# File lib/specinfra/command/base/user.rb, line 73
    def add(user, options)
      command = ['useradd']
      command << '-g' << escape(options[:gid])            if options[:gid]
      command << '-d' << escape(options[:home_directory]) if options[:home_directory]
      command << '-p' << escape(options[:password])       if options[:password]
      command << '-s' << escape(options[:shell])          if options[:shell]
      command << '-m' if options[:create_home]
      command << '-r' if options[:system_user]
      command << '-u' << escape(options[:uid])            if options[:uid]
      command << escape(user)
      command.join(' ')
    end