Posts by aldebaranhg

i copied the code exactly. Maybe some characters (space) got into it through later editing (google translater).
Sorry, I still have to learn how to correctly compose my posts!
I think the python interpreter cannot recognize the expression os.system..... The normal shellcommando

LibreELEC: ~ # os.system ("echo" Raspberry Pi Shutdown! "> / Dev / pts / 0")
sh: syntax error: unexpected word (expecting ")") does not work under Libreelec either.

with LibreELEC: ~ / .config # echo "3456"> / dev / pts / 0
3456
can I send texts between logged-in terminals.

to your question:
the script powershutdown_serialless shuts down the raspi at power off. That works fine. I can also do without the additional issue of a message.

when I start the script manually:
LibreELEC: ~ / .kodi / userdata / scripts # python powershutdown_serialless.py &
LibreELEC: ~ / .kodi / userdata / scripts # Safe Shutdown in the case of Powerfailure (CTRL-C for exit)
Here you can also see that the script is working properly:
messages are issued.
Case 1 momentary power failure
LibreELEC: ~ / .config #
LibreELEC: ~ / .config # Raspberry Pi Powerfail detected
Raspberry Pi Power Back Detected!

Case 2 long failure power
LibreELEC: ~ / .config #
LibreELEC: ~ / .config # Raspberry Pi Powerfail detected
Raspberry Pi Shutdown!

The main thing is that the script is started automatically and works properly.
Thanks again

additive
sh /storage/.config/autostart.sh results in:
LibreELEC: ~ # sh /storage/.config/autostart.sh
LibreELEC: ~ # File "/storage/.kodi/userdata/scripts/powershutdown_serialless.py", line 51 os.system ("echo" Raspberry Pi Shutdown! "> / dev / pts / 1") ^
SyntaxError: invalid syntax

thank you for your prompt reply
Unfortunately I don't get any output on my terminal (MobaXterm via ssh)
when I insert the new line:
if x> = ShutdownTimer:

print ("Raspberry Pi Shutdown!")

os.system ("echo" Raspberry Pi Shutdown! "> / dev / pts / 1")

time.sleep (5)

os.system ("shutdown -h now")

the modified script is no longer executed - no display of 687 root 0:00 python /storage/.kodi/userdata/scripts/powershutdown_serialless.py
more about the processes at ps -ef

I also tried to add a waiting time so that the message could be read, but it didn't work either.

the problem was definitely autostart.sh

I logged in with a terminal program (mobaxterm) and the /storage/.config/autostart.sh file was just one line
python /storage/.kodi/userdata/scripts/powershutdown_serialless.py &

created and the rights set with chmod.
the command is now executed correctly. after entering ps -ef i can also see the running process. 566 root 0:00 python /storage/.kodi/userdata/scripts/powershutdown_serialless.py

it would be nice if a message could be sent to all logged-in terminals in the event of a power failure - is that possible?

the print commands from the powershutdown_serialless.py script do not arrive on a logged-in terminal

Many Thanks

I installed libreelec using image

Thesystem boots automatically into KODI.

if i login over ssh with MobaXterm 20.6 i see:

LibreELEC (official): 9.2.6 (RPi4.arm)

LibreELEC:~ #

So I would like to control my ambilight at the same time via hyperion.ng

In order to shutdown the Raspi automatically when switching off power

I use the hardware extension "StromPi3".

Therefore a python script ("powershutdown_serialless.py)must be

executed when starting up the Raspi.

In the forum I found the post by "jakob" from June 13, 2020 and then made all

the settings :

- install "Raspberry Pi Tools" add-on

- create the folder /storage/.kodi/userdata/scripts

- insert lines in my powershutdown_serialless.py

import sys

sys.path.append('/storage/.kodi/addons/virtual.rpi-tools/lib')

- put powershutdown_serialless.py into /storage/.kodi/userdata/scripts

- create /storage/.config/autostart.sh

both files attached in the datei.zip.

When i start the powershutdown_serialless.py from an ssh terminal see hier :

LibreELEC (official): 9.2.6 (RPi4.arm)

LibreELEC:~ #

LibreELEC:~ # python /storage/.kodi/userdata/scripts/powershutdown_serialless.py &

LibreELEC:~ # Safe Shutdown in the case of Powerfailure (CTRL-C for exit)

it works fine. But on booting the raspi the script "powershutdown_serialless.py"

is not executed.

Where is the mistake ?

many thanks for the support