===== OS independent examples =====
Note: These examples should work on *nix boxes since they generally make use of Posix commands. 


===== Miscellaneous =====
=== check DNS MX record === 
The following example is kindly provided by coffy from the german Nagios forum:
  * First parameter: domain which MX record should be checked
  * Second parameter: mail server to serve this mail domain
<code>check_generic -n mx_dns -e "nslookup -querytype=mx $ARG1$ | grep 'mail exchanger' | awk '{print \$6}'"  -c '!~/$ARG2$\./'

</code>