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Monday, 09 Dec 19 - Tux Machines is a community-driven public service/news site which has been around for over a decade and a half and primarily focuses on GNU/LinuxSubscribe now Syndicate content

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today's leftovers

Filed under
Misc
  • SUSE Linux Enterprise 12 Service Pack 5 is Generally Available

    As you know, SUSE Linux Enterprise service packs are released on a yearly cadence. Service Pack 5 is the next service pack since the release of Service Pack 4 in Dec 2018. In addition, Service Pack 5 is also the last service pack for SUSE Linux Enterprise 12 release. With the release of SUSE Linux Enterprise 12 Service Pack 5 on December 9th, general support for SUSE Linux Enterprise 12 Service Pack 4 will end on June 30th, 2020. Customers wishing to maintain support of their SUSE Linux Enterprise 12 Service Pack 4 installations after June 30, 2020 can continue support through the purchase of Long Term Service Pack Support.

    [...]

    If you are currently running SUSE Linux Enterprise 12 SP4, you can migrate to Service Pack 5 as part of your active subscription until June 30, 2020.

  • Developing Leaderboard for GNOME Hackers

    After completing my Google Summer of Code assignment, I had an idea in my mind for a project where the hard-working people on GNOME, known as GNOME Hackers, could be appreciated based on the amount of work they do for the FLOSS community. In the quest for the same, I wrote a leaderboard web app, GNOME Hackers. It was an awesome experience and I utilized my weekends very well by learning many new things. I will give a brief of them below.

  • Counting down the days using bash

    Need to know how many days there are before some important event? Let Linux bash and the date command help with that!

  • How to Boost Your Programming Skills

    Anyone with an old computer that they don't use anymore should install Ubuntu on it in order to improve their programming skills. It's a free Linux-based operating system that can run on a wide range of hardware. Successfully using Ubuntu will require you to learn more about Python, which is considered one of the most simplified and beginner-friendly programming languages in use today. - Bryce Welker, The Big 4 Accounting Firms

  • Canonical sponsors WSLConf at Microsoft HQ [Ed: Mark Shuttleworth donates money to Microsoft's attacks on GNU/Linux]

    Canonical is announcing today it will be a featured sponsor of WSLConf, the first conference dedicated to the Windows Subsystem for Linux (WSL) platform. WSLConf is scheduled for March 10th-11th, 2020 and is being held on the campus of Microsoft’s headquarters in Redmond, Washington. The conference brings together developers, start-up founders, academics, enterprise, community members, and teams from Microsoft and Canonical around Windows Subsystem for Linux. The conference will include two densely-packed days of presentations and workshops on the latest developments on the rapidly evolving platform.

  • Mozilla Addons Blog: Secure your addons.mozilla.org account with two-factor authentication

    Accounts on addons.mozilla.org (AMO) are integrated with Firefox Accounts, which lets you manage multiple Mozilla services from one login. To prevent unauthorized people from accessing your account, even if they obtain your password, we strongly recommend that you enable two-factor authentication (2FA). 2FA adds an extra layer of security to your account by adding an additional step to the login process to prove you are who you say you are.

    When logging in with 2FA enabled, you will be asked to provide a verification code from an authentication application, in addition to your user name and password. This article on support.mozilla.org includes a list of supported authenticator applications.

    Starting in early 2020, extension developers will be required to have 2FA enabled on AMO. This is intended to help prevent malicious actors from taking control of legitimate add-ons and their users. 2FA will not be required for submissions that use AMO’s upload API.

    Before this requirement goes into effect, we’ll be working closely with the Firefox Accounts team to make sure the 2FA setup and login experience on AMO is as smooth as possible. Once this requirement goes into effect, developers will be prompted to enable 2FA when making changes to their add-ons.

  • Embracing digital transformation with containerisation and Kubernetes

    While digital transformation is creating new business opportunities, it is also bringing a host of challenges and technological barriers with its wave of progress. With changes ongoing and always around the corner, organisations are having to re-evaluate how they can modernise their often-out-dated digital infrastructure in order to keep up. Is there any way to make the transition simpler?

    Enter Kubernetes. The word is taken from ancient Greek, where it translates as ‘helmsman’ or ‘pilot’. So, it makes sense that your IT business strategy can be guided, not through the Aegean, but through the waters of digital transformation towards stability and efficiency. What began life as Google’s original open source container-orchestration system, has now paved the way for a reliable precedent to automating, controlling and extending modern IT applications.

  • Datacenters Are Hungry For Servers Again

    Server consumption is a pretty good proxy for how enterprises of all shapes and sizes feel about their particular business. And judging by the number of machines and the aggregate revenue they drove in the third quarter – despite all of the uncertainty in the world – they must be feeling pretty good.

Devices: Btlejack, I2C, Congatec

Filed under
GNU
Linux
Hardware
  • Sniff, jam and hijack Bluetooth Low Energy devices with Btlejack

    Bluetooth Low Energy Swiss-army knife or Btlejack is a small software client designed to be used with the BBC Micro:Bit mini PC and can be used with one or more devices running a dedicated firmware. Once installed you will be able to sniff, jam and hijack Bluetooth Low Energy devices. Current version of this tool (2.0) supports BLE 4.x and 5.x.

    “Btlejack relies on one or more BBC Micro:Bit. devices running a dedicated firmware. You may also want to use an Adafruit’s Bluefruit LE sniffer or a nRF51822 Eval Kit, as we added support for these devices. The BLE 5.x support is limited, as it does only support the 1Mbps Uncoded PHY and does not support channel map updates.”

    “You need a UNIX based system (for example a Raspberry Pi). If you use the BBC Micro:Bit, you will need one to three Micro:Bit devices (three devices recommended) and for each device one free USB port. The power consumption of a Micro:Bit is rather low, so you can use a single USB port and a passive hub for powering the three recommended units.”

  • I2CMini is tiny USB to I2C Bridge for your PC or SBC (Crowdfunding)

    Last year, we wrote about Excamera Labs SPIDriver tool to control and monitor SPI devices from your computer, but this year the company launched another similar product for I2C: I2CDriver.

  • Congatec Conga-SMX8-Nano SMARC 2.0 CoM Features NXP i.MX 8M Nano Processor

    Congatec Announces Ultra-Low-Power SMARC 2.0 CoM Congatec has come out with a new CoM, the Conga-SMX8-Nano that carries up to 4x ARM Cortex-A53 and 1x Cortex-M7 cores with a full spectrum of options...

China orders officials to remove foreign tech from computers

Filed under
GNU
Linux
Microsoft

China began building its own operating system to replace Microsoft Windows or iOS in 2013, with the help of a British company Canonical.

Canonical was founded by South African entrepreneur Mark Shuttleworth to market commercial support and related services for Ubuntu, a Linux-based operating system which is open-source and not owned by an individual or company.

Canonical provided technical support to build Chinese users an Ubuntu open-source operating system named Kylin, at the request of the Chinese Ministry of Industry and Information Technology.

Earlier this year the US banned American companies from doing business with Chinese telecommunications company Huawei. Google, Intel and Qualcomm stopped working with the technology company.

Prime Minister Boris Johnson hinted that the future of Chinese technology companies in the UK could be on the line after vowing not to involve Huawei in upcoming 5G networks if it would create a rift with security allies like the US.

Read more

Free Software program Basis Provides Advantages and Merchandise In Its Annual Fundraiser

Filed under
GNU

An nameless reader writes:
The Free Software program Basis is holding its annual fundraiser, with a aim of attracting 600 new members by the tip of December. (New members to date: 112.) “We’re nonetheless combating the oppressive nature of proprietary software program,” explains the marketing campaign’s net web page. “Now we have made strong inroads, and the neighborhood is as passionate as ever.”

As a 501(c)(3) charity the group’s membership dues are all tax deductible, and affiliate memberships are simply $10 a month ($5 for college kids). They arrive with particular advantages together with as much as 5 electronic mail aliases within the member.fsf.org area, eligibility to hitch the nonprofit Digital Credit score Union, free admission to the annual LibrePlanet convention in Boston, and 20% reductions on FSF merchandise and GNU gear (together with this pleasant stuffed child gnu).

Read more

Also: Mark J. Wielaard: Software Freedom Conservancy Donor Match

Python Programming: Python 3, MicroPython, Creating Command Line Utilities and Installing/Updating Packages in Python

Filed under
Development
  • It’s Time to Upgrade to Python 3 – Time Is Running Out!

    As of January 1, 2020, Anaconda will no longer be adding new packages built for Python 2.7 to repo.anaconda.com default channels. The Python 2.7 packages available prior to that date will remain available.

    This means, for instance, that if there is a newly released version of TensorFlow after the first of the new year – it will not be available in defaults for Python 2.7.

    The one exception is that Python 2.7.18 is slated to be released in mid-April 2020 according to PEP-0373. Packages for Python 2.7.18 will be built and made available on the repo.anaconda.com defaults channel.

  • MicroPython: An Intro to Programming Hardware in Python

    Are you interested in the Internet of Things, home automation, and connected devices? Have you ever wondered what it would be like to build a blaster, a laser sword, or even your own robot? If so, then you’re in luck! MicroPython can help you do all of those things and more.

    [...]

    Python’s popularity has skyrocketed in recent years. These days, it’s used everywhere from DevOps to statistical analysis, and even in desktop software. But for a long time, there was one field where Python use was conspicuously missing. Developers working with microcontrollers had not yet adopted the language.

    All of that changed in 2013 when Damien George launched a Kickstarter campaign. Damien, an undergraduate at Cambridge University, was an avid robot programmer. He wanted to move the Python world from machines that worked with capacities in the gigabytes down to the kilobytes. His Kickstarter campaign was an attempt to back his development while he turned his proof of concept into a finished implementation.

    Many developers jumped at the chance, not only to use Python on microcontrollers but also to get an early version of Damien’s own reference hardware, which was built especially for the task! In fact, by the end of the campaign, Damien had blown past his £15,000 goal. Thanks to over 1,900 backers, he reached just shy of £100,000.

  • Creating Command Line Utilities with Python's argparse

    Most of the user-facing software comes with a visually pleasing interface or via a decorated webpage. At other times, a program can be so small that it does not warrant an entire graphical user interface or web application to expose its functionality to the end-user.

    In these cases, we can build programs that are accessible via a Command Line Interface, or CLI.

    In this post, we will explore Python's argparse module and use it to build a simple command-line tool to help us shorten URLs swiftly.

  • Learn all About Installing & Updating Packages in Python

    In this tutorial, we will learn the basics of installing, working and updating packages in Python. First, we will learn how to install Python packages, then how to use them, and finally, how to update Python packages when needed. More specifically, we are going to learn how to install and upgrade packages using pip, conda, and Anaconda Navigator.

    Now, before we are going to learn how to install Python packages we are going to answer the question “what is a package in Python?”

Facebook's New Linux Slab Memory Controller Saving 30~40%+ Of Memory, Less Fragmentation

Filed under
Linux

Back in September we wrote about Facebook's Roman Gushchin working on a new slab memory controller/allocator implementation that in turn could provide better memory utilization and less slab memory usage. This wasn't ready in time for the 5.5 kernel but a revised patch series was sent out last week.

Roman continues to talk up this new slab memory controller with it turning out much better than the existing slab memory code, which he says in Facebook production workloads is only seeing 45~65% slab utilization and at best case around 85%. This controller rework aims for better slab utilization and also sharing of slab pages between multiple memory cgroups. The memory accounting is done now per-object rather than per-page, among other changes.

Read more

Also: KubeCon gets bigger, the kernel gets better, and more industry trends

Canonical's Multipass 0.9 Released For Easily Spinning Up Ubuntu VMs

Filed under
Ubuntu

Multipass, the Canonical-led open-source project that aims to make it easy to spin up Ubuntu VM instances on Linux and Windows and macOS, is up to version 0.9 ahead of a possible 1.0 release for Ubuntu 20.04 LTS.

Multipass is the Canonical-led lightweight VM manager focused on quickly and easily creating new Ubuntu instances. Multipass builds atop KVM on Linux while on Windows has Hyper-V or VirtualBox and macOS has HyperKit and VirtualBox at its disposal. Multipass is a lot like Vagrant and makes it easy to fetch the latest distribution images, quickly and easily launching new instances with a single command, and other features. In catering to Ubuntu, it's also friendly with Snaps for deployment.

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NVDA 2019.3beta1 now available for testing

Filed under
Software
Moz/FF

Beta1 of NVDA 2019.3 is now available for download and testing. For anyone who is interested in trying out what NVDA 2019.3 has to offer before it is officially released, we welcome you to download the beta and provide feedback.

NVDA 2019.3 is a very significant release as there are a great deal of under-the-hood changes which improve security and allow for some pretty cool innovations in the future. The most significant changes are the upgrade of Python 2 to Python 3, and a major re-write of NVDA’s speech subsystem.

As these changes require add-ons and custom synthesizer drivers to be re-written, we plan to make the 2019.3 beta cycle much longer than normal, so that we can ensure that add-on developers have plenty of time to upgrade and test their add-ons with NVDA 2019.3 betas before 2019.3 stable is officially released. the current plan is to release several more betas over this month, and hopefully make the official release very early in the new year.

Read more

Also: NVDA 2019.3 Beta 1 is available

Graphics: Mesa, Vulkan and PipeWire

Filed under
Graphics/Benchmarks
  • ADriConf GUI Control Panel Support For Mesa Vulkan Drivers Is Brought Up

    One of the most frequent complaints we hear from Linux gamers running open-source GPU drivers is over the lack of the hardware vendors supporting any feature-rich control panels like they do on Windows. There are many Linux driver tunables exposed by these open-source graphics drivers, but often they can only be manipulated via command-line options, environment variables, boot parameters, and other less than straight-forward means especially for recent converts from Windows and other novice Linux users. ADriConf has been doing a fairly decent job as a third-party means of helping to improve the situation and now there is talk of it supporting Vulkan driver settings.

  • Vulkan 1.1.130 Released With New Tooling Extension

    The new extension with Vulkan 1.1.130 is VK_EXT_tooling_info. The VK_EXT_tooling_info extension is for letting the Vulkan application/game/engine query what development tools are running right now. In particular, this is for tools like RenderDoc and other Vulkan profilers/debuggers. This extension will offer some uniformity and assistance to developers in debugging potential compatibility issues between Vulkan tools and other problems.

  • New graphing tool for PipeWire debugging

    PipeWire, the new and emerging open source framework that aims to greatly improve the exchange and management of audio and video streams inside a Linux system, has seen a number of improvements and bug fixes over the past year. With many developers now actively contributing to it, PipeWire is maturing quickly and is well on its way to becoming the new standard.

    At Collabora, we have been busy helping clients work with PipeWire, notably Automotive Grade Linux who have chosen to adopt PipeWire for its implementation of the low-level platform audio service, replacing previous solutions like 4A, PulseAudio and AudioManager. Assisting early adopters such as AGL has brought us to design and implement new elements within PipeWire, such as the session & policy management component WirePlumber, which George Kiagiadakis presented in October at the GStreamer Conference in Lyon.

Odio is a Classy Looking Radio Player for Linux Desktops

Filed under
Linux

If so, check out Odio (styled ‘odio’). This is a free Electron-based radio streaming app for Windows, macOS and Linux desktops.

Odio has super clean UI that is, to my eyes at least, somewhat inspired by Spotify’s desktop client (no bad thing). Plus, the app touts broad internal radio station support (over 20,000, apparently) and offers a couple of handy customisation options.

Read more

LibreCorps mentors humanitarian startups on how to run the open source way

Filed under
OSS

Free and open source software are no longer workplace taboos, at least not in the same way they were fifteen years ago. Today, distributed collaboration platforms and tools empower people around the world to contribute code, documentation, design, leadership, and other skills to open source projects. But do newcomers actually have a deep understanding of free and open source software?

If you hang around in open source communities for long enough, you realize there is more to open source than slapping a free software license on a project and throwing it over an imaginary fence to wait for contributors who never come. To address this problem in the humanitarian sector, the LibreCorps program, led by Rochester Institute of Technology's FOSS initiative at the Center for Media, Arts, Interaction & Creativity (MAGIC,) partnered with UNICEF to develop a set of resources to help new open source maintainers chart an "open source roadmap" to build a community.

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At SeaGL 2019, free software was in fine feather

Filed under
GNU

While the satisfactions of software freedom are quite enjoyable on your own, some of the greatest joys of free software come from our opportunities to flock together with other members of our community: to collaborate on our work, teach new skills, or simply show off new achievements. A grassroots gathering like the Seattle GNU/Linux Conference (SeaGL) is fun because it’s so thoroughly participatory: everyone comes into the room with something they’re excited to tell you about, and they’re equally excited to hear what you’re working on. The people at the front of the room giving a keynote talk are just as likely to be sitting next to you in the next session, so you can tell them what you thought of their talk, and even find out how to participate in their projects!

As someone who is fairly new to the free software world and comparatively short on tech knowledge, I mostly attended talks on free software culture and more easily understood technological talks, although these were hardly the only topics on offer. Having unfortunately missed the opening keynotes by Lisha Sterling and Abigail Cabunoc Mayes due to some bad allergies, I began the day with a talk on DIY decentralization, by Aeva Black. Black set an irreverent tone for their talk with a reference to the notoriously goofy nineties movie Hackers, but quickly veered into much more serious territory: major digital communication platforms have exercised bias and even overt censorship against marginalized groups. How do we navigate around the power of Facebook, Twitter, Google, and the rest? Decentralization, federation, and self-hosting provide some good solutions, and a quick demonstration showed that if you have some basic know-how and tools, anyone can do it.

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WireGuard Lands In Net-Next While It Waits For Inclusion In Linux 5.6

Filed under
Linux

The WireGuard secure VPN tunnel kernel code has landed in net-next! This means that -- barring any major issues coming to light that would lead to a revert -- WireGuard will finally reach the mainline kernel with the Linux 5.6 cycle kicking off in late January or early February!

Quick action overnight surprisingly saw WireGuard already land in net-next. It was just last night before sleeping that I wrote of the latest patch review for WireGuard and its prospects for Linux 5.6 after being just too late for Linux 5.5.

Read more

Also: WireGuard VPN is a step closer to mainstream adoption

Clear Linux On The OnLogic Karbon 700 Boosted Performance By 13% Over Ubuntu With 141 Benchmarks

Filed under
Graphics/Benchmarks

Last month we reviewed the OnLogic Karbon 700 as a passively-cooled, industrial-grade PC powered by an eight-core / sixteen-thread Intel Xeon, 16GB of RAM, 512GB NVMe storage, and a plethora of connectivity options in suiting to industrial use-cases. The performance was great and even the thermal performance was very good for being a fan-less PC. In seeing how well other Linux distributions were panning out on the Karbon 700, I tested five popular Linux distributions on the Xeon Coffee Lake system and once again Intel's performance-optimized Clear Linux squeezed out much more performance potential.

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Security Leftovers

Filed under
Security
  • Security updates for Monday

    Security updates have been issued by CentOS (SDL), Debian (htmldoc, librabbitmq, nss, openjdk-7, openslp-dfsg, and phpmyadmin), Fedora (chromium, community-mysql, kernel, libidn2, oniguruma, proftpd, and rabbitmq-server), Mageia (ansible, clamav, evince, firefox, graphicsmagick, icu, libcryptopp, libtasn1, libtiff, libvncserver, libvpx, lz4, nss, openexr, openjpeg2, openssl, phpmyadmin, python-psutil, python-twisted, QT, sdl2_image, SDL_image, sysstat, thunderbird, and tnef), Oracle (firefox), Red Hat (java-1.8.0-ibm and nss), Scientific Linux (firefox and kernel), SUSE (kernel), and Ubuntu (nss).

  • Exploiting a Buffer Overflow Vulnerability

    Buffer overflow flaws can be present in both the web server and application server products that serve the static and dynamic portions of a site, or in the web application itself. Buffer overflows found in commonly-used server products are likely to become widely known and can pose a significant risk to users of these products.

  • Securing your Kubernetes cluster with Webhook and Keystone

    As we move into complex K8s cluster deployments, we need to consider a robust user and role management for our clusters. The native K8s user management is primitive and vulnerable to access and DOS attacks.

First Look: Ubuntu Cinnamon, Beautiful Remix Worthy of Becoming Official Flavor

Filed under
Ubuntu

As we reported over the weekend, Ubuntu Cinnamon Remix has seen its first ever release as an unofficial Ubuntu Cinnamon flavor featuring the beautiful and modern Cinnamon desktop environment, which is developed and maintained by the developers of the Linux Mint distribution.

To make things clear, Ubuntu Cinnamon Remix is called a "remix" because it's not yet an official flavor recognized by Canonical, but we believe it has all the odds to become an official Ubuntu flavor. However, this doesn't mean you won't get all the benefits of Ubuntu.

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New Linux Kernel Update for Red Hat Enterprise Linux 7 & CentOS 7 Fixes Two Bugs

Filed under
Linux
Red Hat
Security

The new Linux kernel update, which is available for Red Hat Enterprise Linux 7 and CentOS Linux 7 systems, is only a bugfix release, not a security update, addressing a bug that made applications consume the entire allocated CPU quota, as well as to backport the "sched: Fix race between task_group and sched_task_group" fix.

Users are advised to update their kernel packages in all the supported systems (see below for details) to kernel-3.10.0-1062.9.1.el7.x86_64.rpm and related packages, all of which are available to install for free from the stable software repositories of all supported Red Hat Enterprise Linux 7 operating system variants and CentOS Linux 7.

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New, fully working Ubuntu Linux images now available for Raspberry Pi

Filed under
Linux
Ubuntu

While most Raspberry Pi owners opt for Raspbian as their operating system, the tiny barebones board can run a number of other Linux distros, including Ubuntu.

There was a major problem with the previous Ubuntu images though -- a kernel bug prevented USB ports from working on the 4GB RAM model of the Raspberry Pi 4. A temporary workaround was proposed, but Canonical has finally fixed the flaw, and made updated 32 and 64-bit images of Ubuntu available for the Raspberry Pi 2, 3 and 4, which you can download now.

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