External Commands Reference - CHANGE_CUSTOM_HOST_VAR
CHANGE_CUSTOM_HOST_VAR;host_name;varname;varvalue
Changes the value of a custom host variable.
#!/bin/sh
# This is a sample shell script showing how you can submit the CHANGE_CUSTOM_HOST_VAR command
# to Naemon. Adjust variables to fit your environment as necessary.
# This will change value of the custom variable: $_HOSTSOMEVAR$
printf "[%lu] CHANGE_CUSTOM_HOST_VAR;host1;SOMEVAR;some new value\n" `date +%s` > /var/lib/naemon/naemon.cmd