bash script to keep mouse activity

Task: Write bash script to keep mouse activity

Solution:

Use next script body commands:

#!/bin/bash

#
# Emulating movement of mouse (randomly move up or 
# down or left or right to 1 pixel every 10 seconds).
#

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

echo "Using ${_dev}"

while [ true ]
do
        sleep 10
        case $(($RANDOM%4)) in
          0)
            echo "Up"
            /usr/bin/evemu-event ${_dev} --type EV_REL --code REL_Y --value -1 --sync
            ;;
          1)
            echo "Down"
            /usr/bin/evemu-event ${_dev} --type EV_REL --code REL_Y --value 1 --sync
            ;;
          2)
            echo "Left"
            /usr/bin/evemu-event ${_dev} --type EV_REL --code REL_X --value -1 --sync
            ;;
          3)
            echo "Right"
            /usr/bin/evemu-event ${_dev} --type EV_REL --code REL_X --value 1 --sync
            ;;
        esac
done

Put code above into some keep-mouse-activity.sh file;
Set executable attributes and run it;

Done.