Add udev rule: swap caps_lock with escape on usb keyboards

.scripts/inputctl.sh

@@ -40,6 +40,10 @@ EOF
 # If no option is provided
 [ "$#" -eq 0 ] && help && exit
 
+# Set required X variables
+export DISPLAY=:0
+export XAUTHORITY="$XDG_DATA_HOME/xorg/Xauthority"
+
 SCRIPT="$(basename "$0")"
 # Option handling
 while getopts ':h?d:k:s:' opt; do

etc/udev/rules.d/00-usb-keyboard.rules

@@ -0,0 +1,13 @@
+# -*- mode: conf -*-
+
+# When usb keyboard is plugged in, run inputctl script
+# Requires: run as local user with X variables set (DISPLAY and XAUTHORITY)
+
+SUBSYSTEM=="usb",
+	ACTION=="add",
+		ATTRS{idVendor}=="04d9",
+		ATTRS{idProduct}=="0169",
+		OWNER="rick",
+		RUN+="/home/rick/.scripts/inputctl.sh -k on"
+
+# https://wiki.archlinux.org/index.php/Udev#Execute_on_VGA_cable_plug_in