masspull.rb

#! /usr/bin/env ruby

# Pull all directory under current directory, if it's on master, has no local changes, can be pulled fast-forward.

def git_repo?
  `git status`.chomp !~ /Not a git repository/
end

def not_changed?
  `git status -s`.chomp.empty?
end

def master?
  # .gitconfig
  # current-branch  = "!sh -c \"git branch | grep '*' | awk '{ print \\$2 }' \""
  `git current-branch`.chomp == 'master'
end

Dir['./*'].select {|d| File.directory? d }.each do |d|
  Dir.chdir d do
    if git_repo? && not_changed? && master?
      puts `git pull --ff-only`
    end
  end
end