Insert 10 counted messages anywhere

counted_msg.js

//use as: sh -c 'sleep 0.3; xdotool type "$(node counted_msg.js)"; xdotool key KP_Enter'
const fs = require('fs');
const counterPath = '/home/bwindels/Temp/counter';
function getCounter() {
	const str = fs.readFileSync(counterPath, 'utf8');
	return parseInt(str, 10);
}

function setCounter(n) {
	fs.writeFileSync(counterPath, n.toString(), {flag: 'w'});
}

if (!fs.existsSync(counterPath)) {
	setCounter(0);
}

let n = getCounter();
n = n + 1;
setCounter(n); 
process.stdout.write('event number '+n);

counted_msg.sh

#!/bin/sh
# Insert global shortcut (e.g. Ctrl + Super + M) in gnome keyboard settings with command:
# sh -c <location>/counted_msg.sh
LOCATION=$(readlink -f $(dirname $0))

node counted_msg.js | xclip -selection clipboardse
sleep 0.3

for i in {1..10}
do
  # 
	xdotool type "$(node $LOCATION/counted_msg.js)"
	xdotool key --delay 300 KP_Enter
done

Linux only and you'll need nodejs installed