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today's howtos

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HowTos
  • [Solved] Target Packages is configured multiple times Error in Ubuntu

    Recently, when I was updating Ubuntu via command line, I encountered a warning that complained about target package being configured multiple times.

  • Using the timedatectl command to control your Linux time and time zone | Network World

    The timedatectl command allows you to both query and change the system clock and its settings on Linux systems.

    To display the current settings, use the command by itself—with no arguments.

  • Virtualization: A Comprehensive Guide for Beginners

    Virtualization in today's time plays a critical role. From consumer level desktop usage to enterprise level cloud services, there are a variety of applicabilities.

    This guide will help you to get started with virtualization in a comprehensive manner. This will give you enough fundamental knowledge to you as a student, engineer or even as a CTO to understand different types of virtualization and how it is used in the industry today.

  • Localtunnel - Expose your Localhost to the Internet

    Want to Expose your localhost on the Internet? Often, clients ask for an update, or your friends want to know the site you were working on. We can solve all these problems using Localtunnel.

    Localtunnel exposes your localhost to the Internet without foul play on DNS or deploying on another commit. Apache, Nginx, and Node Js application can be easily accessed by your friends or client for updates.

  • Manage your APC battery backup system with this Linux command | Opensource.com

    Back in the early days of personal computers, I wrote the IBM training course for the original IBM PC. To complete the course in time for the IBM, ComputerLand, and Sears training, IBM gave me a PC to take home so I could work over evenings and weekends—arguably the first instance of anyone having an IBM PC in their home.

    I did this work in Boca Raton, Florida, where the small, local power company was commonly known as "Florida Flicker and Flash," with good reason. The short but frequent power outages caused me to lose my work more than once. Unfortunately, there were no Uninterruptible Power Supply (UPS) systems to keep my PC up and running through these annoying and sometimes destructive incidents.

    A UPS keeps a computer running long enough to last through minor power events, such as outages and surges of a few seconds up to as much as 20 or 30 minutes. In the case of these longer outages, the function of the modern UPS is to notify the computer to power down before the UPS runs out of battery power. Otherwise, the sudden loss of power can lead to loss of data.

    The computer and UPS communicate through a serial or USB cable. A system service manages the communications and sends appropriate commands to both the UPS and the computer. Windows computers generally use a free version of the software provided by the UPS vendor. However, the apcupsd utility supports Linux, Windows, BSD, Solaris, and macOS, providing consistency across operating systems.

    This set of tools supports APC UPS systems and provides varying degrees of support for UPS systems produced by Tripp-Lite, CyberPower, and others. I currently have UPS systems from all three of these manufacturers running on networks for which I have responsibility. I have not found a list of supported UPS systems. Nor is the apcupsd documentation helpful on this, and I have seen nothing definitive in any web searches.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.