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Programming Leftovers

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Development
  • Run your own CI pipeline with GStreamer's new monorepo

    Recently, the GStreamer project merged all its git repositories into a single, unified repository, often called monorepo. You can read more about this change here.

    One benefit is it greatly simplifies maintaining custom, project specific, GStreamer patches. Previously, projects that needed to develop, or backport, some patches had to go through multiple steps to complete the task. Projects had to fork various git repositories (e.g. gst-plugins-good, gst-plugins-bad, etc), each repository would then have a new branch with the extra commits, and often, gst-build was used to pull all of these repositories together (and gst-build itself had to be patched beforehand to download forked repositories). Thankfully, all that will be a thing of the past.

  • GitOps: Best practices for the real world

    There is a common misunderstanding about how GitOps should be applied in real-world environments. Developers equate Infrastructure as Code (IaC) with GitOps in concept or believe that GitOps can only work with container-based applications — which is not true. In this blog, you will learn what GitOps is and how to apply its principles to real-world development and operations.

  • 5 Open Source tools for Documenting your React Component - DEV Community

    Documenting our code is of course not the easiest part of the development process and at times developers even avoid it saying that it's really boring. In this article, we will take an overview of 5 tools whose purpose is to help us in documenting our React Components with bare minimum efforts thus, which have made documenting our React Components a piece of cake.

  • Meson version bumped to 0.59.2

    Meson is a source package build system. EasyOS has version 0.53.0, however, I wanted to compile the latest 'pipewire' package and it requires meson version 0.54.0 or later.

    So, have recompiled meson in OpenEmbedded, now version 0.59.2.

  • Reviving Net::Pcap

    ... in which I look at how existing patches floating on the internet can be integrated into Net::Pcap to make it compile again.

    Net::Pcap is dear to me, as I have a module implementing an HTTP sniffer using its network capture. So I like it when the module compiles without too much manual work.

  • Smart Flower Pot Build Is All About That Base | Hackaday

    This attractive beginner build is a Python-powered project that runs on a PyPortal Titano and has a speaker that anthropomorphizes the thing so it can berate you politely ask for water in English. But the real magic of this build is in the enclosure itself.

  • Best Plugins for PyCharm

    Plugins are add-ons that enable you to optimize your applications. For instance, if you want to live-stream a soccer match on a website, you may need to install a plugin because your browser doesn’t come with preinstalled streaming tools.

    You might want to think of plugins as an integral part of your computing and web browsing, making sure each activity you do is running smoothly, even if it is just about viewing a document or surfing a blog.

  • Duplicate records differing only in unique identifiers

    There's a big data table with lots of fields and lots of records. Each record has one or more unique identifier field entries. How to check for records that are exactly the same, apart from those unique identifiers?

    I've been tinkering with this problem for years, and you can read my last, fairly clumsy effort in this BASHing data blog post from 2020. Here I present a much-improved solution, which has also gone into A Data Cleaner's Cookbook as an update.

    In 2020, the fastest and most reliable method I used to extract these partial duplicates was with an AWK array and two passes through the table. In the first pass, an array "a" is built with the non-unique-identifier field entries as index string and the tally of each different entry as the value string. In the second pass through the table, AWK looks for records where the value string for the same index string is greater than one, and by default prints the record.

  • Excellent Free Tutorials to Learn Bash - LinuxLinks

    Bash (acronym for the ‘Bourne-Again-SHell’) is the GNU Project’s shell and programming language. It’s an sh-compatible shell that incorporates useful features from the Korn shell (ksh) and C shell (csh). Bash has become a de facto standard for shell scripting. It runs on almost all versions of Unix and a few other operating systems including Windows platforms.

    A Unix shell is both a command interpreter and a programming language. As a command interpreter, the shell provides the user interface to various utilities. The programming language features of Bash allow these utilities to be combined. Files containing commands can be developed, and become commands themselves. A shell script is therefore a quick way of prototyping a complex application. Shell scripting follows the classic Unix philosophy of breaking complex projects into simpler subtasks, of chaining together components and utilities.

    Like all Unix shells, Bash supports filename globbing (wildcard matching), piping, here documents, command substitution, variables and control structures for condition-testing and iteration. The keywords, syntax and other basic features of the language were all copied from sh.

    Here’s our recommended free tutorials to learn Bash.

  • Classic 80s Text-To-Speech On Classic 80s Hardware | Hackaday

    Those of us who were around in the late 70s and into the 80s might remember the Speak & Spell, a children’s toy with a remarkable text-to-speech synthesizer. While it sounds dated by today’s standards, it was revolutionary for the time and was riding a wave of text-to-speech functionality that was starting to arrive to various computers of the era. While a lot of them used dedicated hardware to perform the speech synthesis, some computers were powerful enough to do this in software, but others were not quite able. The VIC-20 was one of the latter, but thanks to an ESP8266 it has been retroactively given this function.

    This project comes to us from [Jan Derogee], a connoisseur of this retrocomputer, and builds on the work by [Earle F. Philhower] who ported the retro speech synthesis software known as SAM from assembly to C which made it possible to run on the ESP8266. Audio playback is handled on the I2S port, but some work needed to be done to get this to work smoothly since this port also handles the communication with the VIC-20. Once this was sorted out, a patch was made to be able to hear the computer’s audio as well as the speech synthesizer’s. Finally, a serial command interface was designed by [Jan] which allows for control of the module.

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.