Christian Bacon nsxsoft

Fast variable exchange between CODESYS and PYTHON via shared memory

A video of this working example is on YouTube and full PYTHON source code and CODESYS project is on GitHub.

Setup on CODESYS side

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

Large Scale Vue Application Structure

Application Structure LIFT Principle

Locating our code is easy
Identify code at a glance
Flat structure as long as we can
Try to stay DRY (Don’t Repeat Yourself) or T-DRY

"Folders-by-Feature" Structure

Security Advisories / Bulletins linked to Log4Shell (CVE-2021-44228)

Errors, typos, something to say ?

If you want to add a link, comment or send it to me
Feel free to report any mistake directly below in the comment or in DM on Twitter @SwitHak

Other great ressources

Royce Williams list is different, listed by vendors responses:
https://www.techsolvency.com/story-so-far/cve-2021-44228-log4j-log4shell/
TBD

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:


	# Unload the Service Service
	sudo launchctl unload -w /Applications/Server.app/Contents/ServerRoot/System/Library/LaunchDaemons/com.apple.serviceproxy.plist

	# Load the Service Service
	sudo launchctl load -w /Applications/Server.app/Contents/ServerRoot/System/Library/LaunchDaemons/com.apple.serviceproxy.plist

	# Check the status of the Server Service
	sudo launchctl list com.apple.serviceproxy

	import io
	import pathlib

	import pycdlib

	ubuntu = pathlib.Path('ubuntu-22.04-live-server-amd64.iso')
	new_iso_path = pathlib.Path('ubuntu-22.04-live-server-amd64-auto.iso')

	iso = pycdlib.PyCdlib()
	iso.open(ubuntu)

	## Install necessary packages and latest virtualbox
	wget -q -O - http://download.virtualbox.org/virtualbox/debian/oracle_vbox_2016.asc \| sudo apt-key add -
	sudo sh -c 'echo "deb [arch=amd64] http://download.virtualbox.org/virtualbox/debian bionic non-free contrib" >> /etc/apt/sources.list.d/virtualbox.org.list'
	sudo apt update
	sudo apt install virtualbox-5.2 qemu-utils genisoimage cloud-utils

	## get kvm unloaded so virtualbox can load
	## WARNING: not needed?
	#sudo modprobe -r kvm_amd kvm_intel
	#sudo service virtualbox stop

	#!/bin/bash

	set -e
	# REQUIRED ACTION: Configure your backup server vars - see OVH Server Manager's "Backups" tab.
	# BACKUP_HOST_PREFIX: use the prefix domain for the listed "Name" value on the "Backups" tab.
	# Example: With a 'Name' value `ftpback-bhs1-3.ip-111-222-333.net` you would need to set `BACKUP_HOST_PREFIX=ftpback-bhs1-3`

	# Add something likethese to your ~/.bashrc - /etc/profile
	#export OVH_SERVER_ID="ns5xxxxx.ip-x-x-x.net"
	#export BACKUP_HOST_PREFIX="ftpback-bhs1-x"

	server {
	listen 80;
	listen [::]:80;
	root /var/www/wordpress; # Wordpress Directory
	index index.php index.html index.htm;
	server_name localhost;

	client_max_body_size 100M;
	autoindex off;