# File lib/specinfra/command/base/mail_alias.rb, line 3
    def check_is_aliased_to(mail_alias, recipient)
      ## if the recipient contains pipes escape them
      ## or egrep will interpret it as an OR
      recipient = recipient.gsub(/\|/, '\|')
      recipient = "[[:space:]]([\"']?)#{recipient}\\1(,|$)"
      "getent aliases #{escape(mail_alias)} | egrep -- #{escape(recipient)}"
    end