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today's howtos

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HowTos
  • How To Enable Virtual Emulated Desktop On Proton Steam On Ubuntu Linux! - Fosslicious

    Proton is an application released by Valve that is used to run Windows Operating System Games on Linux. We can install this application via Steam.

    To see a list of games that can be run on Proton, please visit ProtonDB. There are also some discussions posted by users regarding problems when running games using Proton.

    Proton was developed from Wine. So, some features of Wine can be used in this application. One of them is Virtual Emulated Desktop.

  • How To Install Snap on Linux Mint 20 - idroot

    In this tutorial, we will show you how to install Snap on Linux Mint 20. For those of you who didn’t know, Snap is a package management system for installing and managing applications (called Snaps) developed by Cananoical for Linux operating systems. The system is designed to work for the internet of things, cloud and desktop computing.

    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 Snap on a Linux Mint 20 (Ulyana).

  • Install Docker and Portainer - blackMORE Ops

    Docker is a set of platform as a service (PaaS) products that use OS-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels. Because all of the containers share the services of a single operating system kernel, they use fewer resources than virtual machines. The service has both free and premium tiers. The software that hosts the containers is called Docker Engine.

    Portainer CE is a lightweight ‘universal’ management GUI that can be used to easily manage Docker, Swarm, Kubernetes and ACI environments. It is designed to be as simple to deploy as it is to use. Portainer consists of a single container that can run on any cluster. It can be deployed as a Linux container or a Windows native container. Portainer allows you to manage all your orchestrator resources (containers, images, volumes, networks and more) through a super-simple graphical interface. A fully supported version of Portainer is available for business use.

  • Learn Usage of chown (Change Ownership) Command in Linux

    Under Linux, the ownership of created or existing files and directories is associated with a specific Linux system user, group, or other (file/directory permission access types).

    However, files or directories ownership verdicts are not final as it is possible to chown (Change Ownership) of any file and/or directory within the Linux operating system.

  • Learn Usage of chgrp (Change Group) Command in Linux

    If you are reading this article on the chgrp command, there is a high chance you have explored all the depths of Linux’s chown command and chmod command.

  • Linux Essentials: Background (bg) and Foreground (fg) - Invidious

    In this episode of Linux Essentials, we'll take a look at how to send tasks to the background, and then bring them to the foreground.

More in Tux Machines

today's leftovers

  • Why Do Windows Users Think Linux Users Are Weird - Invidious

    Linux is such a radically different operating system than the proprietary operating systems like Microsoft Windows. Because of this, Linux tends to attract a different kind of user than Windows.

  • How to install Sublime Text on Elementary OS 6.0 - Invidious

    In this video, we are looking at how to install Sublime Text on Elementary OS 6.0.

  • SGX Deprecation Prevents PC Playback of 4K Blu-ray Discs

    This week Techspot reported that DRM-laden Ultra HD Blu-ray Discs won’t play anymore on computers using the latest Intel Core processors. You may have skimmed right past it, but the table on page 51 of the latest 12th Generation Intel Core Processor data sheet (184 page PDF) informs us that the Intel Software Guard Extensions (SGX) have been deprecated. These extensions are required for DRM processing on these discs, hence the problem. The SGX extensions were introduced with the sixth generation of Intel Core Skylake processors in 2015, the same year as Ultra HD Blu-ray, aka 4K Blu-ray. But there have been numerous vulnerabilities discovered in the intervening years. Not only Intel, but AMD has had similar issues as we wrote about in October.

  • PostgreSQL: pgDay Paris 2022 — Schedule published

    The next edition of the popular PostgreSQL conference pgDay Paris, a PostgreSQL.Org Recognized Community Conference, will be held on March 24, 2022 in the French capital. All of the talks will be in English. Registration is open, and the EARLYBIRD discount is going fast so make sure you grab that while you can!

  • WordPress 5.9 RC3

    The third Release Candidate (RC3) for WordPress 5.9 is here! Thank you to everyone who has contributed thus far toward testing and filing bugs to help make WordPress 5.9 a great release. WordPress 5.9 is slated to land in just one week—on January 25, 2022. You still have time to help! Since RC2 arrived last week, testers have found and fixed two bugs, 14 fixes from Gutenberg. There has been one additional Gutenberg fix today.

Proprietary Traps: AD, AV1 Patent Pools, More Outsourcing to Microsoft

  • Overcoming A Common Admin Black Hole: Linux Management [Ed: Shilling Microsoft's proprietary junk (AD) and then alleging Linux has a "black hole"]

    I’ll admit that we never “got there” from a governance standpoint with those Linux devices; a silo was predestined because we were built around Active Directory domain controllers that shunned Linux devices.

  • Firefox Gets AV1 VA-API Acceleration Sorted Out

    Thanks to Red Hat developer Martin Stránský, he has managed to get the Video Acceleration API (VA-API) working for AV1 content within the Firefox web browser. After working on it the past month, the necessary bits have come together for supporting AV1 VA-API playback within Firefox on Linux. See the Mozilla.org BugZilla for tracking the progress on the effort. The latest AV1 activity in general for Mozilla can be tracked via hg.mozilla.org.

  • Hacks.Mozilla.Org: Contributing to MDN: Meet the Contributors [Ed: Mozilla outsourced again to Microsoft and its proprietary software; Mozilla became worthless; it'll be history in a few years due to bad leadership]

    If you’ve ever built anything with web technologies, you’re probably familiar with MDN Web Docs. With about 13,000 pages documenting how to use programming languages such as HTML, CSS and JavaScript, the site has about 8,000 people using it at any given moment. MDN relies on contributors to help maintain its ever-expanding and up to date documentation. Supported by companies such as Open Web Docs, Google, w3c, Microsoft, Samsung and Igalia (to name a few), contributions also come from community members. These contributions take many different forms, from fixing issues to contributing code to helping newcomers and localizing content. We reached out to 4 long-time community contributors to talk about how and why they started contributing, why they kept going, and ask what advice they have for new contributors. [...] Since the end of 2020, the translation of MDN articles happen on the new GitHub based platform. [...] Our seasoned contributors suggest starting with reporting issues and trying to fix them, follow the issue trackers and getting familiarized with GitHub.

Hardware: EInk Phone, Arduino, and More

  • Bryan Quigley: Small EInk Phone

    To be shipped with one of the main Linux phone OSes (Manjaro with KDE Plasma, etc).

  • A DIY CAD Mouse You Can Actually Build

    When you spend a lot of time on the computer doing certain more specialised tasks (no, we’re not talking about browsing cat memes on twitter) you start to think that your basic trackpad or mouse is, let’s say, lacking a certain something. We think that something may be called ‘usability’ or maybe ease-of-use? Any which way, lots of heavy CAD users gush over their favourite mouse stand-ins, and one particularly interesting class of input devices is the Space Mouse, which is essentially patented up-to-the-hilt and available only from 3DConnexion. But what about open source alternatives you can build yourselves? Enter stage left, the Orbion created by [FaqT0tum.] This simple little build combines an analog joystick with a rotary knob, with a rear button and OLED display on the front completing the user interface.

  • KiCAD 6.0: What Made It And What Didn’t | Hackaday

    I’ve been following the development of KiCAD for a number of years now, and using it as my main electronics CAD package daily for a the last six years or thereabouts, so the release of KiCAD 6.0 is quite exciting to an electronics nerd like me. The release date had been pushed out a bit, as this is such a huge update, and has taken a little longer than anticipated. But, it was finally tagged and pushed out to distribution on Christmas day, with some much deserved fanfare in the usual places. So now is a good time to look at which features are new in KiCAD 6.0 — actually 6.0.1 is the current release at time of writing due to some bugfixes — and which features originally planned for 6.0 are now being postponed to the 7.0 roadmap and beyond.

Programming Leftovers

  • C: sigprocmask Function Usage

    You may have heard about socket programming in C. One of the socket functions is the “sigprocmask” function. This function has been usually utilized in the code to inspect or alter the signal mask of the calling function. The signal mask is a term used for a group of signals that are presently blocked and cannot be conveyed for the calling function. Such kind of signal is known as “Blocked Signals.” You can say that a process can still receive the blocked signals, but it will not be used until they are unblocked and released, i.e., raised. Until then, it will be pending. Therefore, within today’s guide, we will be discussing the use of the sigprocmask function in C programming. Let’s have a start. After the Ubuntu 20.04 successful login, you need to launch the shell of the Ubuntu 20.04 system first after the login. So, try out the “Ctrl+Alt+T” shortcut simply on the desktop screen. It will launch the terminal shell for you in some seconds. Make sure to update your system using the apt package of your system. After that, you have to execute the “touch” instruction along with the file name you want to generate, i.e., to create the C file via the shell. This newly created file can be found in the “home” folder of your system’s file explorer. You can try opening it with the “text” editor to create code in it. Another way to open it in the shell is using the “GNU Nano” editor using the “nano” keyword with a file name as demonstrated beneath.

  • C: sigaction function usage

    A sigaction() is a function that allows to call/observe or examine a specific action associated with a particular signal. It is thought to consider a signal and sigaction function on the same page. But in reality, it has not occurred. The signal() function does not block other signals when the current handler’s execution is under process. At the same time, the sigaction function can block other signals until the current handler has returned.

  • delegation of authority from the systems programming perspective – Ariadne's Space

    As I have been griping on Twitter lately, about how I dislike the design of modern UNIX operating systems, an interesting conversation about object capabilities came up with the author of musl-libc. This conversation caused me to realize that systems programmers don’t really have a understanding of object capabilities, and how they can be used to achieve environments that are aligned with the principle of least authority. In general, I think this is largely because we’ve failed to effectively disseminate the research output in this area to the software engineering community at large — for various reasons, people complete their distributed systems degrees and go to work in decentralized finance, as unfortunately, Coinbase pays better. An unfortunate reality is that the security properties guaranteed by Web3 platforms are built around object capabilities, by necessity – the output of a transaction, which then gets consumed for another transaction, is a form of object capability. And while Web3 is largely a planet-incinerating Ponzi scheme run by grifters, object capabilities are a useful concept for building practical security into real-world systems. Most literature on this topic try to describe these concepts in the framing of, say, driving a car: by default, nobody has permission to drive a given car, so it is compliant with the principle of least authority, meanwhile the car’s key can interface with the ignition, and allow the car to be driven. In this example, the car’s key is an object capability: it is an opaque object, that can be used to acquire the right to drive the car. Afterwards, they usually go on to describe the various aspects of their system without actually discussing why anybody would want this.

  • Pip Install: Install and Remove Python Packages
  • A dog-cat-horse-turtle problem

    Sometimes the text-processing problems posted on Stack Exchange have so many solutions, it's hard to decide which is best. A problem like that was posted in the "Unix & Linux" section in December 2021...