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today's leftovers

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Misc

  • Portable Computer Pre-History: Portable Before Laptops

    Portability is relative. When former Texas Instruments employees Rod Canion, Jim Harris and Bill Murto created a portable version of the IBM PC in 1982, it was a hulking device that weight 28 pounds and was roughly the size of a sewing machine. If you sold a desktop computer that weighed 28 pounds in 2018, you’d be laughed off the block. But the device, called the Compaq Portable, was revolutionary for its time and thrust the company that made it into the mainstream. It wasn’t too long before then that a portable computer was so embarrassingly large that you would probably break your legs if you used it as a laptop. Tonight’s Tedium ponders a time when portable computing meant something just a little bit bigger.

  • Fedora Sway OSTree Spin name

    The Fedora Sway SIG is working to create an immutable version of the Sway Spin (also work in progress) using OSTree.

    Those immutable spins of Fedora are becoming more common following Silverblue and Kinoite’s success.

    As it often happens, one of the most challenging things to do in creating something is to come up with clever names. This task is made even more complex by the relatively small amount of people active in this conversation. For this reason, during the last SIG meeting, it was decided to socialize this decision so that more people could suggest their ideas.

  • Output requirements.txt packages pinned to latest version
  • How to install OpenSCAD on a Chromebook

    Today we are looking at how to install OpenSCAD on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.

  • Stupid SMP Tricks: A Review of Locking Engineering Principles and Hierarchy: paulmck — LiveJournal

    Daniel Vetter put together a pair of intriguing blog posts entitled Locking Engineering Principles and Locking Engineering Hierarchy. These appear to be an attempt to establish a set of GPU-wide or perhaps even driver-tree-wide concurrency coding conventions.

    Which would normally be none of my business. After all, to establish such conventions, Daniel needs to negotiate with the driver subsystem's developers and maintainers, and I am neither. Except that he did call me out on Twitter on this topic. So here I am, as promised, offering color commentary and the occasional suggestion for improvement, both of Daniel's proposal and of the kernel itself. The following sections review his two posts, and then summarize and amplify suggestions for improvement.

  • Ubuntu Unity 22.04 Quick overview #linux #UbuntuUnity - Invidious
  • FOSS Force Open Source News Quiz (8/12/22) - FOSS Force

    How closely did you follow the news about Linux and free and open source software this week? You can get an idea about how well informed you are (and have some fun in the process) by taking our Open Source News Quiz. Once you’re done, scroll down to the comments section and let us know how you did!

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