[rudder-users] Inventory modules

[Chris]

I'm a bit stuck trying to see if I can migrate our current cfengine 
classes to rudder.  Right now with cfengine, I can define classes based 
on arbitrary commands.  For instance, because of 
https://cfengine.com/dev/issues/3420, I have to use a module to define 
classes based on network location.  This is quite useful.  While I know 
rudder will let you run a command to set variables, I'm not exactly sure 
how I would use this to define classes.  Is there any way to make a 
dynamic group based on the output of a command?