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How to Set Primary SMTP in Exchange Online – M365

May 19, 2022 Zsolt Agoston
Use the Set-Mailbox cmdlet with the -WindowsEmailAddress parameter to set the primary SMTP address in Exchange Online ... Read More

Display Contents of SSL Certificate from PEM File

May 16, 2022
A one-liner to display all contents of a SSL public key file ... Read More

Convert OPENSSH key to RSA type

May 13, 2022
Use ssh-keygen to convert an OPENSSH key to RSA format ... Read More

Vim – Change Color Scheme for Easy Readability

April 22, 2022
Set the 'desert' color scheme for Vim. easier on the eyes on dark backgrounds ... Read More

SSH Private key Authentication to Linux on a Windows Machine

April 20, 2022
Learn how to use private certificate files to automatically authenticate to SSH servers. No password needed! ... Read More

How to Configure Static IP on Debian 10

April 15, 2022
Configure a static IP address on a Debian 10 server using the command line ... Read More

MySQL Query All Users and User Premissions

April 10, 2022
List all the users and user permissions in a MySQL database using the shell ... Read More

How to Securely Wipe a Disk in Windows 10 – No Extra Software Needed!

April 7, 2022
I show you an easy way of wiping a disk using only built-in tools on a Windows computer ... Read More

How to Compact a VHD or VHDX File using PowerShell

April 1, 2022
These three simple commands will compact your vhd or vhdx file, removing the whitespace inside ... Read More

How to Add a Thin-Provisioned Disk in Proxmox

March 29, 2022
Learn how to convert a qcow2 disk file to thin-provisioned type ... Read More

Proxmox Update Unauthorized Issue Fix

March 27, 2022
A quick tip on how to fix the Failed to fetch, unathorized error in Proxmox when trying to update the system ... Read More

How to Add Extra Storage to Proxmox

March 23, 2022
Step by step guide shows how to add new storage disks to an existing Proxmox installation ... Read More

Exercise: Set up 10 new VLANs on the pfSense LAN interface

March 15, 2022
Today's task is to set up ten new VLANs on a virtual pfSense router with separate, routable subnets. DHCP should service each subnets and both virtual achines and physical nodes should be able to use them. Let's see how to ... Read More

How to set localhost IPv4 instead of IPv6

March 13, 2022
Learn how to make the IPv4 address the preferred address on your Windows hosts ... Read More

How to Set Up VLANs on Proxmox

March 10, 2022
This is the second part of our series about how to set up a home IT lab. The first part was about configuring a Proxmox hypervisor on an old machine. This part shows you how to set up VLANs for ... Read More

How to Remove Proxmox License Warning

March 7, 2022
This guide shows you how to remove the pesky 'No valid subscription' warning from your Proxmox portal ... Read More

How to Build a Home IT Lab with Proxmox

March 3, 2022
This article shows how to build a complete IT lab with multiple subnets using a single computer, and a switch ... Read More

How to Build a Home IT Lab with Hyper-V

March 1, 2022
Learn how to build a full IT lab on your Windows home computer with subnets and proper routing ... Read More

PowerShell: How to parse a large one-line XML

March 1, 2022
Parse unformatted (one-liner) xml files, adding line breaks and indentation using Linux ... Read More

PowerShell: How to Reverse an Array

February 22, 2022
Learn how to reverse an array of any kind in PowerShell ... Read More

How Does UTF-8 Encoding Work

December 29, 2021
Learn what the UTF-8, UTF-16 and UTF-32 encodings are, how they work, what is BOM and how variable length encoding is utilized to represent over a 100 thousand characters in a simple text file ... Read More
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