<smon>

  <services>

    <service id="pubmed" name="NCBI PubMed page">
      <plugin command="check-url.pl">
        <head-test>
          <url>http://www.ncbi.nlm.nih.gov/pubmed/</url>
        </head-test>
      </plugin>
    </service>

    <service id="memory" name="Memory Check">
      <plugin command="check_mem.pl">
        <args>
          <arg>-u</arg> <!-- check USED memory -->
          <arg>-w</arg> <!-- -w PERCENT   Percent free/used when to warn -->
          <arg>55</arg>
          <arg>-c</arg> <!-- -c PERCENT   Percent free/used when critical -->
          <arg>80</arg>
        </args>
      </plugin>
    </service>

  </services>

</smon>