power menu, redshift, polybar

.config/polybar/scripts/pulseaudio-tail/README.md

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+# Script: pulseaudio-tail
+
+A script to control PulseAudio.
+
+The script uses polybar's tail function to display the adjustments in real time. Please note that there is already a polybar module [`pulseaudio`](https://github.com/jaagr/polybar/wiki/Module:-pulseaudio) for this task.
+
+
+## Dependencies
+
+* `pamixer`
+
+Maybe `pavucontrol` is a good idea. In the example it is opened with a right mouse click.
+
+
+## Module
+
+```ini
+[module/pulseaudio-tail]
+type = custom/script
+exec = ~/polybar-scripts/pulseaudio-tail.sh
+tail = true
+click-right = exec pavucontrol &
+click-left = ~/polybar-scripts/pulseaudio-tail.sh --mute &
+scroll-up = ~/polybar-scripts/pulseaudio-tail.sh --up &
+scroll-down = ~/polybar-scripts/pulseaudio-tail.sh --down &
+```

.config/polybar/scripts/pulseaudio-tail/pulseaudio-tail.sh

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+#!/bin/sh
+
+update_sink() {
+    sink=$(pacmd list-sinks | sed -n '/\* index:/ s/.*: //p')
+}
+
+volume_up() {
+    update_sink
+    pactl set-sink-volume "$sink" +1%
+}
+
+volume_down() {
+    update_sink
+    pactl set-sink-volume "$sink" -1%
+}
+
+volume_mute() {
+    update_sink
+    pactl set-sink-mute "$sink" toggle
+}
+
+volume_print() {
+    update_sink
+
+    active_port=$(pacmd list-sinks | sed -n "/index: $sink/,/index:/p" | grep active)
+    if echo "$active_port" | grep -q speaker; then
+        icon="#1"
+    elif echo "$active_port" | grep -q headphones; then
+        icon="#2"
+    else
+        icon="#3"
+    fi
+
+    muted=$(pamixer --sink "$sink" --get-mute)
+
+    if [ "$muted" = true ]; then
+        echo "$icon --"
+    else
+        echo "$icon $(pamixer --sink "$sink" --get-volume)"
+    fi
+}
+
+listen() {
+    volume_print
+
+    pactl subscribe | while read -r event; do
+        if echo "$event" | grep -qv "Client"; then
+            volume_print
+        fi
+    done
+}
+
+case "$1" in
+    --up)
+        volume_up
+        ;;
+    --down)
+        volume_down
+        ;;
+    --mute)
+        volume_mute
+        ;;
+    *)
+        listen
+        ;;
+esac