This script retrieves temperature readings from specified sensors, compares them to a threshold, and sends a notification to a specified ntfy.sh channel with the priority level indicating the severity. I recommend adding it to your crontab.

sensors_ntfy.sh

#!/bin/bash

channel="https://ntfy.sh/YOURTOPICHERE"

sensors=(
  "nvme-pci-0900:Composite"
  # Add as many sensors as you want here
)

threshold=55

# Extract the temperature value from the JSON output of sensors command
get_temperature() {
  sensor_name="$1"
  attribute="$2"

  value=$(sensors -j | jq -r --arg sensor "$sensor_name" --arg attr "$attribute" '.[$sensor][$attr]["temp1_input"]')

  echo "$value"
}

notify() {
  priority=1
  message=""

  # Loop through the sensors to construct the notification message
  for sensor in "${sensors[@]}"; do
    # Split the sensor name and attribute
    IFS=':' read -r -a parts <<< "$sensor"
    sensor_name="${parts[0]}"
    attribute="${parts[1]}"

    # Get the current value of the attribute using get_temperature function
    value=$(get_temperature "$sensor_name" "$attribute")

    # Construct the sensor information for the notification message
    sensor_info="$sensor_name at $value"

    # Check if the value exceeds the threshold
    if (( $(echo "$value > $threshold" | bc -l) )); then
      priority=4
    fi

    # Append the sensor information to the notification message
    message=$(echo -e "$message\n$sensor_info")
  done

  curl -X POST -H "Content-Type: application/json" -H "Tags: satellite" -H "X-Priority: $priority" -H "X-Title: $(hostname) Sensors Report" -d "$message" "$channel"
}

notify