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today's howtos

Submitted by Roy Schestowitz on Tuesday 8th of June 2021 03:31:18 PM Filed under
HowTos
  • Informative guide to useful Linux Keyboard shortcuts

    Using Linux means using command line interface aka CLI aka terminal on regular basis. Being good at using CLI is what separates a casual Linux user & an expert.

    In this tutorial, we will learn about some useful Linux keyboard shortcuts that can increase your efficiency as well as your productivity.

  • How FreeDOS boots | Opensource.com

    When you turn on the power to your computer, the system performs several self-checks, such as verifying the memory and other components. This is called the Power On Self Test or "POST." After the POST, the computer uses a hard-coded instruction that tells it where to find its instructions to load the operating system. This is the "boot loader," and usually it will try to locate a Master Boot Record or (MBR) on the hard drive. The MBR then loads the primary operating system; in this case, that's FreeDOS.

    This process of locating one piece of information so the computer can load the next part of the operating system is called "bootstrapping," from the old expression of "picking yourself up by your bootstraps." It is from this usage that we adopted the term "boot" to mean starting up your computer.

  • Tune your MySQL queries like a pro | Opensource.com

    Many people consider tuning database queries to be some mysterious "dark art" out of a Harry Potter novel; with the wrong incantation, your data turns from a valuable resource into a pile of mush.

    In reality, tuning queries for a relational database system is simple engineering and follows easy-to-understand rules or heuristics. The query optimizer translates the query you send to a MySQL instance, and then it determines the best way to get the requested data using those heuristics combined with what it knows about your data. Reread the last part of that: "what it knows about your data." The less the query optimizer has to guess about where your data is located, the better it can create a plan to deliver your data.

    To give the optimizer better insight about the data, you can use indexes and histograms. Used properly, they can greatly increase the speed of a database query. If you follow the recipe, you will get something you will like. But if you add your own ingredients to that recipe, you may not get what you want.

  • Find The List Of Installed Repositories From Commandline In Linux

    This brief tutorial explains how to find the list of installed repositories in Linux from command line. Listing the installed repositories from CLI mode is not only easier, but also faster compared to GUI mode. Here, I have given methods to list installed repositories in various Linux distributions.

  • How to Install and Setup Apache Spark on Ubuntu 21.04 - Unixcop

    Apache Spark is an open-sourcedistributed computational framework that is_created to provide faster computational results.

    It is an in-memory computational engine, meaning the data will be processed in memory.

    Spark supports various APIs for streaming, graph processing, SQL, MLLib. It also supports Java, Python, Scala, and R as the preferred languages. Spark mostly installed in Hadoop clusters but you can also install and configure spark in standalone mode.

    In this article, we will be seeing how to install Apache Spark in Debian and Ubuntu-based distributions.

»

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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.

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