Script to rotate the screen and touch devices on modern Linux desktops. Great for convertible laptops.

auto_screen_rotation.sh

#!/bin/bash
# Auto rotate screen based on device orientation

# Receives input from monitor-sensor (part of iio-sensor-proxy package)
# Screen orientation is set based upon accelerometer position
# This script should be added to startup applications for the user

# Rotates modern Linux desktop screen and input devices to match. Handy for
# convertible notebooks. Call this script from panel launchers, keyboard
# shortcuts, or touch gesture bindings (xSwipe, touchegg, etc.).
#
# Using transformation matrix bits taken from:
#   https://wiki.ubuntu.com/X/InputCoordinateTransformation
#

# Based on:
# https://linuxappfinder.com/blog/auto_screen_rotation_in_ubuntu
# https://gist.github.com/mildmojo/48e9025070a2ba40795c

# Requirements:
# sudo apt update
# sudo apt remove -y xserver-xorg-input-libinput
# sudo apt install -y xserver-xorg-input-evdev iio-sensor-proxy inotify-tools evtest xserver-xorg-input-synaptics
# copy input-device-info.sh  and auto_screen_rotation.sh to the same folder
# run ./auto_screen_rotation.sh

# Check if this script is running
result=`ps aux | grep -i "auto_screen_rotation.sh" | grep -v "grep" | wc -l`
if [ $result -gt 2 ]
   then
        echo "Script is already running"
        exit 0
   else
   	echo "Starting Script"
fi

# Configure these to match your hardware (names taken from `xinput` output).
TOUCHPAD='SynPS/2 Synaptics TouchPad'
TOUCHSCREEN='HID TOUCH HID Touch Panel Touchscreen'

function do_rotate
{
  # Detecting multi sreens
  screensCount=$(xrandr | grep -sw "connected" | wc -l)
  if [ $screensCount -gt 1 ]; then
    echo "Multi Screens Detected. Ignoring"
    #echo "Multi Screens Detected. Ignoring" >> /tmp/acceldata.log 2>&1 &
    return
  fi
  
  #echo "Rotate : $1"   >> /tmp/acceldata.log 2>&1 &
      
  xrandr --current --verbose -o $1

  TRANSFORM='Coordinate Transformation Matrix'

  case "$1" in
    normal)
      [ ! -z "$TOUCHPAD" ]    && xinput set-prop "$TOUCHPAD"    "$TRANSFORM" 1 0 0 0 1 0 0 0 1
      [ ! -z "$TOUCHSCREEN" ] && xinput set-prop "$TOUCHSCREEN" "$TRANSFORM" 1 0 0 0 1 0 0 0 1
      ;;
    inverted)
      [ ! -z "$TOUCHPAD" ]    && xinput set-prop "$TOUCHPAD"    "$TRANSFORM" -1 0 1 0 -1 1 0 0 1
      [ ! -z "$TOUCHSCREEN" ] && xinput set-prop "$TOUCHSCREEN" "$TRANSFORM" -1 0 1 0 -1 1 0 0 1
      ;;
    left)
      [ ! -z "$TOUCHPAD" ]    && xinput set-prop "$TOUCHPAD"    "$TRANSFORM" 0 -1 1 1 0 0 0 0 1
      [ ! -z "$TOUCHSCREEN" ] && xinput set-prop "$TOUCHSCREEN" "$TRANSFORM" 0 -1 1 1 0 0 0 0 1
      ;;
    right)
      [ ! -z "$TOUCHPAD" ]    && xinput set-prop "$TOUCHPAD"    "$TRANSFORM" 0 1 0 -1 0 1 0 0 1
      [ ! -z "$TOUCHSCREEN" ] && xinput set-prop "$TOUCHSCREEN" "$TRANSFORM" 0 1 0 -1 0 1 0 0 1
      ;;
  esac
}

# Clear sensor.log and acceldata.log so it doesn't get too long over time
> /tmp/sensor.log
#> /tmp/acceldata.log

# Launch monitor-sensor and store the output in a variable that can be parsed by the rest of the script
monitor-sensor >> /tmp/sensor.log 2>&1 &

# Get accelerometer input device info
#source input-device-info.sh
#MY_DEVICE_PATH=$(inputDeviceEventHandlerPath "cmpc_accel_v4")
#echo 'MY_DEVICE_PATH:' ${MY_DEVICE_PATH}

# Read accelerometer data stream
#cat ${MY_DEVICE_PATH} >> /tmp/acceldata.log 2>&1 &

# Parse output or monitor sensor to get the new orientation whenever the log file is updated
# Possibles are: normal, bottom-up, right-up, left-up
# Light data will be ignored
while inotifywait -e modify /tmp/sensor.log; do
# Read the last line that was added to the file and get the orientation
ORIENTATION=$(tail -n 1 /tmp/sensor.log | grep 'orientation' | grep -oE '[^ ]+$')

# Set the actions to be taken for each possible orientation

case "$ORIENTATION" in
normal)
do_rotate normal ;;
bottom-up)
do_rotate inverted ;;
right-up)
do_rotate right ;;
left-up)
do_rotate left ;;
esac
done 

This gist was my inspiration to create this:
https://github.com/undg/autorotate

You should referer this project in your project readme.