Language Selection

English French German Italian Portuguese Spanish

today's howtos

Filed under
HowTos
  • How to Add Host in Zabbix Server to Monitor

    Zabbix is an open-source monitoring software tool for diverse IT components, including networks, servers, virtual machines and cloud services. Zabbix server is rich in template tools which contain lots of predefined templates which we can easily be used with your hosts.

  • How to install Flightgear on Elementary OS 6.0 - Invidious

    In this video, we are looking at how to install Flightgear on Elementary OS 6.0.

  • How to install and configure Squid Proxy on Rocky Linux/Alma Linux 8

    In this guide we will learn how to install and configure Squid Proxy server on a Rocky Linux 8 server. This guide also works on other RHEL 8 based distros like Alma Linux and Oracle Linux.

    Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on most available operating systems.

  • How to install Flashforge FlashPrint 5.2.1 on a Chromebook

    Today we are looking at how to install Flashforge FlashPrint 5.2.1 on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.

    This tutorial will only work on Chromebooks with an Intel or AMD CPU (with Linux Apps Support) and not those with an ARM64 architecture CPU.

  • Install PHP 8.1 on Linux Mint 20 - LinuxCapable

    PHP 8.1 is a significant update of the PHP language that was “officially” released on November 25, 2021. As we advance from the existing PHP 8.0 release, this is a standard upgrade. The new PHP 8.1 brings enums, fibers, never return type, final class constants, intersection types, read-only properties amongst the long list of new features and changes.

    Linux Mint is known to be a desktop distribution and not as a full-fledged web server. However, developers may require to install PHP on their Mint system for development purposes. In the following tutorial, you will learn how to import the Ondřej Surý PPA and install PHP 8.1 on your Linux Mint 20.

  • How to install and use Firewalld on Rocky Linux 8 - Linux Shout

    Firewalls are one of the most essential parts of security when we are going online. Here we learn the steps and command to install, configure, and how to use FirewallD on Rocky Linux 8 using CLI or GUI.

    Many of us who are not already Linux would already be familiar with the firewall feature on Windows, where it is very easy to turn On or Off ports or services using GUI. However, what about Linux such as CentOS, Rocky Linux, RedHat, AlmaLinux, and more… If you are using full Linux Desktop then a firewall would already be there but in most of the cases without a graphical interface. Nevertheless, Debian, RedHat, Ubuntu, and other Linux systems provide the appropriate firewall GUI software directly from their respective repository to manage things with the help of mouse clicks.

    But what if you just want a basic OS installation with no graphical interface? Because minimal versions of Linux would not even have the CLI version of Firewall by default. Well, this is a very small problem, if you have an active internet connection and due to an in-built package manager under Linux, we can install a firewall with just a single command.

  • Overview of the Wireshark User Interface (GUI)

    Wireshark is a Free and Open Source Software (FOSS) and it is developed by a community of enthusiastic developers. Wireshark (formerly Ethereal) is used for capturing and investigating the traffic going on a network. It is a very popular network protocol analyzer among network professionals, security analysts, and research scholars around the world. The good thing is that it is open source and freely available under the GNU General Public License version 2. It is available for major OSes like Windows, macOS, Linux, and UNIX.

    Wireshark has many features like profound inspection of network traffic, real-time capture, offline analysis, R/W support for different capture file types etc. It also organizes SharkFest, an annual educational conference, around the world for imparting knowledge of their product. These conferences are focused on the best practices of using Wireshark.

  • How to install DragonFly BSD 6.2.1 plus MATE desktop and some applications. - Invidious

    In this video, I am going to show how to Install DragonFly BSD 6.2.1 plus MATE and some applications.

  • Using the Linux look command to select lines from files | Network World

    The look command on Linux can be handy for selecting particular lines from text files with sorted contents. Let's look into how it can be used and where you might run into some problems.

  • How to Change Domain Name on WordPress

    This tutorial explains how to change the domain name on WordPress.
    By reading this article you will learn how to edit your WordPress site URL both from the WordPress dashboard and from your server through phpMyAdmin.

    In case you do not have access to your dashboard through your new URL, you can achieve it from your server. This method includes the use of a plugin to update all the URLs in your site content.

    All steps explained in this article include screenshots making it easy to follow them.

  • Expanding Your Nextcloud Instance Using Linode's NVMe-Backed Block Storage

    Nextcloud is a very popular self-hosted alternative to Dropbox, Google Drive, and other cloud hosting providers. It's not only the go-to choice for individuals, either. Nextcloud has a number of enterprise-level deployments.

    Given the above, we decided to install Nextcloud on a Linode Dedicated CPU and see just what it would take to configure it to use Linode's new NVMe-backed block storage. This article was the result.

  • Analyze Network Traffic Using Brim Security - kifarunix.com

    In this tutorial, you will learn how you can analyze network traffic using Brim security tool. Brim is an open source desktop application that can be used to analyze structured network traffic data like;

More in Tux Machines

Arduino Projects: Sun and Power Trackers

  • This sun tracker uses an Arduino to increase solar panel efficiency | Arduino Blog

    With the rapid pace of solar panel installations over the course of the previous decade, there has been an ongoing challenge of trying to improve their efficiency. Apart from the typical silicon crystal photovoltaic cells, there are also more efficient/expensive cells known as concentration photovoltaics (CPV), which rely on a set of mirrors to focus sunlight into a small multijunction cell. Although this technology reduces the size and material requirements, it also requires precise sun tracking for peak performance. Ruediger Loechenhoff has been able to create a far cheaper solar tracker controller, which relies on an Arduino Uno to drive a set of two motors that position the panel. To achieve this, the Uno was connected to a 9-axis MPU-9250 compass module for internal positioning, a DS3231 real-time clock for accurate timing, and a DIY shading beam sunlight sensor to detect optimal angles. Operating the tracker is also quite simple since the firmware only requires an occasional calibration step after a set number of days.

  • This Arduino device can anticipate power outages with tinyML | Arduino Blog

    Our reliance on electronic devices and appliances has never been higher, so when the power goes out, it can quickly become an unpleasant and inconvenient situation, especially for those who are unable to prepare in time. To help combat this problem, Roni Bandini has devised a device he calls “EdenOff,” which is placed inside an electrical outlet and utilizes machine learning at the edge to intelligently predict when an outage might occur. Developed with the use of Edge Impulse, Bandini began by creating a realistic dataset that consisted of three columns that pertain to different aspects of an outlet: its voltage, the ambient temperature, and how long the service has been working correctly. After training a model based on one dataset for regular service and the other for a failure, his model achieved an excellent F-1 score of .96, indicating that the model can forecast when an outage might take place with a high degree of accuracy.

LibreOffice and More

  • LibreOffice at the Univention Summit 2022

    After two years of pandemic restrictions, more and more in-person events are now taking place. Members of the LibreOffice community attended the recent Univention Summit 2022 in Bremen, northern Germany. They had a stand with LibreOffice merchandise, talked to visitors and answered questions.

  • May 2022, Month of LibreOffice Awards

    In May 2022, LibreOffice has received two Awards: SourceForge’s Open Source Project of the Month, and Software Informer’s Editor’s Pick.

  • Do While – Loop Example in Python | Mark Ai Code

    Loops are an important and widely utilized element in all current programming languages. A loop is the finest solution for automating a certain repeated operation or preventing yourself from writing repetitive code in your projects. Loops are sequences of instructions that are executed repeatedly until a condition is fulfilled. Let’s take a closer look at how Python loops function.

Proprietary Software and Microsoft Proxies

  • Patch now: Zoom chat messages can infect PCs, Macs, phones with malware

    Zoom has fixed a security flaw in its video-conferencing software that a miscreant could exploit with chat messages to potentially execute malicious code on a victim's device. The bug, tracked as CVE-2022-22787, received a CVSS severity score of 5.9 out of 10, making it a medium-severity vulnerability. It affects Zoom Client for Meetings running on Android, iOS, Linux, macOS and Windows systems before version 5.10.0, and users should download the latest version of the software to protect against this arbitrary remote-code-execution vulnerability. The upshot is that someone who can send you chat messages could cause your vulnerable Zoom client app to install malicious code, such as malware and spyware, from an arbitrary server. Exploiting this is a bit involved, so crooks may not jump on it, but you should still update your app.

  • SAP attracts further criticism for Russia presence, despite promise to leave

    A Ukrainian minister has accused software giant SAP of continuing to operate in Russia despite the German vendor previously vowing to withdraw from the aggressor nation. In the months following Russia's invasion of Ukraine, SAP attracted criticism as it continued to support installations of its software in Russia and cloud services used by Russian businesses, including state-owned bank Sberbank.

  • OpenLogic by Perforce: Why we support OSI [Ed: OSI boasts about being controlled by Microsofters]
  • OpenLogic by Perforce Announces Sponsorship of Rocky Enterprise Software Foundation [Ed: Microsoft proxy lays its hands on Rocky after it ran away from Microsoft]

Videos: Steam Deck, LinuxFX, Brave Beta on Debian 11, and Destination Linux 279