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Free Software Leftovers

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  • `Writing a Technical Book

    I was inspired to write this post after reading a similar post called How to Write a Technical Book by SerHack. Not because there is something wrong with their post, but because I’d like to focus a bit more on what are your options, and also show how I like to work.

    During the last ten years, I have published six technical books about programming. Most of them are self-published works but I recently published Roguelike Development With JavaScript with Apress which is a traditional publisher famous for its programming books. My first popular book was Quick Guide for FirefoxOS Programming published a long time ago. I really like that it got featured in the Leanpub bestseller at the time, it made me really proud. Besides that, I’ve spent the last sixteen years working for a major publisher of Hindu Literature in English.

    The reason behind telling you all this, is because my comprehension about book writing has changed and evolved over time, and what I think is the best way to write a book today is not necessarily the same as my own choices in the past. Basically, I don’t want you to repeat my own mistakes.

  • The effect of CPU, link-time (LTO) and profile-guided (PGO) optimizations on the compiler itself

    In other words, how much faster will a compiler be after it's been built with various optimizations?

    Given the recent Clang12 release, I've decided to update my local build of Clang11 that I've been using for building LibreOffice. I switched to using my own Clang build instead of openSUSE packages somewhen in the past because it was faster. I've meanwhile forgot how much faster Smile, and openSUSE packages now build with LTO, so I've built Clang12 in several different ways to test the effect and this is it...

  • Chromium 90 packages – again 32bit related issues

    There’s new ‘chromium‘ and ‘chromium-widevine-plugin‘ packages in my repository. And chromium-ungoogled packages will follow soon.

    Chromium was upgraded to 90.0.4430.72 but unfortunately the 32bit package which I have built (twice) crashes immediately on startup. This happens both on Slackware 14.2 and on -current. The error message looks like it is something different than the glibc-2.3x related seccomp crash behavior in the previous Chromium 89.x releases.
    Since I don’t have hardware that is running a 32bit Slackware OS and could only test on QEMU virtual machines so far, I can not confirm with 100% certainty that the new Chromium will or will not work on your 32bit Slackware OS, which is why I also kept the older 32bit chromium-89.0.4389.114 package in the repository.
    Let me know about your experiences down here in the comments section! I am getting tired of begging Google developers not to break 32bit binaries every major release. I’d be grateful if people running 32bit Slackware who are affected by the 32bit Chromium crashes, would chime in. Else I will eventually have to drop 32bit support.

  • One more week of CfP

    Usually foss-north takes place ~April. This year, foss-north 2021 will be virtual. We shifted the date to the end of May to try to make it possible to at least go hybrid and have some sort of conference experience, but in light of the current COVID-19 situation and the pace of the roll-out of the vaccination programmes, we decided for a virtual event.

  • Go Embed and Angular

    Hi, there. Today’s article will be a rather short article. In this article I would like to showcase Go 1.16 new embed package. If you are familiar with Go you might know embedding functionality already from famous other libraries like go-bindata. The problem with go-bindata has been that upstream vanished one day and then multiple forks appeared and every company or person was doing their own thing with embedding assets into Go programs. With the new embed package this shall be changed and embedding files shall be officially supported and more easy in the future.

  • Dancer2 0.301002 Released

    On behalf of the Dancer Core Team, I'd like to announce the availability of Dancer2 0.301002. This release includes a number of enhancements and documentation changes along with several bugfixes. The most notable enhancement is a brand new command line interface, and I highly encourage you to check it out.

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.