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today's howtos

Submitted by Roy Schestowitz on Tuesday 14th of December 2021 12:24:57 PM Filed under
HowTos
  • installpkg with version check | Weldr

    Lorax version 36.1 added a new feature to the template’s installpkg command. This was brought about by a change to grub2 where the latest version installs the unicode.pf2 file to a different path than what is expected by the Lorax templates. This ended up causing a bit of a mess because some of the tests depend on building a new boot.iso but the new boot.iso cannot be built until the templates have been fixed to use the new path. The error wasn’t completely obvious, and wouldn’t happen until after running through most of the boot.iso build.

    First a bit of background for those not familiar with how Lorax works. Lorax builds the boot.iso by parsing a set of templates that define what packages to install, what files (and packages) to remove, and what to customize to make the iso bootable. These templates use dnf to install the packages, but the only dependency they had was on package names. There was no way to express version requirements in the runtime-install.tmpl template.

    Usually you don’t want to include version requirements in Lorax templates, that would just make it more difficult to keep up to date with the package changes. But in the case where you have a template that depends on a specific package version’s behavior – or change in behavior – it would be useful for the boot.iso build to fail early and with a clear error message.

  • Extract SCHEDULE from an openQA job - openQA bites

    Then using openqa-clone-job (and derivates) one can use the SCHEDULE variable to clone a test run with a custom set of test modules. This is particular useful, when developing a new test case and you need a verification run with e.g. one additional test module or excluding some failing ones. However it is sometimes cumbersome to type out a neverending of tests into a custom SCHEDULE variable, if the amount of test modules exceeds 5 or more tests (e.g. extra_tests_textmode - good luck!).

  • tail -f /var/log/messages | grep vegard: Using C-Reduce to debug LaTeX errors

    My wife is currently writing her HDR thesis (in France, this is an "accreditation to supervise research"). As part of this, she asked me if it would be possible to split her bibliography into two parts: one containing her own publications and another for the rest of her references.

    After a tiny bit of searching, I found this stackoverflow answer: https://tex.stackexchange.com/a/407363

    However, the answer uses the biblatex package, and my wife was using plain BibTeX. (Dun dun duuun!)

    No matter, we can probably switch to biblatex, right? We only had about 6k lines of LaTeX source code and 3k lines worth of BibTeX data, how hard could it be?

  • Dolphin – Wii Emulator (even the newest versions of Ubuntu) | Linux.org

    With gaming consoles being sought after at an all-time high, most consoles are hard to find or too expensive. Older consoles, such as the Wii, are favorites for some people. For those running Linux, we can use a Wii emulator called Dolphin to play Wii games.

    The process is a fairly simple one that will get you up and running so you can play Wii games on your Linux system.

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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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