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today's howtos

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HowTos
  • Rajeesh K Nambiar: Letsencrypt certificate renewal: Nginx with reverse-proxy

    Let’s Encrypt revolutionized the SSL certificate management for websites in a short span of time — it directly improved the security of users of the world wide web by: (1) making it very simple to deploy SSL certificates to websites by administrators and (2) make the certificates available free of cost. To appreciate their efforts, compare to what hoops one had to jump through to obtain a certificate from a certificate authority (CA) and how much money and energy one would have to spend on it.

    I make use of letsencrypt in all the servers I manitain(ed) and in the past used the certbot tool to obtain & renew certificates. Recent versions of certbot are only available as a snap package, which is not something I’d want to or able to setup in many cases.

  • How To Disable SELinux on AlmaLinux 8 - idroot

    In this tutorial, we will show you how to disable SELinux on AlmaLinux 8. For those of you who didn’t know, SELinux (Security-Enhanced Linux) is a Linux kernel module that provides a mechanism to enforce access control security policies including MAC (Mandatory Access Control). SELinux policy rules specify how processes and users interact with each other as well as how processes and users interact with files. When there is no rule explicitly allowing access to an object, such as for a process opening a file, access is denied.

    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 through the step-by-step disabling SELinux on an AlmaLinux 8.

  • Reset Gnome Desktop Settings To Default In Linux - OSTechNix

    Have you done too many customizations and turned your Gnome Linux desktop ugly or broke something? No worries! You can always reset Gnome desktop settings to default in Linux as described here.

    I have a habit of changing the look and appearance of stock GNOME desktop environment. I often install many themes, change the icon theme, cursor theme, colors, and move the topbar to different position etc. After completing the customization, I mostly end up with either an ugly desktop or broken desktop. If you're anything like me, don't panic! Resetting GNOME Linux desktop to its factory settings is easy!

  • How to Install The Latest PipeWire via PPA in Ubuntu 20.04, 21.04 | UbuntuHandbook

    This simple tutorial shows how to install the latest PipeWire server via an Ubuntu PPA in Ubuntu 20.04, Ubuntu 21.04, and Ubuntu 20.10.

    PipeWire is a new low-level multimedia framework, aims to offer capture and playback for both audio and video with minimal latency and support for PulseAudio, JACK, ALSA and GStreamer based applications. And it also work with sandboxed Flatpak applications.

    PipeWire is available in Ubuntu universe repositories, and it’s officially supported in Ubuntu 21.04. While the default version is always old, a fan of Arch user maintains an Ubuntu PPA with the latest packages so far for Ubuntu 20.04, Ubuntu 20.10, Ubuntu 21.04, and next Ubuntu 21.10.

  • How to Find Duplicate Data in a Linux Text File With uniq

    Have you ever come across text files with repeated lines and duplicate words? Maybe you regularly work with command output and want to filter those for distinct strings. When it comes to text files and the removal of redundant data in Linux, the uniq command is your best bet.

    In this article, we will discuss the uniq command in-depth, along with a detailed guide on how to use the command to remove duplicate lines from a text file.

  • 7 ways to check network speed in Linux with browser & cli

    Now one of the things that every modern person wants to know about his internet connection is the network speed. Most people don’t even know if 60 Megabits is a good or bad speed but they know more is better. So in order to understand network speed we have to understand what is good and bad speed? But how to do this in a really short and not boring way? The easy way is to trust us and take our word that speeds grater than 75 Megabits per second are great for home and watching 4k online TV and so on.

    For the more curious readers there is an article on Wikipedia explaining network speeds which you can read from here.

    Now your network speed is divided in two parts, the first part is the external network speed ( the speed after your home router ) and internal speed ( the speed that your home network runs at ). In this article we are interested in our speed after the router ( The speed that the network provider is selling us ) so that we can check if we are getting what they are selling to us. For this to be accurate we have to accept that the internal network speed ( our home LAN ) is capable of reaching the provided by the provider speeds ( for example if we have a 200 Megabit provided to our router, the router has to be capable to operate at gigabit speeds ).

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.