  puts "Going to update #{dir}"
  system("#{type.to_s} pull")
  Dir.chdir('..')
end

scm = [ :git, :hg ]

Dir['*'].each do |f|
  if File.ftype(f) == 'directory'
     scm.each do |s|
       if Dir[f + "/.#{s.to_s}"][0]
         update(f, s)
         break
       end # if Dir[f + "/.#{s.to_s}"][0]
     end # scm.each do |s|
  end # if File.ftype(f) == 'directory'
end # Dir['*'].each do |f|

puts 'done'