Exec Binding Python Script

Add-ons Bindings
1

Hi,
I’m trying to start a python script with exec command.
I have openhabian on my raspberry pi 3 and Version 2.5.10 running.
I installed the Exec-Binding via Paper UI

First I added a things in a new *.things file:

Thing exec:command:intertechnoB1 [command="/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 %2$s", interval=0, timeout=5, autorun=true]

And I added a item:

String Deckenlampe "Deckenlampe" <light> {channel="exec:command:intertechnoB1:input", autoupdate="true"}

sitemap:

Switch item=Wohnzimmer_Deckenlampe mappings=[ON="ON", OFF="OFF"]

When I tried to start it I got en error with the whitelist and I added the command to the whitelist.

Tried to execute '/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 %2$s', but it is not contained in whitelist.

Then I got en error with RegEx Transformation an I added the RegEx to my addons.

Now I have no error but nothing happens.

I testet the command as openhabian@openhab and it worked:

/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 on

So adding the user openhab to the sudoers with no password should help.

sudo visudo -f /etc/sudoers.d/010_pi-nopasswd

Adding following lines

openhab ALL=(ALL) NOPASSWD: ALL

Then I tested as openhab@openhab:

sudo su - openhab -s /bin/bash

also this works in the shell.

Now I have no Idea. Any other ideas?

2

Try without exec-binding:

executeCommandLine("/usr/bin/python /etc/openhab2/scripts/my_script.py update", 10000)
3

thx a lot.
I have tested this execute Command and it works!
I had to create a rule for that or is there an other way to use “executeCommandLine” ?

4

I put these two lines to the whitelist:

/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 on
/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 off

And I added these 2 rules:

rule "Deckenlicht aus"
when
    Item Deckenlampe received command ON
then
    executeCommandLine("/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 on", 1000)
end

rule "Deckenlicht an"
when
    Item Deckenlampe received command OFF
then
    executeCommandLine("/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 off", 1000)
end

Now it works like I expected.

But does anybody know how to do it with this exec binding?

5

It is not necessary.

6

The command in the white list needs to exactly match the command as you have it defined in your thing, complete with the %2$s stuff. So it should be

/usr/bin/python /etc/openhab2/services/senditgw433.py B 1 %2$s

The whitelist is not used with executeCommandLine.

I couldn’t say why it’s not working with the Exec binding.

7

Thank you for your reply.
The solution with “executeCommandLine” works for me. And you are right it is not necessary to put them to the whitelist.

I checked the whitelist entry for the exec binding and it is exactly the same and it dosn’t work.
So I can uninstall exec-binding and RegEx.
I think it’s too complicated for a newbie.