fake presence to fool websites such colab by moving mouse randomly

keep-presence.sh

#!/bin/bash

_dev=$(ls -1 /dev/input/by-id/*event-mouse | tail -1)
[ -z "${_dev}" ] && echo "Cannot find mouse event device" && exit 1
echo "Using ${_dev}"

IS_MOVE=1
X_PIXELS=0
Y_PIXELS=0
while [ true ]
do
	sleep 10

	# Move mouse.
	if [ $IS_MOVE == 1 ]; then
		IS_MOVE=0
		X_PIXELS=$(echo $((-50 + $RANDOM % 100)))
		Y_PIXELS=$(echo $((-50 + $RANDOM % 100)))
	else
		IS_MOVE=1
		X_PIXELS=$((-X_PIXELS))
		Y_PIXELS=$((-Y_PIXELS))
	fi
	/usr/bin/evemu-event ${_dev} --type EV_REL --code REL_X --value $X_PIXELS --sync
	/usr/bin/evemu-event ${_dev} --type EV_REL --code REL_Y --value $Y_PIXELS --sync
	
	# Mouse click.
	/usr/bin/evemu-event ${_dev} --type EV_KEY --code BTN_LEFT --value 1 --sync
	/usr/bin/evemu-event ${_dev} --type EV_KEY --code BTN_LEFT --value 0 --sync

	echo -n "#"
done