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today's howtos

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HowTos
  • Grub Boot Loader Full Tutorial – Linux Hint

    A boot loader is, by default, the first program that starts as soon as you turn on your computer system, i.e., it starts even before the operating system. In fact, the boot loader is responsible for loading your operating system. In the absence of a boot loader, it is technically impossible to load your operating system, hence, you will not be able to access your computer system. This program is presented to us by GNU.
    Initially, this program was developed only for Linux-based systems, however, today it supports multiple operating systems including, macOS, Windows, BSD, and Solaris. Most of the users get familiar with the Grub Boot Loader only once they install more than one operating system on their machine. By doing this, they essentially cause the Grub Boot Loader to present a menu at the boot-up time through which they can explicitly choose which operating system they want to load.

    In this article, we would like to share with you a complete tutorial on Grub Boot Loader, which will be based on customizing this program according to your choice. After going through this tutorial, you will be in a very good position to customize the Grub Boot Loader just the way you want, and hence you can make the experience of seeing the boot-up process all the more interesting.

  • Blender Knife Tool – Linux Hint

    A knife tool is used to subdivide any surface of a mesh by drawing lines. In other words, a knife tool is a modeling tool to form new edge loops and vertices. The knife tool is pretty straightforward. To select the knife tool, you must enable Edit Mode.

  • Blender Bevel Tool – Linux Hint

    In real life, no surface is perfectly sharp. Bevel helps in bringing out the detail. With bevel applied, objects look much more appealing than without bevel. This effect can be exaggerated or subtle one, it depends on the shape of the mesh and your preference. The bevel allows you to chamfer the corners and edges of a mesh. The beveled edges catch light and change shading around corners, which gives realism to the mesh.

  • An Introduction to Linux’s dmesg Command – Linux Hint

    Every operating system, including Linux, performs some activities silently without notifying the user. Although the user is unaware of these activities, it may be necessary to check these activities to identify operating system issues and the devices attached to the computer system.
    Luckily, for the Linux operating system, all these activities are logged in the ring buffer, which can be accessed by using the diagnostic messages (or dmesg) command. The dmesg command in Linux can be used to display all the messages related to the events taking place within your operating system. This article will teach you how to use this helpful command in Linux.

  • How to Setup Raspberry Pi Bluetooth – Linux Hint

    Bluetooth is a very popular communication protocol for short-distance wireless communication. There are many Bluetooth devices such as keyboards, mouses, headphones, speakers, etc. that you can connect to your Raspberry Pi using Bluetooth. If you need to transfer small files between your Raspberry Pi and another device like a laptop, or a smartphone, Bluetooth can also come in handy.
    In this article, I am going to show you how to setup Bluetooth devices on your Raspberry Pi running the Raspberry Pi OS. So, let’s get started.

  • Killing frozen applications in Ubuntu – Linux Hint

    Sometimes, the applications running on your system freeze and stop responding. A frozen application cannot be closed by simply using the x button in the upper-right corner of the interface, but rebooting the system is not always a good solution—especially if the system is running critical services.
    In Ubuntu, there are several methods that can be used to kill frozen applications safely and quickly without rebooting your system: xkill, system monitor utilities, and the commands kill, pkill, and killall. In this article, we will discuss these methods on a machine running Ubuntu 20.04 LTS (Focal Fossa).

  • How do I Upgrade Ubuntu from the Terminal? – Linux Hint

    If you are a computer enthusiast, you might have experience working with multiple operating systems. For a given operating system, it is good to use the latest release for several reasons. First, the latest release includes the latest software upgrades, which will protect you from potential bugs. Second, newer versions tend to be more secure than older versions. In this article, we will teach you how to upgrade Ubuntu from the Linux terminal. Note that, in this article, we use Ubuntu 20.04 LTS.

  • Amazing Useful Raspberry Pi Commands Cheat Sheet | Itsubuntu.com

    Amazing Useful Raspberry Pi Commands Cheat Sheet

    Let’s have a look into the some of the useful Raspberry Pi commands cheat sheet.

More in Tux Machines

New Releases: EasyOS 2.5.1 and NuTyX 12-rc3

  • Easy Buster version 2.5.1

    EasyOS versions 1.x are the "Pyro" series, the latest is 1.3. Easy Pyro is built with packages compiled from source using 'oe-qky-src', a fork of OpenEmbedded. Consequently, the builds are small and streamlined and integrated. The Pyro series may have future releases, but it is considered to be in maintenance status. The "Buster" series start from version 2.0, and are intended to be where most of the action is, ongoing. Version 2.0 was really a beta-quality build, to allow the testers to report back. The first official release was 2.1. The main feature of Easy Buster is that it is built from Debian 10 Buster DEBs, using WoofQ (a fork of Woof2: Woof-CE is another fork, used to build Puppy Linux).

  • EasyOS 2.5.1
  • EasyPup 2.5 boots, 2.5.1 kernel panic

    Rodney has been reporting this for sometime, that he gets a kernel panic trying to boot recent releases of EasyOS or EasyPup. They are using a 5.4.x kernel, except for EasyPup 2.5, I used a 4.19.157 kernel, and that booted. He tried to upgrade to 2.5.1, got kernel panic. So, he is back on 2.5.

  • NuTyX 12-rc3 available

    I'm very please to announce the new NuTyX 12-rc3 testing release. The 64-bit version is a complete new project. They are no plan to release a version 12 of NuTyX in 32 bits.

Devices/Embedded: Raspberry Pi, Jetson Nano and STMicroelectronics/FreeRTOS

  • World’s first fingerprint sensor HAT uses capacitive scanning

    SB Components has won Kickstarter funding for a $60 “PiFinger” HAT for the Raspberry Pi featuring a 2D capacitive fingerprint sensor with 176 x 176 resolution that can detect, compare and register up to 24 fingerprints. UK-based SB Components, which has delivered ambitious, Raspberry Pi based products such as its PiTalk phone, LapPi laptop, and PiArm robotic arm, has weighed in with what it calls the world’s first fingerprint sensor HAT. The open source, $60 PiFinger has won Kickstarter funding and will ship in February.

  • 5 Best Raspberry Pi Alternatives to Run Linux On – buying guide [Ed: This list itself might be OK, but all the links are referrer spam and should be disregarded]
  • Spread the joy of learning through making
  • Designing the Raspberry Pi Case Fan
  • Compact Jetson Xavier NX/ Nano open hardware baseboard supports Android

    When it comes to NVIDIA Jetson family of modules, we should understand that NVIDIA Jetson Nano is for makers and STEM education, while Xavier NX is more geared towards professional and commercial use. The compute module Xavier NX was announced before the development kit, which includes the module and reference carrier board and otherwise for NVIDIA Jetson Nano. There are some third-party carrier boards & edge computers available for Jetson Xavier NX and Jetson Nano, including DesignCore Carrier Board and Diamond FLOYD Carrier Board. Antmicro, a custom hardware, software, and AI engineering company, came up with a compact open hardware device: Jetson Nano/ Xavier NX baseboard. It supports both NVIDIA Jetson Nano SoM as well as the Xavier NX SoM.

  • ST adds FreeRTOS thread-aware debug for microcontrollers

    STMicroelectronics has added support for FreeRTOS thread-aware debug to its STM32CubeIDE development environment, completing its acquisition of the Atollic tools. ST has completed transferring major advanced features of Atollic TrueStudio for STM32 into STM32CubeIDE after acquiring Atollic in 2017. STM32CubeIDE with support for thread-aware debug of the open source FreeRTOS real time operating system further extends the tool’s features. FreeRTOS is now supported by Amazon as AmazonFreeRTOS for the AWS cloud service. The direct access to STM32CubeMX configuration functions simplifies project setup, selecting a target microcontroller from the complete STM32 portfolio, configuring GPIOs, clock tree, peripherals, and pin assignments. The tool allows developers to quickly analyse power consumption depending on the applications usage, as well as select middleware stacks and generate initialization code for the desired configuration.

Open Hardware: Arduino and 64-bit RISC-V

  • Arduino Blog » RobotSculptor uses a six-axis robot arm to sculpt clay models

    Robotic fabrication techniques such as 3D printing enable you to make a copy of a wide variety of items. Actually sculpting something out of clay, however, remains a largely human pursuit. One might also miss the individual style of a sculptor in a finished product. RobotSculptor, developed by a team of engineers from ETH Zurich and Disney Research, attempts to address both challenges. The system generates toolpaths from a base mesh design and allows artistic input via mouse strokes during the process. A six-axis robot arm then incrementally removes clay from the model-in-progress, using a custom loop tool.

  • 64-bit RISC-V core claims 10x better CoreMarks/Watt compared to other 3-5GHz CPUs

    Micro Magic unveiled an up to 64-bit RISC-V core showing a groundbreaking 110,000 CoreMarks/Watt, with a 3GHz chip consuming less than 70mW. The company claims 10 times better CoreMarks/Watt compared to other processors in the 3-5GHz range. Considering the spectacular promise and sudden demise of AI tech firm Magic AI, we should perhaps be wary of hyped up companies with Magic in their name. Yet, the astonishing claims about an incredibly efficient RISC-V core coming out of Sunnyvale, Calif. based EDA firm Micro Magic in recent weeks appear to be for real.

  • Arduino Blog » A (very) short guide to help you transition to the Arduino Science Journal

    Arduino acquired the Science Journal app from Google on August 5th, and the final handover takes place on December 11th, 2020. From that date, the Science Journal will no longer be supported by Google. If you haven’t exported your experiments and imported them into the Arduino Science Journal, we strongly encourage you to do so now, as your data will no longer sync with Google Science Journal after that date. [...] While we can’t disclose too much about our future plans for the app, we can tell you that we’ll ensure it will offer easy access to a stream of data that leverages your smartphone sensors, as well as Arduino sensors. The aim is to help learners understand the importance of an inquiry-based educational method rather than passive consumption of information. We’ll also continuously improve the accessibility of the app for all users, and find new ways of experimenting with science. In the near future, we’ll be interacting more with users, so you’ll hear more from us soon! We’ll also be adding more tutorials on our platform dedicated to Science Journal!

Mozilla: WebThings Gateway 1.0, Lobbying and Rust

  • Flying the Nest: WebThings Gateway 1.0 - Mozilla Hacks - the Web developer blog

    After four years of incubation at Mozilla, we are excited to announce the release of WebThings Gateway 1.0 and a new home for the WebThings platform.

  • Mozilla reacts to publication of the EU Democracy Action Plan - Open Policy & Advocacy

    The European Commission has just published its new EU Democracy Action Plan (EDAP). This is an important step forward in the efforts to better protect democracy in the digital age, and we’re happy to see the Commission take onboard many of our recommendations. [...] As a founding signatory to the EU Code of Practice on Disinformation we are encouraged that the Commission has adopted many of our recommendations for how the Code can be enhanced, particularly with respect to its implementation and its role within a more general EU policy approach to platform responsibility.

  • This Week in Rust 367
  • Philip Chimento: Advent of Rust

    I have a bit of time off and I decided to participate in Advent of Code 2020 after my coworker Adrián shared a link to it. I’ve heard that people use challenges like these as an excuse to learn a new programming language, and I have wanted to learn Rust for quite a long time now. Why Rust? From what I’ve heard, it’s a programming language oriented towards high performance and systems programming, like C or C++; but unlike those languages, it was designed in such a way to make it difficult or impossible to make mistakes such as buffer overflows or memory leaks. I have heard that it’s a lot more enjoyable to use than C++ as well. I did write a “Hello World” program in Rust some time ago, and I have heard things about Rust from others, so I wouldn’t be coming to it completely fresh. Nonetheless, fresh enough that I decided that the experience of writing something from scratch, in a new programming language, was unusual enough for me that I would keep a log while I was doing it. So here is that log. It’s a bit stream-of-consciousness. I’ve edited it so that it consists of complete sentences instead of just notes, but I’ve left in the mistakes and dead ends. I made this mainly so that I can look back later when I’ve learned more, and see what mistakes I made.