[SOLVED] Which user excutes a script as a result of an active Rule executeCommandLine?

Setup, Configuration and Use Scripts & Rules
1

  • Platform information:

    • Hardware: Raspberry Pi 3
    • OS: Linux openHABianPi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l
    • Java Runtime Environment: openjdk version “1.8.0_152”
    • openHAB version:2.4.0-1 (Release Build)

  • Issue of the topic:

As a complete newcomer, I tried to write my first rule. Under /etc/openhab2/rules/default.rules I have

rule "Algu ha entrat"
when
    Item Porta_terrassa changed from CLOSED to OPEN
then
    executeCommandLine("/home/openhabian/scripts/portaoberta.sh")
end

The script does nothing else but to add a timestamp in a log file:

#!/bin/bash
echo "Door opened at $(date)" >> /home/openhabian/scripts/log

If I run the script on the command line it does what it should.

Looking at the logs I see:

2019-02-24 18:51:42.567 [vent.ItemStateChangedEvent] - Porta_terrassa changed from CLOSED to OPEN
2019-02-24 18:51:42.620 [INFO ] [lipse.smarthome.io.net.exec.ExecUtil] - executed commandLine '/home/openhabian/scripts/portaoberta.sh'

But I do not see any update in the log file… unless I do

chmod a+rw log

My question is: under which user/group is the command line issued? I would prefer the log file to just have the necessary permissions and nothing more.

Thanks in advance!

2

Since openHAB is run as user “openhab” the rules are run also by user “openhab”.

3

I see now that the default login name in OpenHabian is “openhabian”, which is of course different from “openhab”. facepalm

Will try to adjust file permissions accordingly.

Thanks!

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