Rakefile for managing lots of git repositories in one directory.

Rakefile

require "pathname"

GIT_REPOS = Dir["**/.git/.."].map { |path| path = Pathname.new(path).realpath }

desc "Update all repositories"
task :update do
    GIT_REPOS.each do |repo|
        command "git pull origin master", repo
    end
end

def command(cmd, dir = ".")
    Dir.chdir(dir) do
        return `#{cmd}`.chomp
    end
end