ADDED   cycle_asus_fan.sh
Index: cycle_asus_fan.sh
==================================================================
--- cycle_asus_fan.sh
+++ cycle_asus_fan.sh
@@ -0,0 +1,39 @@
+#!/bin/sh
+#
+# Small script to change the performance / fan mode on ASUS laptops and display
+# a notification about it. Can be bound to the fan key of the keyboard in e.g.
+# GNOME.
+# Requires /sys/devices/platform/asus-nb-wmi/throttle_thermal_policy to be owned
+# by the user, e.g. by putting into /etc/tmpfiles.d/asus_fan_perms.conf:
+# z /sys/devices/platform/asus-nb-wmi/throttle_thermal_policy 664 root js - -
+# (Replace js with the primary group of your user)
+#
+
+file="/sys/devices/platform/asus-nb-wmi/throttle_thermal_policy"
+current="$(<$file)"
+new="$(((current + 1) % 3))"
+
+if ! echo "$new" >"$file"; then
+	notify-send -i dialog-error -c device \
+		"Performance Control" \
+		"Failed to change performance profile."
+	exit 1
+fi
+
+case "$new" in
+0)
+	notify-send -i power-profile-balanced -c device \
+		"Performance Control" \
+		"Performance profile changed to normal."
+	;;
+1)
+	notify-send -i power-profile-performance -c device \
+		"Performance Control" \
+		"Performance profile changed to turbo."
+	;;
+2)
+	notify-send -i power-profile-power-saver -c device \
+		"Performance Control" \
+		"Performance profile changed to quiet."
+	;;
+esac