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today's leftovers

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Misc
  • How to Set and List Environment Variables in Linux
  • Hardware hacking basics, Slackel + OSCAR | Choose Linux 17

    Getting into hardware hacking with Arduino, and analysing sleep data from CPAP machines.

    Plus a glimpse into the past in Distrohoppers.

  • Debian 11 Testing with XFCE 4.14 Run Through

    In this video, we are looking at Debian Testing Bullseye with XFCE 4.14.

  • Introducing Glean — Telemetry for humans

    In the last few years, Firefox development has become increasingly data-driven. Mozilla’s larger data engineering team builds & maintains most of the technical infrastructure that makes this possible; from the Firefox telemetry code to the Firefox data platform and hosting analysis tools. While data about our products is crucial, Mozilla has a rare approach to data collection, following our privacy principles. This includes requiring data review for every new piece of data collection to ensure we are upholding our principles — even when it makes our jobs harder.

    One great success story for us is having the Firefox telemetry data described in machine-readable and clearly structured form. This encourages best practices like mandatory documentation, steering towards lean data practices and enables automatic data processing — from generating tables to powering tools like our measurement dashboard or the Firefox probe dictionary.

    However, we also learned lessons about what didn’t work so well. While the data types we used were flexible, they were hard to interpret. For example, we use plain numbers to store counts, generic histograms to store multiple timespan measures and allow for custom JSON submissions for uncovered use-cases. The flexibility of these data types means it takes work to understand how to use them for different use-cases & leaves room for accidental error on the instrumentation side. Furthermore, it requires manual effort in interpreting & analysing these data points. We noticed that we could benefit from introducing higher-level data types that are closer to what we want to measure — like data types for “counters” and “timing distributions”.

  • Debugging TypeScript in Firefox DevTools

    Firefox Debugger has evolved into a fast and reliable tool chain over the past several months and it’s now supporting many cool features. Though primarily used to debug JavaScript, did you know that you can also use Firefox to debug your TypeScript applications?

    Before we jump into real world examples, note that today’s browsers can’t run TypeScript code directly. It’s important to understand that TypeScript needs to be compiled into Javascript before it’s included in an HTML page.

    Also, debugging TypeScript is done through a source-map, and so we need to instruct the compiler to produce a source-map for us as well.

  • Sponsor Article: why open frameworks matter

    The use of computers to control buildings was an inevitable consequence of the falling cost of the technology and the huge increase in the complexity of the equipment required to achieve comfort in large modern buildings. As with computers, the nascent BMS market was initially supplied by manufacturers who offered highly-proprietary systems which only they could install and maintain. As the technology matured, so the software to program the required control logic was made easier. As a result, a wider range of people could provide the engineering. Meanwhile, pressure from end users, who didn’t want to be tied to only one manufacturer for the life of the building or campus, led to the development of open protocol standards that could enable one manufacturers’ system to talk to another.

    However, since the way buildings are contracted tends to require a functionally-biased packaging of sub-contracts, each piece of controls equipment in a building developed separately, and each sub-sector developed its own standards. The result today is a plethora of ‘standard’ protocols which are used by the various sub-systems in a building; BACnet for HVAC, DALI and KNX for lighting, Modbus for electrical metering and power management, M-Bus for heat metering etc. Some protocols such as LONworks did manage for a while to gain traction in multiple segments, but its adoption has declined in recent years. So, although people still dream of there being ‘one standard to rule them all’, the reality is much messier, and the challenge of how to get systems talking to one another has not gone away.

  • Free Software Supporter - Issue 137, September 2019

    Defective by Design is calling on you to stand up against digital restrictions management and join us in celebration of the International Day Against DRM (IDAD) on October 12th, 2019. Keep an eye on defectivebydesign.org for further announcements.

  • Some Intel Firmware Binaries Will Reportedly Be More Liberally Licensed

    One interesting nugget of news from this week's Open-Source Firmware Conference is that some Intel firmware binaries pertaining to their Trusted Execution Technology (TXT) will be more liberally licensed under their simpler microcode/firmware license.

    Open-source firmware consulting firm 3mdeb shared that Intel will reportedly publish TXT-related binaries like BIOS and SINIT ACMs under a similar license to the Intel FSP and microcode.

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.