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Programming Leftovers

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  • Joey Hess: Volunteer Responsibility Amnesty Day

    Happy solstice, and happy Volunteer Responsibility Amnesty Day!

    After my inventory of my code today, I have decided it's time to pass on moreutils to someone new.

    This project remains interesting to people, including me. People still send patches, which are easy to deal with. Taking up basic maintenance of this package will be easy for you, if you feel like stepping forward.


    The other reason it's less appealing to me is that unix tools as a whole are less appealing to me now. Now, as a functional programmer, I can get excited about actual general-purpose functional tools. And these are well curated and collected and can be shown to fit because the math says they do. Even a tiny Haskell function like this is really very interesting in how something so maximally trivial is actually usable in so many contexts.

  • Vanessa Christopher: Everybody Struggles

    Before Outreachy I did not have the slightest idea of what packaging was all about as a matter of fact it was completely new to me.

  • stop defining feature-test macros in your code – Ariadne's Space

    If there is any change in the C world I would like to see in 2022, it would be the abolition of #define _GNU_SOURCE. In many cases, defining this macro in C code can have harmful side effects ranging from subtle breakage to miscompilation, because of how feature-test macros work.

  • OpenBLAS 0.3.19 Released With Alder Lake & Sapphire Rapids Detection

    OpenBLAS as the popular, open-source BLAS (Basic Linear Algebra Subprograms) library implementation posted its newest release on Sunday.

    OpenBLAS 0.3.19 is the new release and brings CPU ID detection for the recently released Intel Alder Lake desktop processors, support for upcoming Xeon Scalable "Sapphire Rapids", and more:

    - Intel CPU detection for Alder Lake and Sapphire Rapids. On the Sapphire Rapids front is also an optimized SB-GEMM kernel.

  • Ravgeet Dhillon: Create an App Information Component in Nuxt

    You must have seen multiple apps which show the app’s information like app version and last updated at time in their footers or via a floating action button. In this tutorial, you’ll learn to create a component to show such kind of information in a Nuxt app.


    That’s it! You have successfully implemented an app information component in your Nuxt app. In the same way, you can add things like Changelog, What’s New, and more to your app by taking the help of publicRuntimeConfig in a Nuxt app.

  • CI/CD platforms: How to choose the right continuous integration and delivery system for your business - TechRepublic

    Continuous integration and continuous delivery have become mainstays in the development scene in the past few years, making them nearly a requirement for most development workflows. In recent years, new players have come into the market and brought new workflows and platforms to enable additional steps, automated testing and even automated deployment into the mix.


    In the software development life cycle, developers push code into a Distributed Version Control System such as GitHub, GitLab, Bitbucket or some other platform on a self-hosted system or other system. A continuous integration platform sits in between this, looking for changes pushed into the DVCS and executes builds on the codebase when certain triggers are met. Continuous integration triggers could be based around individual code pushes to a particular branch, merge of code from a pull request or based on a time-based schedule (nightly builds, weekly builds, etc.).

    The continuous delivery aspect of CI/CD allows software teams to easily and safely get builds into production environments by building code, testing the code and then getting those build artifacts into the production environment. With continuous delivery, builds are typically triggered manually or on a time-based schedule, tests suites are run and results are reported if there are any issues with the code; then afterward, artifacts are made available to ship into a production environment.

  • Writing a SNES assembler compiler/disassembler - Day 3

    When starting implementing the compiler part of this. I noticed that the grammar does not actually really work, especially if you introduce new lines. If I parse a file with 3 instructions, we catch the \n sometime and the asm-comment token is too greedy.

    Let's change the ws rule to only capture horizontal blank (space and tab) and introduce an eol token, this makes the grammar more clear on what we are working on also.

  • PDL 2.063_01 released

    There have been a couple of developments in PDL since the last announcement on here I could find, from 2013. To hypersummarise: 64-bit indexing, native complex number support, automatic pthreading using all available CPU cores, faster installation thanks to parallel-building, memory-mapped data, repository hosted on GitHub, easy to use "with" Inline.

  • Raku Advent Calendar: Day 21 – Santa Claus is Rakuing Along
  • Making a transect into a point and circle

    Another way to describe a straight-line transect is with its midway point plus the radius of a circle which includes the whole of the transect. In the Darwin Core scheme for recording biological data, that midway point is at decimalLatitude and decimalLongitude, and the circle's radius, or half the length of the transect, is the coordinateUncertaintyInMeters.

    Given the LINESTRING WKT for a transect, you can calculate the midway point and half the transect length in a single AWK command, as explained below.

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.