Cours:BashScript

Ressources

• https://linux.goffinet.org/administration/scripts-shell/
• https://linux.goffinet.org/administration/scripts-shell/
• http://n.grassa.free.fr/cours-linux/shell-scripts/shell-programmation.html

script pour homeAssistant avec broker mqtt

HA mqtt sensor

• https://www.home-assistant.io/integrations/sensor/
• https://github.com/home-assistant/core/blob/dev/homeassistant/const.py#L489

/usr/local/bin/createHaSensor

#!/bin/bash

echo "name : $1"
echo "device class : $2"
echo "unit : $3"

topic="homeassistant/sensor/$1/config"
payload="{\"name\": \"$1\", \
          \"unique_id\": \"$1\", \
          \"state_topic\": \"homeassistant/sensor/$1/state\", \
          \"device_class\":\"$2\", \
          \"unit_of_measurement\":\"$3\" \
         }"

mosquitto_pub -t "$topic" -m "$payload" -h 192.168.0.7

/usr/local/bin/deleteHaSensor :

#!/bin/bash

echo "name : $1"
echo "device class : $2"
echo "unit : $3"

topic="homeassistant/sensor/$1/config"

mosquitto_pub -t "$topic" -m "" -h 192.168.0.7

/usr/local/bin/publishHaSensor :

#!/bin/bash

echo "name : $1"
echo "valeur : $2"

topic="homeassistant/sensor/$1/state"
payload="{\"name\": \"$1\", \
          \"unique_id\": \"$1\", \
          \"state_topic\": \"homeassistant/sensor/$1/state\", \
          \"device_class\":\"$2\", \
          \"unit_of_measurement\":\"$4\" \
         }"


mosquitto_pub -t "$topic" -m "$2" -h 192.168.0.7

Exemples :

• createHaSensor testCreate battery %

publier l'espace utilisé d'une partition

la commande suivante permet d'obtenir l'espace utilisé (en %) de la partition montée sur le dossier /home :

df /home |grep dev |tr -s ' ' |cut -d ' ' -f 9

https://www.ionos.fr/digitalguide/serveur/configuration/pipes-linux/