How to find position of null in rule?

[rossko57]

Some guidance here

Debugging rules

I’m very new to openhab2 and I have troubles writing my rules. I edit the rule file manually, test run and check in the events.log and openhab.log what’s happening. However it seems as if a rule has a syntax error, it just isn’t executed at all. No error in the logs. So how do I debug my rules in a better way then trial and error?

Debugging Rules with Karaf

Hi, One of my rules is not having the expected result and I’d like to be able to monitor the debugging for this rule but am unsure how to get Karaf to log rules as I was able to see in the console when running start_debug.sh from OH1. Please bear in mind I’m SSHing into a headless machine which is running OH2.

In essence, add logInfo lines to Rules to record progress and values of interest, and find out how to view the logs