#!/bin/bash

[ -e "/tmp/lockscrot.png" ] && sudo rm /tmp/lockscrot.png
[ -e "/etc/lightdm/lockscreen.png" ] && sudo rm /etc/lightdm/lockscreen.png

scrot -e 'sudo mv -f $f /tmp/lockscrot.png'
sudo convert /tmp/lockscrot.png -filter Gaussian -blur 0x15 /etc/lightdm/lockscreen.png
dm-tool lock