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today's leftovers

Submitted by Roy Schestowitz on Thursday 23rd of June 2022 05:41:39 AM Filed under
Misc
  • Cardano Foundation joins The Linux Foundation as a Gold Member

    We are delighted to announce our membership with The Linux Foundation, the nonprofit organization enabling mass innovation through open source. The Cardano Foundation has joined as a Gold member, becoming the only nonprofit active at this level.

  • Why Every Developer Should Learn Data Structures and Algorithms?

    Having proper knowledge of Data Structure and Algorithms makes a good identity for a Software Developer. The main reason behind this is that it improves developers’ problem-solving ability to a great extent. So tech giants like Google, Meta, Adobe, Amazon, Netflix, etc. hire software developers with in-depth knowledge of Data Structure and Algorithms as they are more capable of making the right decisions when it comes to problem-solving.

  • [Reposted] You Need to be Wrong (Sometimes)

    “Well-calibrated” means that if you predict something occurs with X% probability, then that event actually occurs X% of the time. Since predictions are often made on one-off events, another way of expressing calibration is that X% of predictions that you made with X% confidence should resolve in your favor. For example, if you make 100 predictions of 100 independent events, each with probability 75%, then you’d expect that (roughly) 75 of your predictions would be “correct”.

  • Bind together two data frames by their rows or columns in R

    Bind together two data frames by their rows or columns in R, To join two data frames by their rows, use the bind_rows() function from the dplyr package in R.

  • What willwould a Chromium-only Web look like?

    On the face of it, there is some sense to it – after all, most W3C and WHATWG specifications have been written algorithmically (rather than declaratively) for a while now. Why not just converge on a single actual codebase? That way, interop on things like HTML parsing is perfect, but people can still choose the browser with the features (e.g., privacy protections) that they want.

    It’s also not that far-fetched. Microsoft has already ditched their engine for Chromium; we’re all worried about Mozilla’s health and long-term (or even medium-term) viability, and Apple is only one competition judgement away from having to open up iOS to other engines.

    After all, the code is what determines what browsers are capable of and therefore it defines the shape of the Web. Chromium already has a high market share of browser engines; why not just formalise it?

    Putting aside the many arguments one might raise about diversity, risk management, innovation, and so on, I want to focus on one aspect of this potential change – governance.

  • Some network speeds and network related speeds we see in mid 2022

    On 1G connections, anything can get wire bandwidth for streaming TCP traffic (or should be able to; if it can't, you have some sort of problem). On 10G connections, a path between Linux machines without a firewall in the middle should readily run over 900 Mbytes/sec for a TCP connection without any specific tuning (and without Ethernet jumbo frames). We haven't tried to measure our OpenBSD firewalls recently but I don't think they can move traffic this fast yet. SSH connections aren't this fast; we can count on hitting 1G wire bandwidth but generally not anywhere near close to 10G TCP bandwidth with a single SSH connection.

  • FLOSS Weekly 686: Authentic Data - David Huseby, Authentic Data

    Cryptography expert Dave Huseby tells Doc Searls and Katherine Druckman how to build infinitely scalable layer two solutions that unbind the Internet from time and space without changing existing systems. All with authentic data.

»

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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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