Automatically launch urxvt serial consoles

99-usb-serial-screen.rules

#
# /etc/udev/rules.d/99-usb-serial-screen.rules
#

ACTION!="add", GOTO="usb_serial_screen_end"
KERNEL!="ttyUSB[0-9]*", GOTO="usb_serial_screen_end"
SUBSYSTEM!="tty", GOTO="usb_serial_screen_end"

# List of USB serial devices for which to launch a terminal
ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", GOTO="usb_serial_screen_run"
ATTRS{idVendor}=="0557", ATTRS{idProduct}=="2008", GOTO="usb_serial_screen_run"
ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6001", GOTO="usb_serial_screen_run"

GOTO="usb_serial_screen_end"
LABEL="usb_serial_screen_run"
RUN+="/usr/local/bin/usb-serial-screen.sh --udev '%k' '%N' '%E{ID_MODEL_FROM_DATABASE}'"
LABEL="usb_serial_screen_end"

usb-serial-screen.sh

#!/bin/bash
#
# /usr/local/bin/usb-serial-screen.sh
#
# Triggered by /etc/udev/rules.d/99-usb-serial-screen.rules
#

if [[ "$1" == '--udev' ]]; then
  I3UID="$(ls -1 /run/user/*/i3/ipc-socket.*)"
  [[ "$I3UID" ]] || exit 1
  I3UID=$(($(head -1 <<< "$I3UID" | cut -d/ -f4)))

  if (( UID != I3UID )); then
    shift
    I3USER=$(getent passwd "$I3UID" | cut -d: -f1)
    su -c "export DISPLAY=:0; /usr/local/bin/usb-serial-screen.sh '$1' '$2' '$3'" "$I3USER"
    exit $?
  fi
fi

/usr/bin/i3-msg "exec --no-startup-id /usr/bin/urxvt -title '$1: $3' -e screen -T screen.rxvt -S '$1' '$2' 115200"