Shell_sensor work on host, but make error in HA

Configuration
1

Hi i made sensor that must grep file and put result to sensor
content of bash script

 #! /bin/bash
grep $@ $(dirname $(realpath "$0"))/davis_forecast.csv |sed -r 's!^[^,]+!!' |cut -c2-|head -1

On host all work fine:

~$ sh  /usr/share/hassio/homeassistant/python_scripts/davis_forecast.sh 192
В основном облачно и ожидается похолодание. Вероятны осадкив течении 12 ч временами сильные. Ветренно.

and i make sensor

  - platform: command_line
    name: Прогноз погоды
    command: "sh /usr/share/hassio/homeassistant/python_scripts/davis_forecast.sh  192"

And recive in log

2021-07-18 11:51:15 ERROR (SyncWorker_2) [homeassistant.components.command_line] Command failed: sh /usr/share/hassio/homeassistant/python_scripts/davis_forecast.sh  192
2

How did you install Home Assistant? It is probably running inside a docker container, which does not have your script in /usr/share/hassio/homeassistant/python_scripts/. Your config directory should be mounted as /config inside the container, so I would try moving the shell script there (and the csv file it tries to read).
Also, I would put the path to the csv file in quotes in case it contained spaces.

$ shellcheck -
 #! /bin/bash
grep $@ $(dirname $(realpath "$0"))/davis_forecast.csv |sed -r 's!^[^,]+!!' |cut -c2-|head -1

In - line 1:
 #! /bin/bash
^-- SC1114: Remove leading spaces before the shebang.


In - line 2:
grep $@ $(dirname $(realpath "$0"))/davis_forecast.csv |sed -r 's!^[^,]+!!' |cut -c2-|head -1
     ^-- SC2068: Double quote array expansions to avoid re-splitting elements.
        ^-------------------------^ SC2046: Quote this to prevent word splitting.
                  ^--------------^ SC2046: Quote this to prevent word splitting.

For more information:
  https://www.shellcheck.net/wiki/SC1114 -- Remove leading spaces before the ...
  https://www.shellcheck.net/wiki/SC2068 -- Double quote array expansions to ...
  https://www.shellcheck.net/wiki/SC2046 -- Quote this to prevent word splitt...
3

What is your installation method of HA?
If you are using some form of containers, then the path from the host and the path in HA are different.
So, I guess that /usr/share/hassio/homeassistant/python_scripts/davis_forecast.sh is not correct from within the container.

4

yes - there was problem that i ran it wit absolute path. make it relative and it work

BTW how to run script from other path (for example from /home dir)

5

What exactly did you change? Please post your current config of the command line sensor and the contents of your script.
If you are running Home Assistant in a docker container (check with docker ps), I don’t think the /home directories of the host OS will be mounted inside the container.

6
  1. changed shell script to
#! /bin/bash
grep "$@" "$(dirname "$(realpath "$0")")/davis_forecast.csv" |sed -r 's!^[^,]+!!' |cut -c2-|head -1

In my way it’s not critical - i will never make dir or file with spaces in name. But it’s bug.

2. changed sensor

  - platform: command_line
    name: Прогноз погоды
    command: "sh /config/python_scripts/davis_forecast.sh  {{ states('sensor.forecast_rule') }} "

for real sensor i change value 192 to template {{ states(‘sensor.forecast_rule’) }}