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today's leftovers

Submitted by Roy Schestowitz on Saturday 27th of March 2021 05:21:13 PM Filed under
Misc

  • Raspberry Pi dog detector (and dopamine booster)
  • Linux's hardware monitoring can lie to you

    At a minimum, this tells me that straightforward interpretations of hwmon values may be misleading because you need to look at other hwmon values for context. More generally, hwmon values are only as trustworthy as the combination of the hardware and the driver reporting them and clearly some combinations don't report useful values. Common tools, like lm_sensors, may not cover corner cases (such as the PWM duty cycle being 0), so looking at their output may mislead you about the state of your hardware. In the end, nothing beats actually looking at things in person, which is a little bit alarming in these work from home times when that's a bit difficult.

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  • Compile times, and why "the obvious" might not be so

                     

                       

    One thing which got me thinking the other day was seeing a post where someone was complaining about build times. Apparently they can be really long and annoying. I got the impression they were starting from scratch every time, and wondered why anyone would do that. Then I started thinking about this double-edged sword of things taken for granted and figured "because nobody bothered to tell them about it".

                       

    So, in that vein, I am going to describe something that happens all the time when I work on stuff, and it seems completely ordinary and boring to me, but might well seem like magic to someone who hasn't seen it yet. It's not magic, though. It's just another way of doing stuff.

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  • Opensource from an author point of view

                     

                       

    Hi, today's article will be a bit different than what you are used to. I am currently writing about my experience as an open source author and "project manager". I recently created a project that, while being extremely small, have seen some people getting involved at various level. I didn't know what it was to be in this position.

                       

    Having to deal with multiple people contributing to a project I started for myself on one architecture with a limited set of features is surprisingly hard. I don't say it's boring and that no one should ever do it, but I think I wasn't really prepare to handle this.

                       

    I made my best to integrate people wishes while keeping the helm of the project in the right direction, but I had to ask myself many questions.

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  • A Year in the Life of a Compiler Fuzzing Campaign

                     

                       

    In the summer of 2020, we described our work fuzzing the Solidity compiler, solc. So now we’d like to revisit this project, since fuzzing campaigns tend to “saturate,” finding fewer new results over time. Did Solidity fuzzing run out of gas? Is fuzzing a high-stakes project worthwhile, especially if it has its own active and effective fuzzing effort?

                       

    The first bugs from that fuzzing campaign were submitted in February of 2020 using an afl variant. Since then, we’ve submitted 74 reports. Sixty-seven have been confirmed as bugs, and 66 of those have been fixed. Seven were duplicates or not considered to be true bugs.

  • CrateDB takes distributed SQL DB fully open source with release of v4.5

    Crate.io has pushed out CrateDB 4.5, the latest version of its clustered SQL database for developers building machine data applications. With this release, the product is also now fully open source with all enterprise features of the database available under the Apache 2.0 license.

    Detailing the changes on its blog, Crate.io said it will no longer implement its Enterprise License, under which organisations paid for commercial use of the product. Instead, the complete set of CrateDB features will be available in a single open source version licensed under Apache 2.0.

  • We Open-Sourced our Encryption Software: Here's Why

    People spent an incredible amount of time and resources protecting their intellectual property from "thought thieves". An idea was born, and kept safely hidden from the world until slapped with a patent.

    But ideas are not a finite resource that should be locked away. When ideas are left to grow in the dark, they cannot flourish.

    While profits may be available in the short term, inhibiting widespread access to unique insights and original code can kill our potential for future growth - not just for inidividual projects but for industries at large.

»

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Dilution and Misuse of the "Linux" Brand

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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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