# File lib/rails-installer.rb, line 464
  def create_directories
    mkdir_p(File.join(install_directory,'tmp','cache'))
    chmod(0755, File.join(install_directory,'tmp','cache'))
    mkdir_p(File.join(install_directory,'tmp','session'))
    mkdir_p(File.join(install_directory,'tmp','sockets'))
    mkdir_p(File.join(install_directory,'log'))
    File.open(File.join(install_directory,'log','development.log'),'w')
    File.open(File.join(install_directory,'log','production.log'),'w')
    File.open(File.join(install_directory,'log','testing.log'),'w')
  end