Hello I has read the article The check_snmp Plugin(https://www.monitoring-plugins.org/doc/man/check_snmp.html)for several times,but I have problems where using it. When I used the plugin "check_snmp" to check a device,if the resault is "No Module",I want it send a critical。 The full command like this: ./check_snmp -H 10.10.10.10 -o .1.3.6.1.4.1.12345.17.1.3.1.0 --invert-search "No Module" ./check_snmp -H 10.10.10.10 -o .1.3.6.1.4.1.12345.17.1.3.1.0 --invert-search -s "No Module" ./check_snmp -H 10.10.10.10 -o .1.3.6.1.4.1.12345.17.1.3.1.0 -s --invert-search "No Module" The resault is always like this: SNMP OK - "No Module" | So I wander to konw how to correctly use the plugin check_snmp?