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today's leftovers

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  • Announcing the availability of two openSUSE mirrors in Mauritius

    I was invited to speak at the event and I chose to explain a little about openSUSE, its different distributions and how we have managed to set up two mirrors to improve the performance of openSUSE updates in Mauritius.

    Girish is a representative for OSCA Mauritius and he works at OceanDBA. He put all the effort into organising this event. At about 09h30, the conference room at Flying Dodo was almost full. Girish welcomed everyone and introduced the presentation themes for the day.

  • Rubenerd: Superficial Linux distribution reviews

    Google’s search results for software projects, technical announcements, and questions have steadily been reduced to a mountain of spam and duplicate content wrapped with ads. The remaining original material also tends to be hastily produced, with only a superficial exploration and grasp of the topic they discuss before moving onto the next thing.


    These define the ethos and practical applications of a distribution, and get to the interesting questions and points of difference people care about.

    I don’t mean to criticise everyone here. For every churn factory producing low-quality clickbait (the Linux equivalent of those 5 Minute Craft lifehack videos), there are others who are breaking into the space and wanting to share their journey. We should encourage this! I just think with only minor tweaks and a few additional ideas, this content could be way more useful.

    We need more authentic voices if we’re ever going to be heard over spammers.

  • RapidDisk Tutorial – Episode 2: NVMe Target Exporting – Random [Tech] Stuff

    RapidDisk is an advanced Linux RAM Disk which consists of a collection of modules and an administration tool. Features include: Dynamically allocate RAM as block device. Use them as stand alone disk drives or even map them as caching nodes to slower local disk drives. Access those drives locally or export those volumes across an NVMe Target network.

  • The SDDM Login Manager Has So Many Amazing Themes - Invidious

    Over the years, I've tried out a few different login managers for Linux. But recently, I have switched over to using SDDM mainly due to its choice of so many gorgeous themes. And it's easy to customize the themes to your liking!

  • Will v8 Isolates Coexist With Containers?

    Long term, will v8 Isolates become the basis of a generalized computing platform, or will containers (or some other type of software container)? Or will there continue to be separate infrastructure, application, and edge runtimes?
    The isolation technologies are complementary today – they make different trade-offs with cold starts, security boundaries, and resource profiles. You'll find v8 Isolates powering edge functions like Cloudflare Workers (but not Lambda@Edge). However, there are many public and private companies working to make isolates more generalized – hardening the security boundary, improving the cold starts, and expanding the supported languages (through WebAssembly).

More in Tux Machines

today's howtos

  • How to Change Comment Color in Vim – Fix Unreadable Blue Color

    Are you annoyed about the comment color in vim? The dark blue color of the comment is often hard to read. In this tutorial, we learn how to change the comment color in Vim. There are few methods we can use to look vim comment very readable.

  • How to Add Repository to Debian

    APT checks the health of all the packages, and dependencies of the package before installing it. APT fetches packages from one or more repositories. A repository (package source) is basically a network server. The term "package" refers to an individual file with a .deb extension that contains either all or part of an application. The normal installation comes with default repositories configured, but these contain only a few packages out of an ocean of free software available. In this tutorial, we learn how to add the package repository to Debian.

  • Making a Video of a Single Window

    I recently wanted to send someone a video of a program doing some interesting things in a single X11 window. Recording the whole desktop is easy (some readers may remember my post on Aeschylus which does just that) but it will include irrelevant (and possibly unwanted) parts of the screen, leading to unnecessarily large files. I couldn't immediately find a tool which did what I wanted on OpenBSD [1] but through a combination of xwininfo, FFmpeg, and hk I was able to put together exactly what I needed in short order. Even better, I was able to easily post-process the video to shrink its file size, speed it up, and contort it to the dimension requirements of various platforms. Here's a video straight out of the little script I put together: [...]

  • Things You Can And Can’t Do

    And it got me thinking about what you can and can’t do — what you do and don’t have control over.

  • allow-new-zones in BIND 9.16 on CentOS 8 Stream under SELinux

    We run these training systems with SELinux enabled (I wouldn’t, but my colleague likes it :-), and that’s the reason I aborted the lab: I couldn’t tell students how to solve the cause other than by disabling SELinux entirely, but there wasn’t enough time for that.

  • Will the IndieWeb Ever Become Mainstream?

    This is an interesting question, thanks for asking it, Jeremy. I do have some history with the IndieWeb, and some opinions, so let’s dive in.

    The short answer to the question is a resounding no, and it all boils down to the fact that the IndieWeb is really complicated to implement, so it will only ever appeal to developers.

  • How to Install CUPS Print Server on Ubuntu 22.04

    If your business has multiple personal computers in the network which need to print, then we need a device called a print server. Print server act intermediate between PC and printers which accept print jobs from PC and send them to respective printers. CUPS is the primary mechanism in the Unix-like operating system for printing and print services. It can allow a computer to act as a Print server. In this tutorial, we learn how to set up CUPS print server on Ubuntu 22.04.

Open Hardware: XON/XOFF and Raspberry Pi Pico

  • From XON/XOFF to Forward Incremental Search

    In the olden days of computing, software flow control with control codes XON and XOFF was a necessary feature that dumb terminals needed to support. When a terminal received more data than it could display, there needed to be a way for the terminal to tell the remote host to pause sending more data. The control code 19 was chosen for this. The control code 17 was chosen to tell the remote host to resume transmission of data.

  • Raspberry Pi Pico Used in Plug and Play System Monitor | Tom's Hardware

    Dmytro Panin is at it again, creating a teeny system monitor for his MacBook from scratch with help from our favorite microcontroller, the Raspberry Pi Pico. This plug-and-play system monitor (opens in new tab) lets him keep a close eye on resource usage without having to close any windows or launch any third-party programs. The device is Pico-powered and plugs right into the MacBook to function. It has a display screen that showcases a custom GUI featuring four bar graphs that update in real-time to show the performance of different components, including the CPU, GPU, memory, and SSD usage. It makes it possible to see how hard your PC is running at a glance.

Security Leftovers

How to Apply Accent Colour in Ubuntu Desktop

A step-by-step tutorial on how to apply accent colour in Ubuntu desktop (GNOME) with tips for Kubuntu and others. Read more