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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

today's leftovers

     
  • What is Raspberry Pi 4 “Model B”? [Ed: I'm still waiting for them to formally apologise for going behind customers' backs, making secret deals with Microsoft to put Microsoft malware on all those devices]

    Raspberry Pi has conquered the world of SoC (System on a Chip). It has already garnered millions of followers since its release in 2012. Not only is it inexpensive, but it’s also versatile, modular, and multi-purpose. It has become popular not only as a credit-sized computer board but also as a controller in electronic, robotics, and IoT projects. The size, features, and price drive the popularity of the Pi, especially in the DIY community. To keep up with the current technological trends, the tiny board has undergone plenty of upgrades over the years, and there have been many varieties so it can cater to the needs and demands of its users. In 2019, the Raspberry Pi Foundation released the fourth generation of the multi-purpose board, the Raspberry Pi 4 B. It is the most powerful Pi to date, sporting huge upgrades from its predecessors. The compact board is touted to deliver a PC-level performance, and it didn’t disappoint.

  • Kentaro Hayashi: Grow your ideas for Debian Project

    There may be some "If it could be ..." ideas for Debian Project. If idea is concreate and worth to make things forward, it should make a proposal for Project Funding. [...] I'm not confident whether mechanism works, but Debian needs change.

  • Sam Thursfield: Calliope, slowly building steam

    There are some interesting complexities to this, and in 12 hours of hacking I didn’t solve them all. Firstly, Bandcamp artist and album names are not normalized. Some artist names have spurious “The”, some album names have “(EP)” or “(single)” appended, so they don’t match your tags. These details are of interest only to librarians, but how can software tell the difference? The simplest approach is use Musicbrainz, specifically cpe musicbrainz resolve-ids. By comparing ids where possible we get mostly good results. There are many albums not on Musicbrainz, though, which for now turn up as false positives. Resolving Musicbrainz IDs is a tricky process, too — how do we distinguish Multi-Love (album) from Multi-Love (single) if we only have an album name? If you want to try it out, great! It’s still aimed at hackers — you’ll have to install from source with Meson and probably fix some bugs along the way. Please share the fixes!

  • Neovide Is A Graphical Neovim Client Written In Rust

    Neovide is a really cool GUI client for Neovim. Although it essentially functions like Neovim in the terminal, Neovide does add some nice graphical improvements such as cursor animations and smooth scrolling. It even has me thinking about making it my new "vim" alias.

Linux 5.11.13, 5.10.29, 5.4.111, 4.19.186, 4.14.230, 4.9.266, and 4.4.266

Get involved with Mageia, become a Packager

With Mageia 8 just released and development for Mageia 9 getting underway in Cauldron, the unstable branch of Mageia, now is a great time to get involved with packaging. We are starting to look at the features that we want to include for Mageia 9, and as it is so early in the development cycle, now is the time for major developments, or big updates to key pieces of software. This is a great time to join the project as you can propose features you would like to see, help to implement large changes or see how a distribution evolves through development, stabilisation and then is released. If there is an application that you are interested in, if you want to help maintain part of the distribution, or if you want to learn something new, there are many opportunities to do so with the packaging team. Read more

Google does not want you to tell your players about your donation page

I recently updated Pixel Wheels banner image on Google Play. That triggered a review of the game: shortly after the update I received a message telling me Pixel Wheels was "not compliant with Google Play Policies". What nefarious activity does the game engage in? Sneak on users? Mine bitcoins? [...] Meanwhile you can still get the game from F-Droid or itch.io, since they do not have a problem with a link to a donation page. Read more