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Linux

Tiny NanoPi Duo2 SBC offers camera connector

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Linux
Ubuntu

FriendlyElec has launched a tiny, under $20 “NanoPi Duo2” board that updates the original Duo with an Allwinner H3, Bluetooth, a camera connector, and an optional 2G carrier board.

FriendlyElec has spun out a modest upgrade to last year’s $13 (previously $8) NanoPi Duo. Like the Duo, the COM-like, $19.50 NanoPi Duo2 includes two 16-pin GPIO headers with breadboard pins in a dual-in-line layout.

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Variables in BASH - Learn BASH | Part 2

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Linux

Welcome to the second chapter of BASH scripting series in which we will discuss the topic variables. Did you know that every programming language has a way to let programmers declare variables in their programs? But what exactly are they and why do we need variables in programming? Read on below to learn more about variables.

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Btrfs To Ship Multiple Performance Improvements In The Next Linux Kernel

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Linux

Adding to the excitement around Linux 4.20~5.0 are now multiple performance improvements to the Btrfs file-system to be presented for this next Linux kernel release.

Btrfs offers a lot of features not readily available by other in-tree Linux file-systems, but even with all of the features like SSD optimizations, its performance hasn't been all that staggering (in part because, yes, it is copy-on-write by default that does hurt some workloads). But come Linux 4.20~5.0, there should be multiple speed-ups to Btrfs.

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I3C Subsystem Appears Ready For Possible Inclusion Into Linux 4.20~5.0

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Linux

There is already a lot of features slated for the Linux 4.20~5.0 kernel with its development cycle officially having gotten underway this morning. Adding to that lengthy list of expected work is the possible introduction of the I3C subsystem.

Back in January 2017 MIPI announced the I3C sensor interface specification as an improvement over the widely-used I2C. With I3C the focus was on combining the best of the I2C, SPI, and UART specifications while tailoring it so it's suitable for use by IoT devices.

Going back to shortly after the specification's debut, there have been an in-development I3C subsystem for enabling drivers and these devices to be supported by the mainline Linux kernel.

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Latest About GNU/Linux Software on Chromebooks

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GNU
Linux
Google
  • Linux Apps Coming To MediaTek-Powered Chromebooks Like The Acer R13

    Google made no mention of Linux apps on Chrome OS at last week’s hardware event in New York. I was a little surprised considering the fact that the Pixel Slate and Chrome OS saw nearly as much stage time as the Pixel phone that brought most of the media to Manhattan.

    [...]

    Unfortunately, the Chromebook R13 was quickly overshadowed by new flagships from Samsung and ASUS that featured more powerful processors and various features that made them more appealing to consumers. It was a sad happenstance for the Acer Chromebook because honestly, it is still a great device two years later. Seeing Google bring Linux apps to this device could breath much-needed new life into this model.

  • Linux app support coming to MediaTek-based Chromebooks

    Linux apps have arrived in the Chrome OS stable channel, but not all Chromebooks have access to them. The Linux container requires some kernel features that won't be backported to several models, but now Google is bringing the feature to a handful of MediaTek-based Chromebooks.

    Chrome Unboxed discovered a commit that enables Linux app support for the "oak" platform, which a number of Chromebooks were based on.

  • Linux apps on Chrome OS: An easy-to-follow guide

    The software that started out as a strictly web-centric entity — with everything revolving around the Chrome browser and apps that could operate inside it — is now one of modern computing's most versatile operating systems. Contemporary Chromebooks still run all the standard web-based stuff, of course, but they're also capable of connecting to Google's entire Play Store and running almost any Android app imaginable. And if that isn't enough, many models have recently gained the ability to run Linux apps as well.

Latest Lime SDR board builds on Raspberry Pi CM3

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Linux

The open spec, 125 x 65mm LimeNET Micro is Lime’s first fully embedded SDR board, featuring the Raspberry Pi Compute Module 3, MAX 10 FPGA, u-blox GNSS, RF transceiver, Ethernet with PoE, and optional enclosures.

UK-based Lime Microsystems has returned to Crowd Supply to launch its first fully autonomous, embedded software defined radio (SDR) platform, and the first to include integrated PoE and GNSS. The successfully funded LimeNET Micro is available through Dec. 6, starting at $269, including the integrated Raspberry Pi Compute Module 3, with shipments due Feb. 25, 2019. Other packages add enclosures and omni-directional antennas.

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Kernel: Hwmon and OOMD

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Linux
  • Hwmon Updates Sent To The Kernel Finally Complete AMD Excavator Temperature Readings

    Following this morning's Linux 4.19 release announcement, one of the first pull requests sent in of feature updates for the next 4.20~5.0 feature cycle is the hardware monitoring "hwmon" updates.

    The hwmon subsystem updates as usual include the various monitoring driver improvements. Most notable though is including the patch we talked about back in September for finally reporting CPU temperatures for all AMD Excavator CPU cores. That patch didn't end up getting sent in as a "fix" during Linux 4.19 development but is now sent in for this next kernel cycle.

  • Facebook Developing "OOMD" For Out-of-Memory User-Space Linux Daemon

    While the Linux kernel has its own out-of-memory (OOM) killer when system memory becomes over-committed, Facebook developers have been developing their own user-space based solution for handling this situation.

    [...]

    Facebook's Daniel Xu will be talking about OOMD at the Open-Source Summit Europe tomorrow in Edinburgh. But if you can't make it there are the slides (PDF) already available. The OOMD project is hosted on GitHub under the GPLv2 license.

Red Hat underpins the growing importance of Linux and open source

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Linux
Red Hat
OSS

While you may not spend a lot of time thinking about this, the role Linux plays in the technology that we all use everyday is growing quite significantly. In an effort to more fully appreciate this, I had an opportunity to speak with the new vice resident and general manager of Red Hat's RHEL Business Unit — Dr. Stefanie Chiras — and ask about her vision for RHEL and Linux in general. She was very enthusiastic — not just for Red Hat, but for the open source movement overall and the rising importance of Linux.

Chiras started with Red Hat in July — not quite four months ago — and already describes herself as a “true Red Hatter.” She explained that she has had a serious focus on Linux for the last six years or more. As she points out, we all do development differently these days because of the open source movement. The changes in just the last five years have moved us to very different ways of doing things whether we're working on public or private clouds, containers, or bare metal.

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Review: System76 Oryx Pro Laptop

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Linux
Reviews

I should start by saying that although I'm definitely no newbie to Linux, I'm new to the world of dedicated Linux laptops. I started with Linux in 1996, when Red Hat 4.0 had just adopted the 2.0 kernel and Debian 1.3 hadn't yet been released. I've run a variety of distros with varying degrees of satisfaction ever since, always looking for the Holy Grail of a desktop UNIX that just plain worked.

About 15 years ago after becoming frustrated with the state of Linux on laptop hardware (in a phrase, "nonexistent hardware support"), I switched my laptops over to Macs and didn't look back. It was a true-blue UNIX that just plain worked, and I was happy. But I increasingly found myself frustrated by things I expected from Linux that weren't available on macOS, and which things like Homebrew and MacPorts and Fink could only partly address.

My last MacBook Pro is now four years old, so it was time to shop around again. After being underwhelmed by this generation of MacBooks, I decided to take the risk on a Linux laptop again.

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Red Hat: OpenShift and Awards

  • OpenShift Commons Briefing: OpenShift 3.11 Release Update with Scott McCarty (Red Hat)
    In this briefing, Red Hat’s Scott McCarty and numerous other members of the OpenShift Product Management team gave an in-depth look at Red Hat’s OpenShift’s latest release 3.11 and some insights in to the road ahead.
  • Awards roll call: Red Hat awards, June to October 2018
    Depending on the weather in your region, it’s safe to say that the seasons are changing so it’s a good time to look back at what was a busy few months for Red Hat, especially when it came to industry awards for our technical and product leadership. In recent months, Red Hat products and technologies took home twenty awards, highlighting the breadth and depth of our product portfolio as well as the expertise that we provide to our customers. In addition, Red Hat as a company won five awards recognizing its growth and culture as a leader in the industry.
  • More advice from a judge - what it takes to win a Red Hat Innovation Award
    Last year I penned the below post to provide insight into what the judges of the Red Hat Innovation Awards are looking for when reviewing submissions. Looking back, I would give almost the identical advice again this year...maybe with a few tweaks. With all the stellar nominations that we receive, the question I often get is, “how can we make our entry standout?” There’s no magic formula for winning the Red Hat Innovation Awards, but there are things that the other judges and I look for in the entries. Overall, we’re looking for the project that tells a compelling story. It’s not just about sharing what Red Hat products and services you used, we want to hear the full narrative. What challenges did you face; how you implemented the project; and ultimately, what was the true business impact and transformation that took place? Submissions that are able to showcase how open source culture and values were key to success, or how the project is making a difference in the lives of others, are the entries that most often rise to the top.

today's howtos

OSS Leftovers

  • How to be an effective and professional member of the Samba user and development Community
    For many years we have run these lists dedicated to developing and promoting Samba, without any set of clear guidelines for people to know what to expect when participating.  What do we require? What kind of behavior is encouraged?
  • Blockcerts Updates Open Source Blockchain Architecture
    Learning Machine is making changes to its Blockcerts Credential Issuer, Verifier and Wallet to enable native support for records issuance and verification using any blockchain. Blockcerts was launched by Learning Machine and MIT Media Lab in 2016 as new way to allow students to receive digital diplomas through an app, complementing a traditional paper degree. Blockcerts was originally designed to be blockchain-agnostic, which means that open standards can be used to anchor records in any blockchain. The Blockcerts Universal Identifier recognizes which blockchain is being used and verifies accordingly. Currently, the open source project has added support for bitcoin and Ethereum blockchains, but anyone can add support through the project's GitHub page.
  • First full featured open-source Ethereum block explorer BlockScout launched by POA Network
  • Amsterdam-based ING Bank Introduces Open-Source Zero Knowledge Technology
  • ING Bank Launches Open Source Privacy Improvement Add-On for Blockchains
  • Imec tool accelerates DNA sequencing 10x
    As a result, in a typical run, elPrep is up to ten times faster than other software tools using the same resources. It is designed as a seamless replacement that delivers the exact same results as GATK4.0 developed by the Broad Institute. elPrep has been written in the Go programming language and is available through the open-source GNU Affero General Public License v3 (AGPL-3.0).
  • On the low adoption of automated testing in FOSS
    A few times in the recent past I've been in the unfortunate position of using a prominent Free and Open Source Software (FOSS) program or library, and running into issues of such fundamental nature that made me wonder how those issues even made it into a release. In all cases, the answer came quickly when I realized that, invariably, the project involved either didn't have a test suite, or, if it did have one, it was not adequately comprehensive. I am using the term comprehensive in a very practical, non extreme way. I understand that it's often not feasible to test every possible scenario and interaction, but, at the very least, a decent test suite should ensure that under typical circumstances the code delivers all the functionality it promises to. [...] Most FOSS projects, at least those not supported by some commercial entity, don't come with any warranty; it's even stated in the various licenses! The lack of any formal obligations makes it relatively inexpensive, both in terms of time and money, to have the occasional bug in the codebase. This means that there are fewer incentives for the developer to spend extra resources to try to safeguard against bugs. When bugs come up, the developers can decide at their own leisure if and when to fix them and when to release the fixed version. Easy! At first sight, this may seem like a reasonably pragmatic attitude to have. After all, if fixing bugs is so cheap, is it worth spending extra resources trying to prevent them?
  •  
  • Chrome for Linux, Mac, and Windows Now Features Picture-in-Picture by Default
    Chromium evanghelist at Google François Beaufort announced today that Picture-in-Picture (PiP) support is now enabled by defualt in the Google Chrome web browser for Linux, Mac, and Windows platforms. Google's engineers have been working for months to add Picture-in-Picture (PiP) support to the Google Chrome web browser, but the long-anticipated feature is finally here, enabled by default in the latest version for Linux, Mac, and Windows operating systems. The feature lets you detach a video in a floating window so you can watch it while doing something else on your computer.
  • Teaching With an Index Card: the Benefits of Free, Open-Source Tools
  • Decentralized Authentication for Self-Sovereign Identities using Name Systems
    The GNU Name System (GNS) is a fully decentralized public key infrastructure and name system with private information retrieval semantics. It serves a holistic approach to interact seamlessly with IoT ecosystems and enables people and their smart objects to prove their identity, membership and privileges - compatible with existing technologies. In this report we demonstrate how a wide range of private authentication and identity management scenarios are addressed by GNS in a cost-efficient, usable and secure manner. This simple, secure and privacy-friendly authentication method is a significant breakthrough when cyber peace, privacy and liability are the priorities for the benefit of a wide range of the population. After an introduction to GNS itself, we show how GNS can be used to authenticate servers, replacing the Domain Name System (DNS) and X.509 certificate authorities (CAs) with a more privacy-friendly but equally usable protocol which is trustworthy, human-centric and includes group authentication. We also built a demonstrator to highlight how GNS can be used in medical computing to simplify privacy-sensitive data processing in the Swiss health-care system. Combining GNS with attribute-based encryption, we created ReclaimID, a robust and reliable OpenID Connect-compatible authorization system. It includes simple, secure and privacy-friendly single sign-on to seamlessly share selected attributes with Web services, cloud ecosystems. Further, we demonstrate how ReclaimID can be used to solve the problem of addressing, authentication and data sharing for IoT devices. These applications are just the beginning for GNS; the versatility and extensibility of the protocol will lend itself to an even broader range of use-cases. GNS is an open standard with a complete free software reference implementation created by the GNU project. It can therefore be easily audited, adapted, enhanced, tailored, developed and/or integrated, as anyone is allowed to use the core protocols and implementations free of charge, and to adopt them to their needs under the terms of the GNU Affero General Public License, a free software license approved by the Free Software Foundation.
  • Make: an open source hardware, Arduino-powered, 3D-printed wire-bending machine
    How To Mechatronics has pulled together detailed instructions and a great video explaining how to make an Arduino-powered, 3D-printed wire-bending machine whose gears can create arbitrary vector images out of precision-bent continuous lengths of wire.
  • RApiDatetime 0.0.4: Updates and Extensions
    The first update in a little while brings us release 0.0.4 of RApiDatetime which got onto CRAN this morning via the lovely automated sequence of submission, pretest-recheck and pretest-publish. RApiDatetime provides seven entry points for C-level functions of the R API for Date and Datetime calculations. The functions asPOSIXlt and asPOSIXct convert between long and compact datetime representation, formatPOSIXlt and Rstrptime convert to and from character strings, and POSIXlt2D and D2POSIXlt convert between Date and POSIXlt datetime. This releases brings asDatePOSIXct as a seventh courtesy of Josh Ulrich. All these functions are all fairly useful, but not one of them was previously exported by R for C-level use by other packages. Which is silly as this is generally extremely carefully written and tested code.
  • 6 JavaScript books you should know
    If there was ever the potential for a giant book list it's one based on our favorite Javascript books. But, this list is short and easy to digest. Maybe it will help you get started, gently. Plus, check out three of our top Javascript articles with even more books, resources, and tips.

Security: Telstra, Google+ and Facebook Incidents, and Latest Updates