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today's leftovers

Submitted by Roy Schestowitz on Sunday 4th of July 2021 11:00:30 AM Filed under
Misc

  • Linux 5.14 With EXT4 Adds Interface To Help Prevent Information Leakage From The Journal - Phoronix

    The EXT4 file-system updates have been sent in for the ongoing Linux 5.14 merge window.

    Besides routine fixes and code improvements for this mature Linux file-system, EXT4 this cycle brings a noteworthy feature addition: support for triggering journal checkpoints from user-space in the name of extra privacy/security. The new EXT4_IOC_CHECKPOINT ioctl allows the journal to be checkpointed, truncated and discard or zeroed out.

  • GNU World Order 415

    The GNU Debugger ( **gdb** ) from the **d** series of Slackware Linux.

  • Announcing Date-ManipX-Almanac

    One of the remarkable things about the Date-Manip package is its flexibility in the matter of input. If I mean "tomorrow noon," I do not have to think of what today is, I simply specify "tomorrow noon," or its equivalent in any of sixteen other languages.

    One day, I thought: what about "tomorrow sunrise?" And thus was born Date-ManipX-Almanac.

    In principal, there can be support for any almanac event from any astronomical body in the Astro::Coord::ECI ecosystem. In practice at least most of them are covered, though I have not audited for 100% coverage. This includes the bodies in the Astro-Coord-ECI-VSOP87D distribution, should you want planets through Neptune. Pluto was not covered by the VSOP models -- its exclusion is not a political statement, at least not by me. Satellites are not supported, and currently there are no plans for them.

  • Modulo Operator in C with Examples

    It is a mathematical operator that uses the modulus operator. The remainder is determined by it. The % sign is used to represent it. The leftover could be zero in some situations, indicating that the integer is entirely divided by a divisor. The modulo operator is used in conjunction with arithmetic operators. Among two operands, the modulo operator operates. The modulo operator determines the residual of the integer by dividing the numerator utilizing a denominator. The leftover has always been an integer number. When there is no residual, it returns 0(zero) as that of the result.

    Let’s get started by logging in from the Ubuntu 20.04 Linux system and opening the terminal shell via the activity bar or a shortcut key Ctrl+Alt+T. Make sure that your system must have GCC compiler configured on it before going further. If not, install it via the below query. After that, you are good to go with the examples of Modulo operator in C language.

  • Check out these free offline alternatives to Microsoft's Office Suite [Ed: OpenOffice at the top of the list seem a bit surprising in 2021]

    Originally a product by Sun Microsystems, OpenOffice has been around for over 20 years and is today maintained by The Apache Software Foundation. The office suite has a word processor application for your text documents, a spreadsheet tool for your data tables, and a slide and presentation application. The suite also offers additional tools to create Math equations using a graphical user interface and another front-end application to manage databases.

    [...]

    An offshoot of the OpenOffice project, which The Document Foundation maintains, LibreOffice comprises a complete suite of applications for editing all types of documents. The suite includes Writer - a word processing and desktop publishing application, Calc - a spreadsheet creator and editor application, Impress - an application to create and edit slides for presentations, along with a few other productivity tools.

  • François Marier: Zoom WebRTC links

    In my experience however, Jitsi has much better performance than Zoom's WebRTC client. For instance, I've never been able to use Zoom successfully on a Raspberry Pi 4 (8GB), but Jitsi works quite well. If you have a say in the choice of conference platform, go with Jitsi instead.

  • Build your own adorable, talking WALL-E robot | Arduino Blog

    Film history is full of cute robots, but for our money, none are more charming than WALL-E. His vocabulary may be limited, but that doesn’t stop him from showing the full range of emotions through body language. Like Baby Yoda, WALL-E was an instant fan-favorite and a plethora of toys were made in his honor. If you can get your hands on one, Kevr102 has an Instructables tutorial that will walk you through how to bring that toy to life with the help of an Arduino.

    To complete this project exactly as Kevr102 describes, you will need a specific 7″ tall plastic WALL-E toy. That toy has motors for the tracks, arm movement, and head movement. Starting with that will save you the trouble of mechanical design and 3D printing work. But you will replace all of the motors to make them easier to control. In total, you will need two 360 degree servo motors, three heavy duty servo motors, and two micro servo motors.

»

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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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