# File lib/specinfra/command/base/cron.rb, line 3
    def check_has_entry(user, entry)
      entry_escaped = entry.gsub(/\\/, '\\\\\\').gsub(/\*/, '\\*').gsub(/\[/, '\\[').gsub(/\]/, '\\]')
      grep_command = "grep -v '^[[:space:]]*#' | grep -- ^#{escape(entry_escaped)}$"
      if user.nil?
        "crontab -l | #{grep_command}"
      else
        "crontab -u #{escape(user)} -l | #{grep_command}"
      end
    end