# usermod -a -G icingacmd www-data
+> **Note**
+>
+> Debian packages use `nagios` as default user/group. Therefore change `icingacmd` to
+> `nagios`.
+
> **Note**
>
> Change "www-data" to the user you're using to run queries.
# usermod -G -a icingacmd www-data
+> **Note**
+>
+> Debian packages use `nagios` as default user/group. Therefore change `icingacmd` to
+> `nagios`.
+
### <a id="external-command-list"></a> External Command List
A list of currently supported external commands can be found on the