System & Network Admin

Aiming for a 10 year life-cycle for smartphones

Explore the history of RADIUS, its role in PPP, its integration with 802.1X for wireless LANs, and the use of EAP in enhancing network security.

How I've automated updating the bot list to block access to my site

Since Docker containers are little boxes of software, it can be easily copied and moved from computer to computer. Here we show you how to do it.

Here’s the latest installment in the series on working with LLMS: It was only after I deployed the function and used it in three different dashboards that the penny finally dropped. This had …

Introduction to TextFSM In this blog post, we will look at TextFSM, a tool that helps parse the raw data (semi-structured) we often get from network devices. If you've ever tried to use TextFSM documentation, you might know it can be a bit confusing. Therefore in this post, we'll go

In this article, I’ll guide you through the process of using ddrescue to recover data from a failing hard disk in simple, easy-to-follow steps.

Let's explore how to create a one-liner for fuzzy matching when navigating git worktrees.

TL;DR: I convert it from video to gif to video

The sudo command in Linux stands for “superuser do“, which allows a permitted user to execute a command as the superuser or another user.

A very common use case for a developer is to deal with multiple github accounts and hence multiple ssh keys. and this gets pretty painful quickly. I’ll show you how I manage multiple GitHub accounts easily by setting up different SSH keys and git configs for each project folder. This guide will help you avoid SSH key problems and make workflow for personal, work, and client projects much simpler.

A look at CIDR block ownership from a RIR-, country-, and organization level. Originally presented at RIPE88.

Quality of Service (QoS) in computer networks provides network engineers with the means to prioritize latency-sensitive traffic flows. It is increasingly essential as bandwidth consumption soars. Learn more about it here.

There's a lot more to printing from the Linux command line than the lp command. Check out some of the many available options.

I have just install Postgres 9.3 on Windows 7. The installation completed successfully. It has never asked me to provide the password for postgres user. The service postgresql-x64-9.3 is up and ru...

In this comprehensive step-by-step tutorial, we will guide you through the process of installing PostgreSQL on a Debian 12 system.

If you need to extract the audio from an .WEBM movie file to an .MP3 audio file you can  execute the following: The first command will assign the file name to a variable, we do this to avoid typing…

YouTube-PlaylistPro: Calculate Total Playlist Duration, Sort Videos by Duration/Views/Title/Index, and Track Watching Progress.

Introduction to just

System administrators are responsible for service management on Linux devices. Here is what they need to know about configuration, startup options, security and more.

Describes how to use the mv command to move directory (folders) in Linux using the terminal application.

This article explains how to edit PDF metadata tags on Linux, using either a GUI or from the command line.

Tool to encrypt / convert with base 58 composed of alphanumeric characters except 0,O,I,l to avoid reading errors.

One of the most underappreciated APIs in AWS is the Cost Explorer API - specifically the GetCostAndUsage API. In essence, this API lets you fetch the same information you can get through the Cost Explorer GUI - but without the difficult UI/UX. This short blog post shows how you can leverage this programmatic access to the Cost Explorer to quickly build up powerful visualizations of your AWS costs directly from the CLI - and all you need is ce:GetCostAndUsage permissions.

In this article, we will discuss how to bridge two interfaces using Netplan, explaining both DHCP and static IP configurations.

win-acme is a ACMEv2 client for Windows that aims to be very simple to start with, but powerful enough to grow into almost every scenario.

Learn how to manage CA certificates on Linux by adding, removing, and updating them.

Learn the basics about commonly used, configurable DHCP options for IPv4 and IPv6 networks in this handy guide by Incognito Software Systems.

Let's look at this 1990s Sun workstation and how to repair it!