Add a waybar script for reading temperature in Linux.

ansible/roles/waybar/files/waybar_scripts/waybar_temperature_linux.bash

@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+#
+# Read temperature status in Linux
+set -euo pipefail
+IFS=$'\n\t'
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+SLEEP_INTERVAL=${SLEEP_INTERVAL:-30}
+
+function print_all_x86_pkg_temps {
+    for thermal_zone in /sys/class/thermal/thermal_zone*; do
+        local thermal_zone_type=$(cat "$thermal_zone/type")
+        if [ "$thermal_zone_type" != "x86_pkg_temp" ]; then
+            continue
+        fi
+        local thermal_zone_temperature=$(cat "$thermal_zone/temp")
+        echo "$thermal_zone_temperature"
+    done
+}
+
+while true; do
+    sum_temperature=0
+    num_temperature=0
+    max_temperature=0
+    while read temp; do
+        numeric_temp=$(bc -s <<<"$temp / 1000.0")
+        sum_temperature=$(bc -s <<<"$sum_temperature + $numeric_temp")
+        num_temperature=$((num_temperature + 1))
+        max_temperature=$(bc <<EOF
+define max(a,b){
+  if(a>b)
+  {
+   return(a)
+  }else{
+   return(b)
+  }
+}
+max($max_temperature,$numeric_temp)
+EOF
+                       )
+    done<<<$(print_all_x86_pkg_temps)
+    avg_temperature=$(bc -s <<<"$sum_temperature / $num_temperature")
+    tooltip=""
+    class=""
+    icon="🌡"
+
+    jq --unbuffered --compact-output <<EOF
+{
+"text":"${max_temperature}℃ ${icon}",
+"tooltip":"${tooltip//$'\n'/\\n}",
+"percentage":50,
+"class":"${class}"
+}
+EOF
+    sleep $SLEEP_INTERVAL
+done

ansible/roles/waybar/tasks/linux.yaml

@@ -19,3 +19,5 @@
       dest: /usr/local/bin/waybar_custom_available_memory
     - src: waybar_sound_linux.bash
       dest: /usr/local/bin/waybar_custom_sound
+    - src: waybar_temperature_linux.bash
+      dest: /usr/local/bin/waybar_custom_temperature