Pavel bspavel

## Calculate median and average in PHP
<?php
//https://en.wikipedia.org/wiki/Median

function calcAvg($arr)
{
    $avg = (array_sum($arr)/count($arr));
    return $avg;
}

function calcMedian($arr)

## xvfb
XVFB=/usr/bin/Xvfb
XVFBARGS=":1 -screen 0 1024x768x24 -ac +extension GLX +render -noreset"
PIDFILE=/var/run/xvfb.pid
case "$1" in
  start)
    echo -n "Starting virtual X frame buffer: Xvfb"
    start-stop-daemon --start --quiet --pidfile $PIDFILE --make-pidfile --background --exec $XVFB -- $XVFBARGS
    echo "."
    ;;
  stop)

## bytesToSize.js
// from http://scratch99.com/web-development/javascript/convert-bytes-to-mb-kb/
function bytesToSize(bytes) {
    var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
    if (bytes == 0) return 'n/a';
    var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
    if (i == 0) return bytes + ' ' + sizes[i];
    return (bytes / Math.pow(1024, i)).toFixed(1) + ' ' + sizes[i];
};

## install.bash
#!/bin/bash
# Thanks to https://gist.github.com/Lewiscowles1986/ce14296e3f5222082dbaa088ca1954f7

if [ "$(whoami)" != "root" ]; then
	echo "Run script as ROOT please. (sudo !!)"
	exit
fi

echo "deb http://mirrordirector.raspbian.org/raspbian/ stretch main contrib non-free rpi" > /etc/apt/sources.list.d/stretch.list
echo "APT::Default-Release \"jessie\";" > /etc/apt/apt.conf.d/99-default-release

## download_file_save_as.js
// https://stackoverflow.com/questions/23451726/saving-binary-data-as-file-using-javascript-from-a-browser
var sampleBytes = new Int8Array(4096);
var saveByteArray = (function () {
    var a = document.createElement("a");
    document.body.appendChild(a);
    a.style = "display: none";
    return function (data, name) {
        var blob = new Blob(data, {type: "octet/stream"}),
            url = window.URL.createObjectURL(blob);
        a.href = url;

## ZoneMinder installer for Raspberry PI 3B
#!/bin/bash

#Thanks to https://wiki.zoneminder.com/Raspbian

if [ "$(whoami)" != "root" ]; then
	echo "Run script as ROOT please. (sudo !!!)"
	exit
fi

# Disable Wi-Fi and Bluetooth

## IndexedDB101.js
// This works on all devices/browsers, and uses IndexedDBShim as a final fallback
var indexedDB = window.indexedDB || window.mozIndexedDB || window.webkitIndexedDB || window.msIndexedDB || window.shimIndexedDB;

// Open (or create) the database
var open = indexedDB.open("MyDatabase", 1);

// Create the schema
open.onupgradeneeded = function() {
    var db = open.result;
    var store = db.createObjectStore("MyObjectStore", {keyPath: "id"});

## LAMP7.2
#!/bin/bash

#https://ayesh.me/Ubuntu-PHP-7.2
#http://linux-notes.org/ustanovka-mysql-na-debian-ubuntu-linux-mint/
#https://www.digitalocean.com/community/tutorials/apache-ubuntu-14-04-lts-ru
#https://stackoverflow.com/questions/3940909/configure-apache-to-listen-on-port-other-than-80
#https://www.tecmint.com/change-default-mysql-mariadb-port-in-linux/

sudo apt-get update
sudo apt-get upgrade

## Open365
#!/bin/bash

# https://github.com/Open365/Open365
# https://superuser.com/questions/769920/python3-pip-installed-but-pip3-command-not-found

sudo apt-get update
sudo apt-get upgrade

sudo apt-get install -y git vim mc
sudo apt-get install -y python3

## notes-IndexedDB.html
<!DOCTYPE html>
<head>
<script>
var db;
// until we won't need this prefix mess
var indexedDB = window.indexedDB || window.webkitIndexedDB
             || window.mozIndexedDB || window.msIndexedDB;
var IDBTransaction = window.IDBTransaction ||
                     window.webkitIDBTransaction;
	<?php
	//https://en.wikipedia.org/wiki/Median

	function calcAvg($arr)
	{
	$avg = (array_sum($arr)/count($arr));
	return $avg;
	}

	function calcMedian($arr)
	XVFB=/usr/bin/Xvfb
	XVFBARGS=":1 -screen 0 1024x768x24 -ac +extension GLX +render -noreset"
	PIDFILE=/var/run/xvfb.pid
	case "$1" in
	start)
	echo -n "Starting virtual X frame buffer: Xvfb"
	start-stop-daemon --start --quiet --pidfile $PIDFILE --make-pidfile --background --exec $XVFB -- $XVFBARGS
	echo "."
	;;
	stop)
	// from http://scratch99.com/web-development/javascript/convert-bytes-to-mb-kb/
	function bytesToSize(bytes) {
	var sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
	if (bytes == 0) return 'n/a';
	var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
	if (i == 0) return bytes + ' ' + sizes[i];
	return (bytes / Math.pow(1024, i)).toFixed(1) + ' ' + sizes[i];
	};
	#!/bin/bash
	# Thanks to https://gist.github.com/Lewiscowles1986/ce14296e3f5222082dbaa088ca1954f7

	if [ "$(whoami)" != "root" ]; then
	echo "Run script as ROOT please. (sudo !!)"
	exit
	fi

	echo "deb http://mirrordirector.raspbian.org/raspbian/ stretch main contrib non-free rpi" > /etc/apt/sources.list.d/stretch.list
	echo "APT::Default-Release \"jessie\";" > /etc/apt/apt.conf.d/99-default-release
	// https://stackoverflow.com/questions/23451726/saving-binary-data-as-file-using-javascript-from-a-browser
	var sampleBytes = new Int8Array(4096);
	var saveByteArray = (function () {
	var a = document.createElement("a");
	document.body.appendChild(a);
	a.style = "display: none";
	return function (data, name) {
	var blob = new Blob(data, {type: "octet/stream"}),
	url = window.URL.createObjectURL(blob);
	a.href = url;
	#!/bin/bash

	#Thanks to https://wiki.zoneminder.com/Raspbian

	if [ "$(whoami)" != "root" ]; then
	echo "Run script as ROOT please. (sudo !!!)"
	exit
	fi

	# Disable Wi-Fi and Bluetooth
	// This works on all devices/browsers, and uses IndexedDBShim as a final fallback
	var indexedDB = window.indexedDB \|\| window.mozIndexedDB \|\| window.webkitIndexedDB \|\| window.msIndexedDB \|\| window.shimIndexedDB;

	// Open (or create) the database
	var open = indexedDB.open("MyDatabase", 1);

	// Create the schema
	open.onupgradeneeded = function() {
	var db = open.result;
	var store = db.createObjectStore("MyObjectStore", {keyPath: "id"});
	#!/bin/bash

	#https://ayesh.me/Ubuntu-PHP-7.2
	#http://linux-notes.org/ustanovka-mysql-na-debian-ubuntu-linux-mint/
	#https://www.digitalocean.com/community/tutorials/apache-ubuntu-14-04-lts-ru
	#https://stackoverflow.com/questions/3940909/configure-apache-to-listen-on-port-other-than-80
	#https://www.tecmint.com/change-default-mysql-mariadb-port-in-linux/

	sudo apt-get update
	sudo apt-get upgrade
	#!/bin/bash

	# https://github.com/Open365/Open365
	# https://superuser.com/questions/769920/python3-pip-installed-but-pip3-command-not-found

	sudo apt-get update
	sudo apt-get upgrade

	sudo apt-get install -y git vim mc
	sudo apt-get install -y python3
	<!DOCTYPE html>
	<head>
	<script>
	var db;
	// until we won't need this prefix mess
	var indexedDB = window.indexedDB \|\| window.webkitIndexedDB
	\|\| window.mozIndexedDB \|\| window.msIndexedDB;
	var IDBTransaction = window.IDBTransaction \|\|
	window.webkitIDBTransaction;