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HowTos

today's howtos

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  • How to Install and Use Flatpak on Linux

    In this guide, we focus on how you can install Flatpak and use it across various Linux distributions.

  • How to create a Linux RPM package | Enable Sysadmin

    You've written a great script that you want to distribute, so why not package it as an RPM?

  • How to Install PHP 8 on Ubuntu - Cloudbooklet

    Install PHP 8 on Ubuntu. This guide let you learn how install the latest PHP version 8 and upgrade to latest on your Ubuntu 20.04 or 18.04 systems or your Ubuntu server on any VPS or any Cloud or any Dedicated hosting and configure it with Apache and Nginx.

    The latest PHP 8 is officially released on November 26th, 2020. It comes with a number of new features and a few incompatibilities that you should be aware of before upgrading from the previous version.

    This installation is tested on Google Cloud Platform with a Compute Compute Engine VM Instance. This set up will work on all Linux servers.

  • Full Circle Magazine #163
  • How To Setup Firewall using FirewallD on CentOS 8 - idroot

    In this tutorial, we will show you how to setup a Firewall using FirewallD on CentOS 8. For those of you who didn’t know, FirewallD is an alternative to the iptables service, for dynamically managing a system’s firewall with support for network (or firewall) zones and provides a D-Bus interface for managing configurations. Starting with CentOS 7, FirewallD replaces iptables as the default firewall management tool.

    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 Setup Firewall using FirewallD on CentOS 8.

  • How to install PHP 8 on Ubuntu 20.04 / Debian 10 - LinuxH2O

    In this article, you will learn how to install the latest PHP version 8 on Ubuntu 20.04 LTS, Debian 10, and their derivative distributions.

    PHP is one of the most popular server-side scripting languages. Most of the websites on the internet are using PHP including Facebook, Yahoo, Wikipedia. There are many frameworks that are also built with PHP, like WordPress, Codeigniter, Laravel, etc.

    This article will guide on how to install the latest stable release of PHP 8.0 on Ubuntu, Debian, and their derivatives like Mint, MX Linux, Elementary OS, POP OS, Zorin OS, etc.

  • [Old] How to install XRDP (Remote Desktop) Server on Centos 8

    XRDP is an open-source implementation of the Microsoft Remote Desktop (RDP) that allows you to graphically control your system. With RDP, you can log in to the remote machine the same as you had logged into the local machine. It uses Port 3389 for its connection. In this tutorial, we will look at how to set up the Remote desktop Connection on Centos 8.

today's howtos

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  • How to install Mageia Linux

    Mageia is an RPM-based Linux operating system forked from the famous French Linux distribution Mandriva. It is an open-source operating system and is an excellent option for using Linux the RPM way. In this guide, we’ll show you how to install the operating system on your computer.

  • How to free up RAM on Linux

    Are you running out of usable memory on your Linux PC? Are you trying to free up RAM space but don’t know how to do it? We can help! Follow along as we go over how to free up RAM on Linux!

  • [Older] How to monitor network activity on a Linux system - LinuxConfig.org

    In this article we learn how to monitor network activity on Linux.

  • How to Disable Your Webcam in Ubuntu?

    Find out these simple methods to disable webcam in Ubuntu. We can stop the webcam driver to load in Linux OS by modifying the configuration file.

  • How to install Code Blocks on Ubuntu 20.04 - YouTube

    In this video, we are looking at how to install Code Blocks on Ubuntu 20.04. Enjoy! For the command and more, look here: https://www.linuxmadesimple.info/2020/11/how-to-install-code-blocks-on-ubuntu.html

today's howtos

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  • Add, Delete And Grant Sudo Privileges To Users In CentOS - OSTechNix

    A "sudo" user can run an administrative task or command which a normal user is not allowed to. This guide explains how to add, delete and grant sudo privileges to users in CentOS and other RHEL-based systems. The steps given below are tested in CentOS 8 minimal edition, however it should work on other RPM-based systems as well.

  • How To Install Moodle on CentOS 8 - idroot

    In this tutorial, we will show you how to install Moodle on CentOS 8. For those of you who didn’t know, Moodle is an Open Source Course Management System (CMS), also known as a Learning Management System (LMS) or a Virtual Learning Environment (VLE). It has become very popular among educators around the world as a tool for creating online dynamic web sites for their students. Moodle brings features to include assignment submission, online quizzes, wiki, grading, instant messages, discussion boards, and others. But since it’s modular software, it can be extended via plugins to add extra functionality.

    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 installation of Moodle course management system (CMS) on CentOS 8.

  • Solve error: cannot communicate with server dial unix /run/snapd.socket - Linux Shout

    Then this is because, after installation, the Daemon of SNAP is have not started yet and needs to start and enable manually by the user.

  • Running Multiple MariaDB Instances on Ubuntu 20.04 LTS – Linux Hint

    At times you may need to run multiple instances of the MariaDB database server software on the same computer/server. MariaDB has an official tool mysqld_multi to run multiple instances of the MariaDB database server software on the same computer/server.

    In this article, I am going to show you how to run multiple MariaDB database server instances on the same computer/server running the Ubuntu 20.04 LTS operating system. So, let’s get started.

  • Simple guide to install MongoDB on Ubuntu - LinuxTechLab

    MongoDB is an open-source general-purpose, document-based NoSQL database server which uses JSON documents. It is created keeping the current requirements of the cloud era & application developers in mind. It boasts many features, some of which are,

    Schemaless
    Provides replication
    Easy to scale-out
    index on any attribute
    auto-sharding
    Deep/rich query abilities, etc

  • The Calamares Series – everything you need to know about Calamares

    Like always some of the videos contain more information than the title suggests

  • Everything you need to know about pacman
  • Orchestrate event-driven, distributed services with Serverless Workflow and Kubernetes - Red Hat Developer

    Serverless workflows have gained renewed interest and usefulness with the rise of serverless architectures. Once seen as centralized and monolithic, they now play a key role in cloud-based event and service orchestration. Until recently, there was no vendor-neutral way to describe service orchestration, so developers were dependent on vendors and vendor implementations. We realized that we needed a common, standards-based language for describing serverless workflows.

    In this article, we introduce the Serverless Workflow specification, now in its 0.5 version release. Our goal with this project is to empower anyone to develop serverless workflow libraries, tooling, and infrastructure for modeling workflows across different cloud platforms.

today's howtos

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  • How to Install ElkArte Forum with Apache and Let's Encrypt SSL on CentOS 8

    ElkArte is a free and open-source forum software based on Simple Machine Forum. In this tutorial, we will show you howto install ElkArte with Let's Encrypt SSL on CentOS 8.

  • How to Fix 'Repository does not have a release file' Error in Ubuntu

    When installing software on Ubuntu, sometimes you may be required to add third-party PPAs. Adding PPAs enables you to access software packages that have not been included in official Ubuntu repositories. Sometimes, when updating your system or installing software packages, you may run into an error indicating that the added PPA does not have a release file.

    This error is quite frustrating as it limits your ability to manage software packages in an efficient manner. In this guide, we will guide you on how you can resolve this issue and go back to using your system without an issue.

  • How To Install Dotnet Core on Ubuntu 20.04 LTS - idroot [Ed: If for some reason you wish to help Microsoft]

    In this tutorial, we will show you how to install Dotnet Core on Ubuntu 20.04 LTS. For those of you who didn’t know, The .NET Core is a free and open-source software framework and open-source software framework. It is developed by Microsoft. It is developed by Microsoft. .NET Core is a very powerful framework. It is usually used to develop web applications.

  • How to install steam on ArcoLinux | Arcolinux.com

    The motto of ArcoLinux is Learn, have fun and enjoy.

    This is the have fun part for sure.

    We install steam via the terminal.

    The desktop you install steam on does not matter.

  • How to manage Linux permissions for users, groups, and others | Enable Sysadmin

    How to manage permissions and ownership for users, groups, and all others to resources such as directories and files.

  • How to set up DaVinci Resolve for High Resolution displays in Linux - Real Linux User

    The non linear video editor DaVinci Resolve on Linux is an incredible free tool, but does not give correct out of the box scaling for high resolution displays, so it will show an UI with very small icons and characters. Even on my 4K 32 inch monitor DaVinci Resolve is at first start up almost unusable, so if you have for example a smaller 27 inch monitor with the same 4K or higher resolution, the UI components are terribly small. In this short article I will show how you can change the scaling of DaVinci Resolve. So join me to see how to set up DaVinci Resolve for High Resolution displays in Linux.

today's howtos

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today's howtos

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  • How To Install Redis on Linux Mint 20 - idroot

    In this tutorial, we will show you how to install Redis on Linux Mint 20. For those of you who didn’t know, Redis is an open-source in-memory key-value data store. It can be used as a database, cache and, message broker, and supports various data structures such as Strings, Hashes, Lists, Sets, and more. Redis provides high availability via Redis Sentinel and automatic partitioning across multiple Redis nodes with Redis Cluster.

    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 installation of Redis on a Linux Mint 20 (Ulyana).

  • How to Download YouTube Videos in Linux | FOSS Linux

    YouTube is one of the websites with the most videos on the internet (as of writing this post, it is number one on the list). For some reason, you might need to download some videos to watch later while offline. Situations like following a tutorial playlist about a project or listening to your favorite songs while offline requires you to download some of these videos.

    Whatever your reason might be, we will show you how you can download YouTube Videos on a Linux system. We will guide you through both the graphical (GUI) and the command-line way. Let’s dive in!

  • How to play Minecraft Bedrock Edition on Linux [Ed: There are Free software clones that are not Microsoft's]

    Minecraft Bedrock Edition works on Linux with the help of the Minecraft Bedrock Launcher for Linux. It is an unofficial app that makes the game work on Linux with the Minecraft Android APK.

  • [Older] How to install Redis on Ubuntu Linux

    Redis is open source software used as a database and cache that sits in memory, allowing for exceptional performance. When you're ready to give this lightning fast program a try, the developers recommend installing Redis on a Linux system, and what better candidate than Ubuntu Linux?

    In this tutorial, we'll guide you through the step by step instructions of installing Redis (both server and client) on Ubuntu. Then, we'll verify that it's connectable and configure the UFW firewall to allow incoming connections.

  • How to install the NVIDIA drivers on Fedora 33 with Hybrid Switchable Graphics

    This is guide, how to install NVIDIA proprietary drivers on Fedora 33 with Hybrid Switchable Graphics [Intel + Nvidia GeForce]

today's howtos

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  • Shading in Blender – Linux Hint

    Shading is an act of adding shade to a drawn object to give it a look and a perception of depth. Nobody likes white bland 3D objects. In 3D modeling, it is very significant to give objects some color material or texture. The process of adding shades to color materials and textures is called shading. Shading is so essential in 3D modeling that Blender has a dedicated workspace for shading.

    Shading workspace will automatically bring us in the “Look Dev” mode. Look Dev mode approximates lights and gives a general idea of the output of the object or scene. The shader editor will show the shader nodes of the selected object. Every object in Blender can be assigned a default material with white shading. And these shaders can be manipulated in the Shading workspace. You can add material to any object by going into the material tab.

  • Blender Viewport Navigation – Linux Hint

    The viewport is the main view of Blender that a user sees after getting it installed. At first look, it may appear intimidating, but it has become a lot comprehensible after the launch of the 2.80 version. The interface is less complicated and simple to learn.

    The viewport is a window that allows you to look around the scene or object you created. Viewport and camera view can be confusing, but both are not similar. A camera is an object in the scene, whereas the viewport is a part of the interface.

    Basics of navigating viewport include rotating, zooming, and panning the perspective of the view. There are various ways to navigate in the viewport.

  • Blender Cloud Rendering – Linux Hint

    How does it feel when you create a beautiful scene in Blender with high definition textures, shaders, particles, and volumetric effects and when you click on rendering, it just says that you need 2 hours to render just one frame? Yes, it feels discouraging. It is not easy to render a high-quality image or animation using an ordinary workstation.

    It is not a piece of cake to render in Blender, especially when working in Cycles (rendering engine). 3D rendering requires a lot of computing power. If you are rendering an animation, then it will take much more power and time. It would be best if you had a powerful PC with high-end specifications to get decent results. The trouble is the affordability of a robust workstation; they are costly. But this issue is fixable; just use cloud rendering.

  • Delete/Drop a Database in MySQL – Linux Hint

    MySQL is an RDBMS (Relational Database Management System) that is famous for its speed and easy-to-use interface. In this article, you will learn about the different methods to delete or drop a database in MySQL. In this article, we assume that you already have a working knowledge of the creation and listing of databases in MySQL. So, feel free to read on if you have already installed MySQL on your system and have some dummy databases in MySQL that you want to delete.

  • CentOS 8 Restart Network – Linux Hint

    Among the most frequent system administration practices is the process of restarting the network. To connect your machine with the Internet, a sound networking service is always required. At times, due to undesirable issues, the networking service in a particular operating system may start malfunctioning. If the issue is temporary, then it can be resolved simply by restarting your networking service.

    There are multiple methods that you can use in any operating system to restart the system’s networking service. Today, we walk you through the two primary methods of restarting the network service in CentOS 8, one of the most popular distributions of the Linux operating system.

    If you are using a system based on CentOS 8 and are not able to establish a secure connection with your network, you would be shocked by how many issues a quick restart can solve. You can restart the Linux networking service using various commands, but you must execute the commands to restart the network using sudo or su commands as a root user.

  • Installation of Sublime text editor on Ubuntu 20.04

    Sublime Text is a well-known text editor used to write source code for web development. This tutorial will assist you in installing Sublime Text on an Ubuntu 20.04 machine.

  • WireShark in-depth Tutorial – Linux Hint

    Wireshark is an open-source and free network traffic inspection tool. It captures and displays packets in real-time for offline analysis in a human-readable format with microscopic details. It requires some sound knowledge of basic networking and is considered an essential tool for system administrators and network security experts.
    Wireshark is the de-facto go-to tool for several network problems that vary from network troubleshooting, security issue examination, inspecting network traffic of a suspicious application, debugging protocol implementations, along with network protocol learning purposes, etc.

    The Wireshark project was initiated in 1998. Thanks to the global networking expert’s voluntary contribution, it continues to make updates for new technologies and encryption standards. Hence, it’s by far one of the best packet analyzer tools and is utilized as a standard commercial tool by various government agencies, educational institutes, and non-profit organizations.

today's howtos

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  • How to Access Google Drive on Debian 10

    Google Drive is a cloud storage and synchronization service that allows users to keep, synchronize, and share files across many devices. It offers 15GB of free storage space for each Google account to store files.

  • Keep track of multiple Git remote repositories | Opensource.com

    Working with remote repositories gets confusing when the names of the remote repositories in your local Git repo are inconsistent.

  • Merging and sorting files in Linux: Easier than you think
  • How to Administrate CloudLinux OS from Command Line
  • 5 Ways to Install IntelliJ IDEA on Ubuntu

    Here learn how to download and install IntelliJ on Ubuntu. Intellij Idea can be installed simply from GUI and also from CLI.

  • How to Install Htop in Centos 8? – Linux Hint

    Htop is more like an immersive Centos 8 system process viewer and device monitor. It shows resource-usage measures in color and helps you to conveniently keep track of the performance of your system as an enhancement. With both an additional array of choices and a clear picture on the board, it is the same as the standard main command. It shows details about the usage of Processor & RAM, tasks being done, average load, and uptime. Besides, Htop shows a list of all operating processes and can even show it in a tree-like structure. If you are interested to interactively control your device, then one of your best choices ought to be the Htop command. It runs on all distributions of Linux, and in most situations, is enabled by default.

    In this tutorial, you will learn to install Htop on Centos 8 using the command-line.

  • How to Install Steam on NixOS? – Linux Hint

    When installing things on NixOS, you need to have a package in the right format on the nixos.org web page. Steam is available, but some quirks may trip you up when you try to install it. You will hear more about this here.

    In particular, it is a non-free software package, so you must enable this option. You will also need to handle the ‘glXChooseVisual failed’ problem. The process will work one way in NixOS and another way on other distributions. It is more complex with just the Nix package manager.

  • How to Install and Configure Angular CLI on Linux Distributions

    Modern and dynamic websites require many features, menus, and widgets to make the website user-friendly and reach the perfect marketplace. No matter which tool you use to create your website, javascript is always required to draw the finishing line

  • How to Install and Use FFmpeg in CentOS 8? – Linux Hint

    If you’d like a fast way of converting between audio and video files in Linux and would like something that doesn’t chew on resources and does the task properly, then you may give FFmpeg a try. FFmpeg is vital for keeping some level of familiarity between files uploaded by multiple users, as well as help maintain your storage space under control. When using FFmpeg, you can translate, adjust sample rates, record audio/video streams, and resize files between different video and audio formats. It provides a collection of audio and video libraries that are shared, including libavcodec, libavformat, and libavutil. Whenever it refers to converting files, FFmpeg has several command-line choices, and it is also recommended to use it from the CLI. Follow me on, and I’ll lead you to install FFmpeg in Centos 8.
    FFmpeg is not offered in the default repositories of Centos 8. You may opt to build FFmpeg utilities from the source or install them from the Negativo17 directory via DNF. In this article, we’ll move ahead with the second choice. It is also the fastest way to implement FFmpeg on the Centos 8 OS.

  • How to Kill Zombie Processes on Linux

    Linux, of course, has to keep track of all the applications and daemons running on your computer. One of the ways it does this is by maintaining the process table. This is a list of structures in kernel memory. Each process has an entry in this list that contains some information about it.

    There isn’t a great deal in each of the process table structures. They hold the process ID, a few other data items, and a pointer to the process control block (PCB) for that process.

    It’s the PCB that holds the many details Linux needs to look up or set for each process. The PCB is also updated as a process is created, given processing time, and finally destroyed.

  • How to Setup a Firewall with UFW on Debian 10 Linux - Linux Concept

    Nowadays, a Firewall is an essential utility and property of any system for security; by default Debian Operating system having a firewall configuration tool named UFW (Uncomplicated Firewall). UFW is a user-friendly front-end tool to manage iptables firewall rules. It provides you more straightforward methods to manage iptables as the name of this tool start from Uncomplicated.

  • How to Use arping Command in Linux – Linux Hint

    To a network administrator, the ARP protocol may sound familiar. ARP is a protocol that Layer 2 devices implement for discovering and communicating with each other. The arping tool works using this protocol.
    Now, why would you need arping? Imagine you are working with a small office network. Using the classic ping command to ping hosts to verify their availability is very tempting, right? Well, if you are using the ICMP protocol, then you are actually performing ARP requests for probing devices in the network.

    This is where the arping tool comes in. Like ping, arping pings network hosts using network layer ARP packets. This method is useful for hosts that do not respond to Layer 3 and Layer 4 ping requests.

    This article shows you how to use arping command in Linux.

  • How to configure YAML schema to make editing files easier - Red Hat Developer

    YAML is a friendly data serialization standard that works with all programming languages. While configuration files are often defined in YAML, it can even be used as a programming language, like the workflow language at Google, or Apache Camel K.

    It has the advantage of not having any braces, making it lightweight visually. One of the drawbacks is that editing YAML files may not always be easy. For instance, writing a tag at the wrong indentation level can be hard to detect. To help with editing, it is possible to provide a YAML schema that can be leveraged by a large set of integrated development environments (IDEs). Unfortunately, this practice is not widespread. Consequently, users waste time searching for a missing or extra space and browsing documentation.

    In this article, you will discover the benefits of providing a YAML schema and how to make it consumable for all your users, making it easier to edit YAML files.

  • How to connect and share data between two Linux systems

    I got an interesting request (not from singles in my area). One of my readers asked me, how does one go about connecting two Linux boxes - I presume for sharing purposes. This is a topic I've touched upon frequently, but often indirectly. As Commandant Lasard from Police Academy would say, there are many, many, many, many different ways to do this.

    So perhaps it's time for a proper tutorial. I will show you several common, robust ways to have two Linux systems communicate over network. We'll do it on the command line, then move up to file managers, and finally, also perform a remote data backup using a friendly GUI tool. Let's start.

  • How to manage user passwords on Linux

    If you’re a Linux admin, you probably take care of any number of servers, all of which contain numerous users. Those users log in via various means or protocols, such as SSH, FTP, HTTP. In order to successfully log in, those users have to have—passwords.

  • Linux patch management: How to back out a failed patch | Enable Sysadmin

    A good patch management plan always includes a good patch backout plan.

today's howtos and proprietary software

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HowTos
  • Everything you need to know to become an expert Linux admin - TechRepublic

    IT professionals have to be life-long learners with quarterly goals for improving their skills to keep up with the industry, particularly when it comes to Linux. System administrators should be constantly looking for new ways to improve their skills for managing Linux servers and distributions. 

    This roundup of TechRepublic Premium resources, by Linux expert Jack Wallen, can help you fill the holes in your skills gap. There is advice for mastering the command line as well as selecting the best GUI tool. Maybe your challenge is managing users or permissions? Wallen has got you covered with that task, too.

    Sysadmins can use any one of these resources to get smarter about Linux and bring value to the IT team.

  • PAM Bypass: when null(is not)ok

    Someone enters an IRC support channel and proclaims their dovecot server has been hacked and a non existing user sends spam email from their server. The initial reaction might be something along the lines of

    Wat

    With the following assumption that the user clearly did something wrong. Hosting email is difficult after all. I don’t quite recall how rest of the support went, but it was solved and the root cause was not found. However, we keep on rolling! Then someone posts about a similar incident on r/archlinux.

    Now, if this happens twice something is amiss! Arch has had a few issues with PAM lately, thus it could be that there is a configuration issue. Johannes and I try to reproduce, but I don’t get far and Johannes keeps on working on the issue.

  • How to install Discord on Linux Mint 20 - YouTube

    In this video, we are looking at how to install Discord on Linux Mint 20.

  • How to install Discord Canary on a Chromebook

    Today we are looking at how to install Disord Canary, the Alpha Builds of Discord, 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.

  • Build your own ruler in the massive Crusader Kings III update out now | GamingOnLinux

    Paradox has released the big 1.2 update to Crusader Kings III, with it comes a fun new feature that lets you properly design your initial ruler.

    Since the release you've been able to step into the shoes of pre-set historical monarchs and leaders. Carrying their legacy on through the ages, and across the world. Now though, Paradox are giving us much more control over our game and our leader. You can now design them yourself with various options including appearance, age, ethnicity, sexual orientation, and more with the results sometimes looking quite amusing. You start by choosing a location, then the option to design your own will be available.

    Unlike how it was handled with Crusader Kings II, this is an entirely free feature added to the base game.

  • Vivaldi Web Browser Now Has a Built-in Email Client

    A fully-featured email client is the latest feature to be added to Vivaldi, the Chromium-based web browser.

    The bods beavering away on the wannabe web fave have added a native IMAP and POP3 email client to the app, as well as a RSS feed reader, and multi-account friendly calendar. Other recent feature additions have included a word processor and a built-in arcade game.

    Although Vivaldi Mail (as the feature is known) is currently of a ‘pre-Beta quality’ it is fully functional and works relatively well already.

    On paper Vivaldi Mail will work with most modern e-mail services via IMAP or POP. Alas, for now, this doesn’t include Google or Gmail accounts.

today's howtos

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  • Automated CI/CD Deployment to App Engine with Cloud Build - Cloudbooklet

    Automated CI/CD Deployment to App Engine with Cloud Build. In this guide you are going to learn how to setup a CI/CD deployment which deploys the code to App Engine when a push is made to a specific branch in GitHub using Google Cloud Build.

  • Ansible Roles: Complete Beginner's Guide [RHCE Ansible Series]

    This is the ninth chapter of RHCE Ansible EX 294 exam preparation series. You'll understand how roles are structured in Ansible. You'll also learn to use ready-made roles from Ansible Galaxy and create your own custom Ansible roles.

  • How to remote access Linux from a Linux system

    Are you trying to figure out how to access your Linux desktop from your Linux laptop? Don’t know the first thing about remote access? We can help! Follow along with this guide as we show you how to access your Linux desktop from your Linux laptop!

  • How to add controller support to Minecraft on Linux

    Minecraft is one of the few mainstream video game franchises to support the Linux platform. That said, although the game works natively on Linux, it does not have controller support.

  • How To Install ModSecurity Apache on Ubuntu 20.04 LTS - idroot

    In this tutorial, we will show you how to install ModSecurity Apache on Ubuntu 20.04 LTS. For those of you who didn’t know, ModSecurity is an Apache module that helps to protect your website from various attacks such as cross-site scripting, SQL injection attacks, path traversal attacks, etc. ModSecurity can also monitor web traffic in real-time and help you detect and respond to intrusions.

    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 installation of ModSecurity Apache on an Ubuntu 20.04 Focal Fossa.

  • Enable File Browser in Default Gedit Text Editor in Ubuntu 20.04 | UbuntuHandbook

    Editing files regularly with the default text editor in Ubuntu? Without looking your documents through Files (Nautilus file browser), gedit offers a built-in file browser mode to make life easy.

    And this is the beginner’s guide shows you how to enable this built-in file browser mode in Gedit text editor.

    1. First open the text editor either from system applications menu or by click opening a document file.

    2. When the editor opens, go to menu (the icon after Save button) -> View, and enable Side Panel. You can alternatively press F9 on keyboard to toggle ‘Side Panel’ on / off.

  • Container image short names in Podman | Enable Sysadmin

    This new feature, pulling images with Podman by using short names, includes more security, greater convenience, and is another step forward for container management.

    [...]

    When people approach me to talk about Podman and containers, I usually ask if they are familiar with Docker. Most people are, and the conversations quickly move beyond the fact that Podman can act as a drop-in replacement for Docker. In fact, there are many useful and innovative features that make Podman special. Podman has excellent rootless support, it can generate systemd unit files for easily containerizing systemd services, and it has a powerful RESTful API that allows for running Podman on macOS and Windows. Those are just a few of the great features.

  • Looking forward to Linux network configuration in the initial ramdisk (initrd) | Enable Sysadmin

    One of the tasks that the initrd might be responsible for is network configuration.

  • The Ultimate Guide to Dolphin Emulator. - Make Tech Easier

    Today you can find hundreds of emulators for dozens of old systems for multiple platforms. However, Dolphin manages to stand out from the crowd by achieving something almost impossible: combining advanced features and a high degree of compatibility with ease of use.

    With Dolphin, which is available for Windows, macOS, Linux, and Android, you gain access to the vast majority of titles for Nintendo’s GameCube and Wii consoles. Theoretically, since it’s easy to use, you only have to run it, add some games, and play. Practically, though, it’s worth investing some time to customize and configure Dolphin to your liking. This way, you’ll be able to take advantage of its advanced features and play your games better than you would on the actual hardware.

  • Terminal Vitality

    Ever since Douglas Engelbart flipped over a trackball and discovered a mouse, our interactions with computers have shifted from linguistics to hieroglyphics. That is, instead of typing commands at a prompt in what we now call a Command Line Interface (CLI), we click little icons and drag them to other little icons to guide our machines to perform the tasks we desire.

    Apple led the way to commercialization of this concept we now call the Graphical User Interface (GUI), replacing its pioneering and mostly keyboard-driven Apple // microcomputer with the original GUI-only Macintosh. After quickly responding with an almost unusable Windows 1.0 release, Microsoft piled on in later versions with the Start menu and push button toolbars that together solidified mouse-driven operating systems as the default interface for the rest of us. Linux, along with its inspiration Unix, had long championed many users running many programs simultaneously through an insanely powerful CLI. It thus joined the GUI party late with its likewise insanely powerful yet famously insecure X-Windows framework and the many GUIs such as KDE and Gnome that it eventually supported.

  • Build a motion detection system with a Raspberry Pi | Opensource.com

    If you want a home security system to tell you if someone is lurking around your property, you don't need an expensive, proprietary solution from a third-party vendor. You can set up your own system using a Raspberry Pi, a passive infrared (PIR) motion sensor, and an LTE modem that will send SMS messages whenever it detects movement.

  • Create a machine learning model with Bash | Opensource.com

    Machine learning is a powerful computing capability for predicting or forecasting things that conventional algorithms find challenging. The machine learning journey begins with collecting and preparing data—a lot of it—then it builds mathematical models based on that data. While multiple tools can be used for these tasks, I like to use the shell.

    A shell is an interface for performing operations using a defined language. This language can be invoked interactively or scripted. The concept of the shell was introduced in Unix operating systems in the 1970s. Some of the most popular shells include Bash, tcsh, and Zsh. They are available for all operating systems, including Linux, macOS, and Windows, which gives them high portability. For this exercise, I'll use Bash.

  • Use SSH keys for authentication

    Use SSH keys for authentication without password when you are connecting to your server. simple and secure login process.

  • Authentication and authorization using the Keycloak REST API - Red Hat Developer

    Enabling authentication and authorization involves complex functionality beyond a simple login API. In a previous article, I described the Keycloak REST login API endpoint, which only handles some authentication tasks. In this article, I describe how to enable other aspects of authentication and authorization by using Keycloak REST API functionality out of the box.

  • Hording AD groups through wbinfo « On the third side

    In a samba setup where users and groups are fetched from Active Directory to be used in a unix/linux environment, AD may prohibit the samba winbind tools like wbinfo to recurse into its group structure. You may get groups and users and their corresponding gids and uids, but you may not get the members of a group.

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