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Programming Leftovers

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  • Jonathan Dowland: LaTeX draft documents

    I'm writing up a PhD deliverable (which will show up here eventually) using LaTeX, which is my preferred tool for such things, since I also use it for papers, and will eventually be using it for my thesis itself. For this last document, I experimented with a few packages and techniques for organising the document which I found useful, so I thought I'd share them.

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  • Mock syscalls with C++

    I wrote and maintain some C++ code to stream high quantities of data as fast as possible, and I try to use splice and sendfile when available.

    The availability of those system calls varies at runtime according to a number of factors, and the code needs to be written to fall back to read/write loops depending on what the splice and sendfile syscalls say.

    The tricky issue is unit testing: since the code path chosen depends on the kernel, the test suite will test one path or the other depending on the machine and filesystems where the tests are run.

    It would be nice to be able to mock the syscalls, and replace them during tests, and it looks like I managed.

  • Qt 6.1.1 Released With 150+ Bug Fixes

    Following last month's release of Qt 6.1, the first point release of this latest Qt6 stable series is now available. 

    Qt 6.1.1 was issued on Monday with more than 150 bug fixes. This is just the first of at least two more planned point releases until Qt 6.2 LTS is ready for introduction. Qt 6.2 just entered its feature freeze and going through the release dance for planned release at the end of September. 

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  • Excellent Free Tutorials to Learn Imba

    Imba is a friendly full-stack programming language for the web that compiles to performant JavaScript.

    It has language level support for defining, extending, subclassing, instantiating and rendering DOM nodes.

    In Imba DOM elements and CSS are treated as first-class citizens. DOM elements are compiled to a memoized DOM, which is an order of magnitude faster than today’s virtual DOM implementations.

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.