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today's howtos

  • Use oathtool Linux command line for 2 step verification (2FA)

    I do not wish to use Google Authenticator or Authy app that generates 2 step verification (2FA) codes on my iOS/Android phone. Is there any way I can produce 2FA codes from Linux command line for popular sites such as Gmail, Twitter, Facebook, Amazon and more?

    The mobile apps generate secure 2 step verification codes to protect your online accounts from hackers (bad guys). You get an additional layer of security. In addition to your password, you need to input 2FA codes for each login. This page explains how to use oathtool OTPs (one-time password) on Linux to secure your Gmail and other online accounts. Instead of waiting for text messages, get verification codes for free from the oathtool Linux command.

  • How to install the NVIDIA drivers on AlmaLinux 8 - LinuxConfig.org

    In this article we will be perform an installation of the NVIDIA Driver on AlmaLinux. Nvidia driver is needed by your NVIDIA Graphics GPU to function with better performance. To do this we are first going to identify your NVIDIA graphic card, download an appropriate NVIDIA driver , disable the default nouveau driver by modifying the GRUB boot menu and finally install a official NVIDIA driver.

  • How to install Jenkins using a .war file on AWS EC2 Ubuntu 20.04 instance

    Jenkins is an open-source Continuous Integration and Continuous Deployment tool. It is an automation tool that helps build, test and deploy software reliably. It is written in Java and comes with hundreds of plugins. Jenkins also supports the distribution of work across multiple servers. It is very easy to configure Jenkins and get started with it. In this article, we will install Jenkins using the .war file in Apache Tomcat. We will use AWS EC2 Ubuntu 18.04 server to perform this activity. You can even use a Virtual Machine on your local machine or remote server with Ubuntu 18.04 on it.

  • How to install Attack on the Deathstar by freds72 on a Chromebook

    Today we are looking at how to install Attack on the Deathstar by freds72 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.

  • How to configure network settings with Ansible system roles | Enable Sysadmin

    This is the second article in series using Ansible system roles. In the previous article, I introduced you to Ansible and system roles and provided some examples. System roles help you manage OS-level tasks like SELinux, managing network settings, NTP, etc. In that article, you saw an example where you changed SELinux mode using system.role-selinux role. In this article, I look at the network role in detail so that you can modify the remote machine network connections with a single playbook.

  • How to Set Up Multi-Factor Authentication for SSH on Ubuntu 20.04

    SSH is a “Secure Shell Protocol” used to connect and manage remote Linux systems securely over an unsecured network. It is very useful for system administrators to perform day-to-day tasks on the remote server. So securing an SSH server is an essential part of any system administrator.

    By default, you can connect to SSH with a password or using the private key. That means, it is only a single factor authentication. So it is a good idea to implement multi-factor authentication in the SSH server to add an extra layer of security. In multi-factor authentication, you will need to provide your system user password and another password generated on a mobile device. This will significantly enhance your server’s security.

    In this tutorial, we will show you how to set up multi-factor authentication for SSH on Ubuntu 20.04 VPS.

  • How to Install and Use Nmap on Linux Mint 20

    Nmap is a very popular free and open-source network security tool and port scanner. It has been designed to perform security scans and discover hosts on a network by sending different packets to them and then analyzing their responses. In today’s tutorial, I will show you how to install and use Nmap on a Linux Mint 20 system.

  • How to Change the Icon Size in Default File Browser in Ubuntu | UbuntuHandbook

    The default size of files and folders in Nautilus file browser does not meet you need? It’s easy to change it in all current Ubuntu releases with Gnome.

    Though you can’t find how to configure it in the System Settings and Gnome Tweaks, Ubuntu do provide an option to set an even larger or smaller icon size, and here’s the quick tip shows you how.

  • How To Install PostgreSQL on Manjaro 20 - idroot

    In this tutorial, we will show you how to install PostgreSQL on Manjaro 20. For those of you who didn’t know, PostgreSQL is a relational database management system that provides an implementation of the SQL querying language. It’s standards-compliant and has many advanced features like reliable transactions and concurrency without reading locks.

    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 PostgreSQL on a Manjaro 20 (Nibia).

  • What is Kubernetes ?

    Kubernetes is an open source platform originally developed by Google. Today it is supported and developed by the Cloud Native Computing Foundation. With Kubernetes, containers can be orchestrated. The platform enables the simplification and the automated setup, provision, operation, scaling and maintenance of the containers. It is the basis for many cloud-native applications that consist of microservices.

    The platform works on a master-slave basis with a structure consisting of pods, nodes and clusters. Containers can be operated on physical or virtual computers. Kubernetes provides a technical basis for modern cloud-native applications consisting of many individual microservices.

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.