find all git repos and 'git pull' each of them

pull_all_git_repos.rb

#!/usr/bin/env ruby

require 'find'

Find.find("/Users/david/Developer") do |path|
  Dir.chdir(path) do |d| 
    next unless File.exists? ("#{d}/.git")
    puts d
    `git pull` 
    Find.prune
  end if File.directory?(path)
end