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today's leftovers

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  • Green Hills Software Adds Industry-Leading Advanced Software Development Tools Support for RISC-V
  • Sonoff SNZB Zigbee Sensors and Switches Launched for under $10

    All four devices are powered by a CR2450 coin cell battery and you’ll get a notification once the battery level drops below 10% in the mobile app. Which mobile? The usual eWelink app for Android or iOS which also supports integration with IFTTT. If you prefer open-source firmware, it may take more time, or never happen, as while we’ve reported on Zigbee open-source firmware, most of the work is based on TI CC25xx chips, and Sonoff Zigbee sensors are all likely based on Silicon Labs EFM32 Zigbee MCU like it is for their ZBBrigde gateway.

  • Monitoring bees with a Raspberry Pi and BeeMonitor
  • openSUSE + LibreOffice Conference Will Take Place Online

    Organizers of the openSUSE + LibreOffice Conference along with the project’s boards have made the decision to change the conference to an online conference.

    The uncertainty surrounding the COVID-19 pandemic and its effect on travel, conference planning, logistics and possibility for attendees to come to the event were reasons for shifting the event from a physical event to an online event.

    Shifting the conference online is good news and the organizers intend to provide a great conference that is filled with insightful talks, technical presentations and sessions dedicated for those who want to socialize during the event. Using video a conferencing tool, attendees learn about new technologies in openSUSE and LibreOffice and have the chance to chat to developers and ask questions. Communities involved in marketing, design, QA and other topics will be able to meet online, catch up and exchange ideas.

  • Introducing Jetpack Scan, a New Solution that Helps Small Businesses Easily Protect Their Sites from Malware Threatss

    Jetpack, the popular WordPress security and performance solution developed by Automattic, is announcing the global launch of Jetpack Scan, an automated malware and vulnerability scanning solution specifically for WordPress websites.

    [...]

    We believe in Open Source and the vast majority of our work is available under the GPL.

  • The Month in WordPress: May 2020

    May was an action-packed month for WordPress! WordPress organizers are increasingly moving WordCamps online, and contributors are taking big steps towards Full Site Editing with Gutenberg. To learn more and get all the latest updates, read on.

  • Sony uploads the kernel source code for the Xperia 10 II and Xperia 1 II

    Back in February, Sony unveiled their “Mark 2” lineup, i.e. the flagship Xperia 1 II and the mid-range Xperia 10 II smartphones via an online event. Months after the initial announcement, the phones are now available for pre-order across Europe as well as in the US. On the software side, both of these devices run Android 10 out of the box. To satisfy the requirements of the GNU General Public License v2 and kickstart the custom development of third-party ROMs and kernels, Sony has now released the kernel sources for the Xperia 10 II and the Xperia 1 II.

  • MicroK8s now native on Windows and macOS

    Windows and macOS developers can now use MicroK8s natively! Use kubectl at the Windows or Mac command line to interact with MicroK8s locally just as you would on Linux. Clean integration into the desktop means better workflows to dev, build and test your containerised apps.

    MicroK8s is a conformant upstream Kubernetes, packaged for simplicity and resilience. It provides sensible defaults and bundles the most commonly used components for at-your-fingertips access. A single-node install is one command and done in seconds, which makes it easy to add or remove from any system.

    MicroK8s is widely used by developers for local testing. After installing it, you can start and stop Kubernetes with a single command to conserve battery. With built-in GPGPU acceleration, Istio, Prometheus, Jaeger and many other popular services on tap, it serves as a complete workstation edition of K8s. All of this capability is now neatly accessible from the Windows and macOS command-line.

  • Ubuntu Weekly Newsletter Issue 633

    Welcome to the Ubuntu Weekly Newsletter, Issue 633 for the week of May 24 – 30, 2020.

  • Retrotech: The Novell NetWare Experience

    In the simplest terms possible, NetWare was a dedicated network operating system. It was designed around fast and reliable network operations at the expense of almost everything else. Novell had invested massive amounts of research in figuring out how to do fast I/O and minimizing any delays from hardware related sources. The end result was a very lean system that remained stable and performant with a large number of clients attached. As networking was Novell's bread and butter, NetWare had excellent support for everything: clients were available for DOS, Windows, UNIX, Macintosh, OS/2 and probably other platforms I've never even heard of.

    The early history of NetWare is very muddled, and pre-2.0 versions have been lost to time. This compounded with poor documentation has made it very difficult to trace the early history of the product. However, while NetWare was not the first (or only) network product for IBM PCs, it quickly became the largest, displacing IBM's PC Network, and laughed at Microsoft's LAN Manager, and IBM OS/2 LAN Server.

    While NetWare did compete on UNIX, Sun had already gotten their foot in the door by porting NFS and making it the de-facto solution for all UNIXs of the era, as well as Linux. Meanwhile, Apple held onto AppleTalk which itself survived well into the early 2000s when NetWare had already disappeared into the aether. The explosion of Wintel PCs throughout the 90s had given NetWare a market position that should have been very difficult to dislodge.

    The full story of NetWare's fall from grace is a story for another time, but I do want to go into the more technical aspects that were both the boon and bane of NetWare. Much of NetWare's success can be attributed to its own IPX protocol which made networking plug and play and drastically lowered latencies compared to NetBIOS or even TCP/IP.

More in Tux Machines

Linux Plumbers Conference Not Sold Out and Annual X.Org / Wayland / Mesa Conference Going Virtual

  • Linux Plumbers Conference: Linux Plumbers Conference is Not Sold Out

    We’re really sorry, but apparently the Cvent registration site we use has suffered a bug which is causing it to mark the conference as “Sold Out” and, unfortunately, since today is the beginning of the American Independence day weekend, we can’t get anyone to fix it until Monday. However, rest assured there are plenty of places still available, so if you can wait until Monday, you should be able to register for the conference as soon as the site is fixed.

  • The Annual X.Org / Wayland / Mesa Conference Is Going Virtual Due To COVID-19

    XDC 20 was set to take place this September in Poland but is now moving to an online event as a result of the ongoing coronavirus / COVID-19 pandemic.  The X.Org Foundation has decided to make XDC 2020 a virtual conference due to uncertainty over the COVID-19 situation come September in Europe. This will be the first time the annual X.Org Developers' Conference has been an entirely online event.  The announcement was made today as well as extending the call for presentations by an additional two weeks. 

Security: Patches and diffoscope 150 released

  • Security updates for Friday

    Security updates have been issued by Debian (docker.io and imagemagick), Fedora (alpine, firefox, hostapd, and mutt), openSUSE (opera), Red Hat (rh-nginx116-nginx), SUSE (ntp, python3, and systemd), and Ubuntu (firefox, linux, linux-aws, linux-aws-hwe, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon, linux, linux-aws, linux-gcp, linux-kvm, linux-oracle, linux-riscv, linux, linux-azure, linux-gcp, linux-gcp-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-gke-5.0, linux-oem-osp1, net-snmp, and samba).

  • What is Software Security?

    Software security is the building of secure software with inherent defense so that it continues to function under malicious attacks, to the satisfaction of the users and owners of the software. This article explains the threats and solutions, from a general point of view. Standard vocabulary in information security is also explained. You should be computer and Internet literate to understand this article; you should also have studied a computer language, e.g., Perl, C, C++, PHP, etc. What is secured is information and software packages (applications and documents). Information is any message that is useful to anybody. “Information” is a vague word. The context in which it is used gives its meaning. It can mean news, lecture, tutorial (or lesson), or solution. A software package is usually a solution to some problem or related problems. In the past, all information not spoken was written on paper. Today, the software can be considered as a subset of information.

  • L1TF Cache Flushing Mode Could Soon Be Controlled Via Kconfig Build Option

    Approaching the two year anniversary next month of the L1TF / Foreshadow vulnerability, a Google engineer has proposed allowing the default mitigation state to be controlled via a Kconfig build-time option. This speculative execution attack on Intel CPUs has been mitigated since August 2018 and has offered for KVM virtual machine mitigation the kvm-intel.vmentry_l1d_flush module parameter for controlling the L1 data cache flushing behavior. But now a Google engineer has proposed setting the default L1 data flushing mode to be configurable at build-time via a new KVM_VMENTRY_L1D_FLUSH knob. This knob doesn't provide any new L1 Terminal Fault mitigation but rather just allows adjusting the default behavior for the default configuration of that kernel image, whether it be to never flush the cache before a VMENTER, conditionally flush, or the most impactful state of always flushing.

  • diffoscope 150 released

    The diffoscope maintainers are pleased to announce the release of diffoscope version 150.

Mozilla: SpiderMonkey and Filter Treeherder Development

  • SpiderMonkey Newsletter 5 (Firefox 78-79)

    SpiderMonkey is the JavaScript engine used in Mozilla Firefox. This newsletter gives an overview of the JavaScript and WebAssembly work we’ve done as part of the Firefox 78 and 79 Nightly release cycles. If you like these newsletters, you may also enjoy Yulia’s weekly Compiler Compiler live stream, a guided tour of what it is like to work on SpiderMonkey and improve spec compliance.

  • In Filter Treeherder jobs by test or manifest path I describe the feature.

    In Filter Treeherder jobs by test or manifest path I describe the feature. In this post I will explain how it came about. I want to highlight the process between a conversation and a deployed feature. Many times, it is an unseen part of the development process that can be useful for contributors and junior developers who are trying to grow as developers. Back in the Fall of 2019 I started inquiring into developers’ satisfaction with Treeherder. This is one of the reasons I used to go to the office once in a while. One of these casual face-to-face conversations led to this feature. Mike Conley explained to me how he would look through various logs to find a test path that had failed on another platform (see referenced post for further details). After I understood the idea, I tried to determine what options we had to implement it. I wrote a Google Doc with various alternative implementations and with information about what pieces were needed for a prototype. I requested feedback from various co-workers to help discover blind spots in my plans. Once I had some feedback from immediate co-workers, I made my idea available in a Google group (increasing the circle of people giving feedback). I described my intent to implement the idea and was curious to see if anyone else was already working on it or had better ideas on how to implement it. I did this to raise awareness in larger circles, reduce duplicate efforts and learn from prior work. I also filed a bug to drive further technical discussions and for interested parties to follow up on the work. Fortunately, around the same time Andrew Halberstadt started working on defining explicitly what manifests each task executes before the tasks are scheduled (see bug). This is a major component to make the whole feature on Treeherder functional. In some cases, talking enough about the need can enlist others from their domains of expertise to help with your project.

  • Filter Treeherder jobs by test or manifest path

    This feature is useful for developers and code sheriffs because it permits them to determine whether or not a test that fails in one platform configuration also fails in other ones. Previously, this was difficult because certain test suites are split into multiple tasks (aka “chunks”). In the screenshot below, you can see that the manifest path devtools/client/framework/browser-toolbox/test/browser.ini is executed in different chunks.

Debian-based Grml 2020.06 Released and NsCDE in Debian-based Sparky

  • Grml 2020.06 – Codename Ausgehfuahangl

    We did it again™, at the end of June we released Grml 2020.06, codename Ausgehfuahangl. This Grml release (a Linux live system for system administrators) is based on Debian/testing (AKA bullseye) and provides current software packages as of June, incorporates up to date hardware support and fixes known issues from previous Grml releases. I am especially fond of our cloud-init and qemu-guest-agent integration, which makes usage and automation in virtual environments like Proxmox VE much more comfortable.

  • NsCDE

    There is a new desktop available for Sparkers: NsCDE What is NsCDE? Not so Common Desktop Environment (NsCDE) is a retro but powerful (kind of) UNIX desktop environment which resembles CDE look (and partially feel) but with a more powerful and flexible framework beneath-the-surface, more suited for 21st century unix-like and Linux systems and user requirements than original CDE. NsCDE can be considered as a heavyweight FVWM theme on steroids, but combined with a couple other free software components and custom FVWM applications and a lot of configuration, NsCDE can be considered a lightweight hybrid desktop environment.