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If you've ever written code, whether it's a shell script, a Python script, C++, or even Scratch, then you know that variables are vital. Computers and coders use variables as waystations, where they surreptitiously pass information back and forth. For instance, if you need to process a user's name in a shell script, you might set up a variable, put the username into the variable, and then instruct the computer to do something to the variable (check it against a list of authorized users, for example). read more

This article explains the installation of the Opera browser on Debian Linux. We will describe both the command line and the GUI ways of installing the Opera browser in your system.

If you run a server with a public-facing SST access, you might have experienced malicious login attempts. This article shows how to use two utilities to keep the intruder out of our systems. To protect against repeated ssh login attempts, we’ll look at fail2ban. And if you don’t travel much, and perhaps stay in one […]

If you’re looking for software that acts as a central hub for internet content, you should try Fraidycat. It isn’t a feed reader. And while it does gather news headlines from websites, it has much wider coverage letting you follow interesting people via YouTube, Twitch, Twitter, Instagram, SoundCloud streams, and more.

The hostname is set during the installation of the operating system or dynamically assigned to the virtual machine when it is created. This guide explains how to set or change the hostname on Ubuntu 20.04 without needing to restart the system.

Streamhut is a web service that allows you to instantly share your Terminal to web in real time with anyone, without installing anything in Linux.

Curiosity may have killed the cat, but it helps the sysadmin grow and thrive.

Wally’s “DR8074A” and Compex’s “HK01” are similar implementations of a Linux-driven Qualcomm reference design for its quad-core -A53, 802.11-ax enabled IPQ8074 router SoC. The SBCs feature 5x GbE and single 10GbE and SFP+ ports. Wally’s has posted specs for a DR8074A (HK01) router board based on a Qualcomm reference design for its IPQ8074 SoC. Earlier […]

Firefox was my window into Mozilla 15 years ago, and it’s through this window I saw the power of an open and collaborative community driving lasting change. My admiration and …

JSON is a human-readable text-based data format. It is language independent and used for data interchange between applications. In this article, we’ll explain how to parse JSON data in Python.

Five years since the last update, the team celebrates 50 years of the language with more architectures. Great news, Pascal fans. After a lengthy hiatus, the cross-platform Free Pascal has emerged with an array of new features and new targets.…

Nexcom’s “AIEdge-X 300” runs Linux or Win 10 on an 8th/9th Gen Coffee Lake CPU and offers 2x SATA, 3x HDMI 2.0, 2x M.2, and a PCIe x16 slot with an optional Nvidia RTX 2060 card. Nexcom has announced an AI edge computer that offers a doublewide PCIe x16 slot for up to 160W graphics […]

Productivity is a subjective term, but essentially, it's a measurement of how efficiently a particular task is completed. Everyone has different things that keep them productive—some people need help staying on task, some people need a particular kind of work environment, some people need alerts and reminders to avoid missed deadlines, and some need assistance with repetitive, manual chores. read more

Visual Studio Code, also known as VS Code, is a code editor for Linux, Windows, and macOS. It's the kind of editor that walks the line between editing text and managing your entire codebase, like an integrated development environment (IDE). It's extensible through plugins and has proven to be a reliable text editor that's easily beaten out formidable non-open rival editors. read more

Netbox is a free and powerful IP address (IPAM) and datacentre infrastructure management (DCIM) tool. It is used for storing information about your networks, VMs, and inventories. In this tutorial, we will explain how to install Netbox with Nginx as a reverse proxy on Ubuntu 20.04.

Believe it or not, the Linux kernel 5.6 is now EOL (End-of-Life) and it will no longer receive updates or security fixes. Everyone is urged to update to the latest Linux 5.7 kernel series as soon as possible.

In SSH tunneling, an encrypted channel is created between an ssh client and an ssh server. Information flowing within the encrypted tunnel is secure and thus cannot be intercepted. This type of service is in particular used when running insecure protocols such as TightVNC. They can also be used to access internal networks and services running on them, bypass firewalls, as VPNs and as backdoors.

Software Wars is a 70 minute documentary about the ongoing battle between proprietary versus free and open-source software. The more we share scientific information, the faster we can solve the challenges of the future.

Some time ago, I learned an important Kubernetes lesson the hard way. The story begins with Kubernetes Operators, which is a method of packaging, deploying, and managing a Kubernetes application. The thing I tripped up on was garbage collection in the cluster, which cleans up objects that no longer have an owner object (but more on that later).

Have you ever wanted a temporary working space with read/write access? Good! This guide explains how to to mount a temporary partition in RAM in Linux.