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Tuesday, 23 Jul 19 - Tux Machines is a community-driven public service/news site which has been around for over a decade and primarily focuses on GNU/LinuxSubscribe now Syndicate content

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Quick Roundup

  • 07/07/2019 - 5:40pm
    JamieCull
  • 04/07/2019 - 7:09pm
    ksanaj
  • 18/07/2018 - 6:58am
    arindam1989
  • 14/08/2017 - 5:04pm
    2daygeek
  • 11/07/2017 - 9:36am
    itsfoss
  • 04/05/2017 - 11:58am
    Variscite
  • 09/04/2017 - 4:47pm
    mwilmoth
  • 11/01/2017 - 12:02am
    tishacrayt
  • 11/01/2017 - 12:01am
    lashayduva
  • 10/01/2017 - 11:56pm
    neilheaney

KDE: Kate and KDE ISO Image Writer

Filed under
KDE
  • Kate LSP Status – July 22

    After my series of LSP client posts, I got the question: What does this actually do? And why should I like this or help with it?

    For the basic question: What the heck is the Language Server Protocol (LSP), I think my first post can help. Or, for more details, just head over to the official what/why/… page.

    But easier than to describe why it is nice, I can just show the stuff in action. Below is a video that shows the features that at the moment work with our master branch. It is shown using the build directory of Kate itself.

  • KDE ISO Image Writer – GSoC Phase 2

    The original user interface used KAuth to write the ISO image without having to run the entire application with root privileges. KAuth is a framework that allows to perform privilege elevation on restricted portions of code. In order to run an action with administrator privileges without having to run the entire application as an administrator, an additional binary (KAuth helper) which is included alongside the main application binary will perform the actions that require elevated privileges. This approach allows privileges escalation for specific portions of code without granting elevated privileges for code that does not need them. After integrating the existing KAuth helper into the new user interface, it was able to write ISO images by asking for authorisation when required.

Security: Windows Ransomware, Linux Tools and Linux FUD

Filed under
Security
  • The Growing Threat of Targeted Ransomware [iophk: Windows TCO]

    The two primary differences between targeted attacks and the early versions of spray-and-pray ransomware attacks is the size of ransom demanded and the technical expertise of the hackers. Symantec has analyzed six stages of a targeted attack: initial (typically involving PowerShell); lateral movement (typically with Mimikatz and/or Putty); stealth and countermeasures (with signed malware and disabled security software); ransomware spreading (typically through batch files and PS Exec); triggering the encryption; and finally the ransom demand.

    In January 2017 there were just two targeted attacks per month. By May 2019 this had risen to more than 50 per month, with the sharpest increasing occurring in 2019. There have already been at least two and probably three new targeted attack groups discovered. The pace of targeted attacks is clearly increasing, and it looks like it will continue to increase. Targeted ransomware attacks have evolved into one of the biggest cyber threats to business today.

  • Quest’s KACE SDA 7.0 automates large-scale system deployment and simplifies migrations

    The newest release of KACE SMA also supports new OS versions such as macOS 10.14, Windows 10 Fall 2018 Update, SUSE 15, and Fedora 28 and OpenSUSE 15 (both agentless only).

  • ESET unveils new version of File Security for Linux

    ESET File Security for Linux provides advanced protection to organisations’ general servers, network file storage and multipurpose servers. The software ensures the servers are stable and conflict-free in order to preserve system resources for vital tasks and avoid disrupting business continuity.

    As the use of Linux servers increases in popularity with organisations, it is vital that all users and their businesses remain protected against the latest threats.

  • Hackers Exploit Jira, Exim Linux Servers to "Keep the Internet Safe' [Ed: Troll site "BleepingComputer" is blaming on "Linux" unpatched applications; that's like blaming Windows for Adobe PhotoShop (with holes in it) because it can run on Windows]

    The newest variant spotted by Intezer Labs' researcher polarply on VirusTotal uses a malicious payload designed to exploit the 12-day old Jira template injection vulnerability tracked as CVE-2019-11581 that leads to remote code execution.

Announcing coreboot 4.10

Filed under
Hardware
OSS

The 4.10 release covers commit a2faaa9a2 to commit ae317695e3 There is a pgp signed 4.10 tag in the git repository, and a branch will be created as needed.

In nearly 8 months since 4.9 we had 198 authors commit 2538 changes to master. Of these, 85 authors made their first commit to coreboot: Welcome!

Between the releases the tree grew by about 11000 lines of code plus 5000 lines of comments.

Read more

Also: Coreboot 4.10 Released With New Support For Many Chromebooks & Random Motherboards

Red Hat and Fedora Leftovers

Filed under
Red Hat
  • Building an organization that's always learning: Tips for leaders

    In open organizations, informal learning is critical to success. "Informal learning" accounts for all learning that occurs outside a training program, a classroom, or another formalized instruction setting. Unlike the learning in these formalized learning settings, informal learning is unstructured, personal, and voluntary.

    As a result, systematic study of it is difficult. But due to the prevalence and importance of informal learning in workplaces, several researchers have called for additional research into the subject—and particularly for the design of instruments to actually measure informal learning. Such instruments could likewise be useful in open organizations hoping to measure and foster informal learning practices among employees.

  • 9 people for sysadmins to follow on Twitter

    While Twitter certainly isn't the most open source platform, the open source community on the social network brings a lot of great minds together on a daily basis. The site, as I see it, also democratizes access to these brilliant minds since we're all just one @ away.

    Here are nine people whose Twitter accounts are making my pursuit of sysadmin knowledge, and its continued evolution, better. They fall across the spectrum of technology with the one thing they have in common being their passionate, informative, and thoughtful perspective. They share a wealth of knowledge from explaining Linux commands through comics, to applying a PhD's worth of knowledge to making DevOps make sense.

  • Fedora 32 System-Wide Change proposal: x86-64 micro-architecture update
    Fedora currently uses the original K8 micro-architecture (without 3DNow! and other AMD-specific parts) as the baseline....
    
  • Fedora Developers Discuss Raising Base Requirement To AVX2 CPU Support

    An early change being talked about for Fedora 32, due out in the spring of next year, is raising the x86_64 CPU requirements for running Fedora Linux. When initially hearing of this plan, the goal is even more ambitious than I was initially thinking: AVX2.

    A feature proposal for Fedora 32 would raise the x86_64 base-line for their compiler builds to needing AVX2. Advanced Vector Extensions 2 is Intel Sandy Bridge and newer or AMD Jaguar/Bulldozer and newer. This came as quite a surprise even to myself that Fedora is planning to jump straight from their existing AMD K8 baseline to now AVX2-supportive CPUs.

  • Stable docker CE for Fedora 30 are available!

    Do you use docker? If you are using Fedora 30 then I have good news for you. They officially relesed stable docker CE for Fedora 30, yay!

    Most of us have been waiting for stable docker since February, OMG! You can check issue #600 how frustrating most of docker users because we don’t have stable release and unable to use testing or nightly release because of missing containerd.io and forced dev to seek alternatives using old repo (F29) or using Podman as workaround.

  • Outreachy FHP week 7: Pytest, UI enhancements, FAS search

    From Outreachy.org: The theme for this week is “Modifying Expectations”. Outreachy mentors and interns start the internship with a specific set of project goals. However, usually those goals need to be modified, and that’s perfectly fine! Delays to projects happen. Maybe your project turned out to be more complicated than you or your mentor anticipated. Maybe you needed to learn some concepts before you could tackle project tasks. Maybe the community documention wasn’t up-to-date or was wrong. These are all perfectly valid reasons for projects to be a bit behind schedule, as long as you’ve been working full-time on the project. In fact, free and open source contributors have to deal with these kinds of issues all the time. Projects often seem simple until you start working on them. Project timelines are ususally a very optimistic view of what could happen if everything goes exactly as planned. It often doesn’t, but people still make optimistic plans. Modifying your project timeline to set more realistic goals is a skill all contributors need to learn.

    [....]

    I was a beginner in Django when I started working on this project. Earlier I worked on JavaScript-based framework, and switching to Python was a big change for me. So, it was always learning and implementing on my part. Since Django was new to me, I had to learn it fast, at least the core concept. I found some good resources but they were so detailed that at the end of the document, I would have lost interest in some of the topics. Then I found this tutorial, which turned out to be the perfect platform to have an overall grasp of the widely used python framework.

    I learned about containers, their importance and concept of virtualization. How Docker can also be used when we want to deploy an application to an environment. Understood the concept behind it, learned the basic commands and how to deal with multiple Docker containers.

    In the second half of my internship, I improved and wrote tests of the project without having any prior knowledge of the concept at the beginning.

Programming Leftovers

Filed under
Development
  • Excellent Free Books to Learn Java

    Java is a general-purpose, concurrent, class-based, object-oriented, high-level programming language and computing platform first released by Sun Microsystems in 1995. It is related in some ways to C and C++, in particular with regard to its syntax, and borrows a few ideas from other languages. Java applications are compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture.

    Java is designed to be simple enough that many programmers can quickly become proficient in the language. It’s one of the most popular programming languages especially for client-server web applications.

  • GFX-RS Portability 0.7 Released With Vulkan Events, Binding Model Improvements

    The GFX-RS high performance graphics API for the Rust programming language and based on Vulkan while mapping to Metal when on Apple systems is out with a new release.

    GFX-RS continues to be about being a cross-platform API for Rust that is bindless and high performance while retaining the traits of Vulkan but with back-ends as well for Direct3D 11/12, Metal, and even OpenGL 2 / GLES2.

  • Use the Requests module to directly retrieve the market data

    Hello and welcome back to our cryptocurrency project. In the previous article I had mentioned before that I want to use the cryptocompy module to create our new cryptocurrency project, however, after a closer look at the CriptoCompare API I think we have better used the original API to make the rest call instead of using the wrapper module because the original API seems to provide more returned data type than the one offered by the cryptocompy module.

  • Eli Bendersky: Faster XML stream processing in Go

    XML processing was all the rage 15 years ago; while it's less prominent these days, it's still an important task in some application domains. In this post I'm going to compare the speed of stream-processing huge XML files in Go, Python and C and finish up with a new, minimal module that uses C to accelerate this task for Go. All the code shown throughout this post is available in this Github repository the new Go module is here.

  • How to Use Binder and Python for Repoducible Research

    In this post we will learn how to create a binder so that our data analysis, for instance, can be fully reproduced by other researchers. That is, in this post we will learn how to use binder for reproducible research.

    In previous posts, we have learned how to carry out data analysis (e.g., ANOVA) and visualization (e.g., Raincloud plots) using Python. The code we have used have been uploaded in the forms of Jupyter Notebooks.

  • Wingware Blog: Introducing Functions and Methods with Refactoring in Wing Pro

    In this issue of Wing Tips we explain how to quickly create new functions and methods out of existing blocks of Python code, using Wing Pro's Extract Method/Function refactoring operation.

    This is useful whenever you have some existing code that you want to reuse in other places, or in cases where code gets out of hand and needs to be split up to make it more readable, testable, and maintainable.

    Wing supports extracting functions and methods for any selected code, so long as that code does not contain return or yield statements. In that case automatic extraction is not possible, since Wing cannot determine how the extracted function should be called from or interact with the original code.

  • How to Use Binder and Python for Reproducible Research

    In this post we will learn how to create a binder so that our data analysis, for instance, can be fully reproduced by other researchers. That is, in this post we will learn how to use binder for reproducible research.

    In previous posts, we have learned how to carry out data analysis (e.g., ANOVA) and visualization (e.g., Raincloud plots) using Python. The code we have used have been uploaded in the forms of Jupyter Notebooks.

    Although this is great, we also need to make sure that we share our computational environment so our code can be re-run and produce the same output. That is, to have a fully reproducible example, we need a way to capture the different versions of the Python packages we’re using.

  • NumPy arange(): How to Use np.arange()

    NumPy is the fundamental Python library for numerical computing. Its most important type is an array type called ndarray. NumPy offers a lot of array creation routines for different circumstances. arange() is one such function based on numerical ranges. It’s often referred to as np.arange() because np is a widely used abbreviation for NumPy.

    Creating NumPy arrays is important when you’re working with other Python libraries that rely on them, like SciPy, Pandas, Matplotlib, scikit-learn, and more. NumPy is suitable for creating and working with arrays because it offers useful routines, enables performance boosts, and allows you to write concise code.

  • Cogito, Ergo Sumana: Beautiful Soup is on Tidelift

    I've been doing a tiny bit of consulting for Tidelift for a little over a year now, mainly talking about them to open source maintainers in the Python world and vice versa. (See my October 2018 piece "Tidelift Is Paying Maintainers And, Potentially, Fixing the Economics of an Industry".) And lo, in my household, my spouse Leonard Richardson has signed up as a lifter for Beautiful Soup, his library that helps you with screen-scraping projects.

  • Chris Moffitt: Automated Report Generation with Papermill: Part 1

    This guest post that walks through a great example of using python to automate a report generating process. I think PB Python readers will enjoy learning from this real world example using python, jupyter notebooks, papermill and several other tools.

  • Cryptocurrency user interface set up

    As mentioned above, in this article we will start to create the user interface of our latest cryptocurrency project. Along the path we will also use the CryptoCompare API to retrieve data.

  • Python Snippet 2: Quick Sequence Reversal
  • 10x Evilgineers | Coder Radio 367

    Mike rekindles his youthful love affair with Emacs and we debate what makes a "10x engineer".

    Plus the latest Play store revolt and some of your feedback.

BlueStar Linux 5.2.1

Filed under
Reviews

Today we are looking at BlueStar Linux 5.2.1. This release of BlueStar is an Arch rolling distro and comes with Linux Kernel 5.2.1 and KDE Plasma 5.16.3 and uses about 700MB of ram when idling.

Bluestar Linux is a beautiful Arch/KDE distro that works great out of the box and is receiving a lot of love from their very active developer.

Read more

Direct/video: BlueStar Linux 5.2.1 Run Through

GNU Parallel 20190722 ('Ryugu') released

Filed under
Development
GNU

GNU Parallel 20190722 ('Ryugu') has been released. It is available for download at: http://ftpmirror.gnu.org/parallel/
GNU Parallel is 10 years old next year on 2020-04-22. You are here by invited to a reception on Friday 2020-04-17.

Read more

Audiocasts/Shows: This Week in Linux, Command Line Heroes, DevNation Live Introducing Kogito and Python Podcast

Filed under
Interviews
  • Episode 75 | This Week in Linux

    On this episode of This Week in Linux, we’ve got a lot of Distro News with the first stable release of EndeavourOS, and we’ve also got new releases from Proxmox, deepin and FerenOS. Dropbox has decided to revert their weird decision of blocking various Linux Filesystems so we’ll talk about that. We’ve got some App News with KDE Connect now being available for macOS and a new release for the Foliate, ebook reader. Later in the show, we’ll cover some Linux Security news regarding a recently found piece of malware targeting the Linux Desktop. Then we’ll round out the show with some Linux Gaming news from Epic Games, Valve, Google Stadia and a new Humble Bundle. All that and much more on Your Weekly Source for Linux GNews!

  • JavaScript's surprising rise from the ashes of the browser wars on Command Line Heroes

    The third season of the Command Line Heroes podcast continues its look at the history of the programming languages we depend on every day. Episode 3, released today, investigates the origin of JavaScript. Here's the unlikely story of how it happened.

  • DevNation Live: Introducing Kogito

    DevNation Live tech talks are hosted by the Red Hat technologists who create our products. These sessions include real solutions and code and sample projects to help you get started. In this talk, you’ll learn about Quarkus, Kogito, and GraalVM from Red Hat’s Mario Fusco, Principal Software Engineer, and Burr Sutter, Chief Developer Evangelist.

    These days rule engines are often overlooked, possibly because people think that they are only useful inside heavyweight enterprise software products. However, this is not necessarily true. Simply put, a rule engine is just a piece of software that allows you to separate domain and business-specific constraints from the main application flow. Drools is the rule engine of Red Hat, and our goal is to make it ready to be used in serverless environments.

  • Protecting The Future Of Python By Hunting Black Swans

    The Python language has seen exponential growth in popularity and usage over the past decade. This has been driven by industry trends such as the rise of data science and the continued growth of complex web applications. It is easy to think that there is no threat to the continued health of Python, its ecosystem, and its community, but there are always outside factors that may pose a threat in the long term. In this episode Russell Keith-Magee reprises his keynote from PyCon US in 2019 and shares his thoughts on potential black swan events and what we can do as engineers and as a community to guard against them.

Community Snapcrafter on MicroK8s, summits and the evolving nature of snaps

Filed under
Ubuntu

In January 2018, Dan Llewellyn joined his first Snapcraft Summit in Seattle in his role as a community Snapcrafter. At that event, we discussed his views on everything snap related from most requested snaps, new feature requests and popular discussion topics. Since then, snaps has grown across every metric and seen numerous new high profile snaps enter the store including Microsoft Visual Studio Code, a suite from JetBrains, Opera and more. We took the opportunity at the most recent Snapcraft Summit in Montreal to get Dan’s insider perspective 18 months on.

“Snaps are reaching ubiquity. People using or building snaps no longer think of themselves as early adopters, but more adhering to the status quo,” Dan observes. There has been a “natural progression” in the growth trajectory that snaps have experienced. Dan believes part of this is driven by developers seeing the likes of Microsoft, Amazon and Google publishing software in the Snap Store. Similarly, Dan has noticed an increase in commercial interest in the format compared to individual developers in the earlier days.

Dan also suggests two additional factors for the increased adoption. Firstly, the availability in the Ubuntu store with desktop users being served snaps first over other formats. Secondly, the crossover with the Docker container story – users like the throwaway nature. They can do their work, delete and start again with the next build.

Such trends are evident in the nature of the forum conversation as well with less discussion around how to build snaps and far more around the management of existing snaps. He has also seen less around the automatic update feature which he believes is due to the message resonating and it is now a given. “People are comfortable with the feature and expect automatic updates when originally they may have been sceptical if it would work on a desktop or IoT device,” Dan adds. Talking of IoT, Dan has seen an uplift in topics around the internet of things given the benefits snaps can bring to embedded devices.

Read more

Spanish Air Force fights obsolescence and insecurity through open source

Filed under
OSS

Keeping the ICT systems and infrastructures of the Spanish Air Force secure is like fighting a many-headed dragon. So Col. Fernando Acero Martin, Director of Cyber Defence at the Spanish Air Force, told his audience at the OpenExpo Europe conference last month in Madrid. The solution lies in using Linux and other open source software.

Read more

One Mix 1S Yoga mini laptop Linux test

Filed under
Linux
Reviews

I took a loaded up a few different GNU/Linux distributions onto USB flash drives, booted into them (by pressing F7 on the One Mix 1S Yoga at the boot splash screen), and checked to see what works out of the box, and what doesn’t.

Here’s what I found.

Priced at about $440, the One Mix 1S Yoga is one of the most affordable laptops around with a screen size smaller than 7 inches.

But it’s also one of the newest models, and I’m not aware of any custom GNU/Linux distributions optimized for this particular computer yet. The folks behind Ubuntu MATE, for example, offer a custom version of that operating system that’s designed for UMPC (Ultra Mobile PC) computers including the GPD Pocket, GPD Pocket 2, GPD MicroPC, and Topjoy Falcon. But it doesn’t yet seem to support the One Mix 1S Yoga (the operating system loads fine, but some of the display tweaks don’t work).

Still, while the out-of-the-box experience with most Linux-based operating systems I’ve tested so far is imperfect, it’s also promising.

Read more

Compute module and SBC showcase Cortex-A7/M4 processor

Filed under
Android
Linux

Emtrion’s “emSBC argon” SBC is powered by an “emSTAMP-Argon” module that runs Linux or Android on a dual-core Cortex-A7 STM32MP157 SoC and offers dual CAN ports.

Germany-based Emtrion has posted a product page for a compute module and SBC equipped with the new STM32MP1 system-on-chip from STMicroelectronics (ST). Like the Renesas RZ/N1D SoC that powers Emtrion’s SBC-RZN1D, the STM32MP1 on Emtrion’s emSTAMP-Argon module combines a pair of 650MHz Cortex-A7 cores with a Cortex-M MCU, in this case a 209MHz Cortex-M4. Unlike the monolithic SBC-RZN1D, the emSBC argon SBC is a sandwich-style product that integrates the emSTAMP-Argon module using an edge-castellated “stamp hole” interface.

Read more

today's leftovers

Filed under
Misc
  • Linux Weekly Roundup #35

    Hello and welcome to this week's Linux Roundup and what a wonderful week we had!

    We have plenty of Linux Distro releases and LibreOffice 6.3 RC1.

    The Linux distros with releases this week are Q4OS 3.8, SparkyLinux 5.8, Mageia 7.1, ArcoLinux 19.07.11, Deepin 15.11, ArchBang 2107-beta, Bluestar 5.2.1, Slackel 7.2 "Openbox" and Endeavour OS 2019.07.15.

    I looked at most of these Linux Distros, links below, I will look at some of them in the new week and some I will unfortunately not have a look at, for download links and more, please visit distrowatch.com

    Well, this is this week's Linux Roundup, thank you so much for your time! Have a great week!

  • Full Circle Magazine: Full Circle Weekly News #140
  • Christopher Allan Webber: ActivityPub Conf 2019

    That's right! We're hosting the first ever ActivityPub Conf. It's immediately following Rebooting Web of Trust in Prague.

    There's no admission fee to attend. (Relatedly, the conference is kind of being done on the cheap, because it is being funded by organizers who are themselves barely funded.) The venue, however, is quite cool: it's at the DOX Centre for Contemporary Art, which is itself exploring the ways the digital world is affecting our lives.

    If you plan on attending (and maybe also speaking), you should get in your application soon (see the flier for details). We've never done one of these, and we have no idea what the response will be like, so this is going to be a smaller gathering (about 40 people). In some ways, it will be somewhere between a conference and a gathering of people-who-are-interested-in-activitypub.

    As said in the flier, by attending, you are agreeing to the code of conduct, so be sure to read that.

Sysadmin Appreciation Day, IBM and Fedora

Filed under
Red Hat
Server
  • Gift ideas for Sysadmin Appreciation Day

    Sysadmin Appreciation Day is coming up this Friday, July 26. To help honor sysadmins everywhere, we want you to share your best gift ideas. What would be the best way a team member or customer could show their appreciation for you? As a sysadmin, what was the best gift you've ever received? We asked our writers the same question, and here are their answers:

    "Whilst working in the Ubuntu community on Edubuntu, I took it upon myself to develop the startup/shutdown sound scheme, which became the default in Ubuntu for, from what I can understand, the next decade. Whilst people had a love-hate relationship with my sound scheme, and rightly so, I had a love-hate relationship with my sound card during the development.

    At the time I had recorded all my sound samples using one sample rate, but my new sound card, as my motherboard had exploded a few days earlier, did not support it. I had two choices, resample all my samples (which I didn't really want to do) or buy a new sound card.

  • Red Hat OpenStack Platform with Red Hat Ceph Storage: Radosbench baseline performance evaluation

    Red Hat Ceph Storage is popular storage for Red Hat OpenStack Platform. Customers around the world run their hyperscale, production workloads on Red Hat Ceph Storage and Red Hat OpenStack Platform. This is driven by the high level of integration between Ceph storage and OpenStack private cloud platforms. With each release of both platforms, the level of integration has grown and performance and automation has increased. As the customer's storage and compute needs for footprints have grown, we have seen more interest towards running compute and storage as one unit and providing a hyperconverged infrastructure (HCI) layer based on OpenStack and Ceph.

    [...]

    Continuing the benchmarking series, in the next post you’ll learn performance insights of running multi-instance MySQL database on Red Hat OpenStack Platform and Red Hat Ceph Storage across decoupled and hyperconverged architectures. We’ll also compare results from a near-equal environment backed by all-flash cluster nodes.

  • The State of Java in Flathub

    For maintainers of Java-based applications in Flathub, it's worth noting that even if you consume the Latest OpenJDK extension in your application, users will not be broken by major updates because OpenJDK is bundled into your Flatpak. The implication of this for users is that they won't see updates to their Java version until the application maintainer rebuilds the application in Flathub.

    If you maintain a Java-based Flatpak application on Flathub, you can consume the latest version of your chosen OpenJDK stream (either LTS or Latest) simply by rebuilding; the latest version of that OpenJDK steam will be pulled in automatically.

  • Fedora Magazine: Contribute at the Fedora Test Week for kernel 5.2

    The kernel team is working on final integration for kernel 5.1. This version was just recently released, and will arrive soon in Fedora. This version has many security fixes included. As a result, the Fedora kernel and QA teams have organized a test week from Monday, Jul 22, 2019 through Monday, Jul 29, 2019. Refer to the wiki page for links to the test images you’ll need to participate. Read below for details.

Debian and Ubuntu Leftovers

Filed under
Debian
Ubuntu
  • Bootstrappable Debian BoF

    Greetings from DebConf 19 in Curitiba! Just a quick reminder that I will run a Bootstrappable Debian BoF on Tuesday 23rd, at 13.30 Brasilia time (which is 16.30 UTC, if I am not mistaken). If you are curious about bootstrappability in Debian, why do we want it and where we are right now, you are welcome to come in person if you are at DebCon or to follow the streaming.

  • Candy Tsai: Outreachy Week 6 – Week 7: Getting Code Merge

    You can’t overhear what others are doing or learn something about your colleagues through gossip over lunch break when working remotely. So after being stuck for quite a bit, terceiro suggested that we try pair programming.

    After our first remote pair programming session, I think there should be no difference in pair programming in person. We shared the same terminal, looked at the same code and discussed just like people standing side by side.

    Through our pair programming session, I found out that I had a bad habit. I didn’t run tests on my code that often, so when I had failing tests that didn’t fail before, I spent more time debugging than I should have. Pair programming gave insight to how others work and I think little improvements go a long way.

  • about your wiki page on I/O schedulers and BFQ
    Hi,
    this is basically to report outdated statements in your wiki page on
    I/O schedulers [1].
    
    The main problematic statement is that BFQ "...  is not ideal for
    devices with slow CPUs or high throughput I/O devices" because too
    heavy.  BFQ is definitely more sophisticated than any of the other I/O
    schedulers.  We have designed it that way to provide an incomparably
    better service quality, at a very low overhead.  As reported in [2],
    the execution time of BFQ on an old laptop CPU is 0.6 us per I/O
    event, against 0.2 us for mq-deadline (which is the lightest Linux I/O
    scheduler).
    
    To put these figures into context, BFQ proved to be so good for
    "devices with slow CPUs" that, e.g., Chromium OS migrated to BFQ a few
    months ago.  In particular, Google crew got convinced by a demo [3] I
    made for them, on one of the cheapest and slowest Chromebook on the
    market.  In the demo, a fast download is performed.  Without BFQ, the
    download makes the device completely unresponsive.  With BFQ, the
    device remains as responsive as if it was totally idle.
    
    As for the other part of the statement, "...  not ideal for ...  high
    throughput I/O devices", a few days ago I ran benchmarks (on Ubuntu)
    also with one of the fastest consumer-grade NVMe SSDs: a Samsung SSD
    970 PRO.  Results [4] can be summarized as follows.  Throughput with
    BFQ is about the same as with the other I/O schedulers (it couldn't be
    higher, because this kind of drives just wants the scheduler to stay
    as aside as possible, when it comes to throughput).  But, in the
    presence of writes as background workload, start-up times with BFQ are
    at least 16 times as low as with the other I/O schedulers.  In
    absolute terms, gnome-terminal starts in ~1.8 seconds with BFQ, while
    it takes at least 28.7 (!) seconds with the other I/O schedulers.
    Finally, only with BFQ, no frame gets lost in video-playing
    benchmarks.
    
    BFQ then provides other important benefits, such as from 5x to 10X
    throughput boost in multi-client server workloads [5].
    
    So, is there any chance that the outdated/wrong information on your
    wiki page [1] gets updated somehow?  If I may, I'd be glad to update
    it myself, after providing you with all the results you may ask.
    
    In addition, why doesn't Ubuntu too consider switching to BFQ as
    default I/O scheduler, for all drives that BFQ supports (namely all
    drives with a maximum speed not above ~500 KIOPS)?
    
    Looking forward to your feedback,
    Paolo
    
    
  • Should Ubuntu Use The BFQ I/O Scheduler?

    The BFQ I/O scheduler is working out fairly well these days as shown in our benchmarks. The Budget Fair Queueing scheduler supports both throughput and low-latency modes while working particularly well for consumer-grade hardware. Should the Ubuntu desktop be using BFQ by default?

    [...]

    But in addition to wanting to correct that Wiki information, Paolo pops the question of why doesn't Ubuntu switch to BFQ as the default I/O scheduler for supported drives. Though as of yet, no Ubuntu kernel developers have yet commented on the prospect of switching to BFQ.

Devices With Linux Support

Filed under
Hardware
  • Quest Releases KACE SDA & SMA Updates

    The update to 7.0 for KACE Systems Deployment Appliance is primarily about bringing a scope of endpoint management capabilities with new support for Linux devices to the table.

  • Rugged, Kaby Lake transport computer has a 10-port LAN switch with PoE

    Axiomtek’s Linux-ready “tBOX400-510-FL” transportation system has a 7th Gen Intel CPU and a 10-port managed switch with 8x M12-style 10/100Mbps PoE and 2x GbE ports. The rugged system also has 3x mini-PCIe slots and dual swappable SATA drives.

    Axiomtek has launched a fanless, Kaby Lake-U based transportation computer with a choice of power supplies designed for in-vehicle, marine, or railway applications. The rugged tBOX400-510-FL features a Qualcomm-driven, Layer 2 managed PoE switch with support for IP surveillance and video management applications. “Customers can connect IP cameras directly without installing an extra PoE switch, minimizing overall deployment costs and installation space onboard,” stated Axiomtek product manager Sharon Huang.

Software: Open Build Service (OBS) and Spotify 'App'

Filed under
Software
  • Introducing Open Build Service, Version 2.10

    We are pleased to announce the availability of Open Build Service (OBS) version 2.10!

    After more than one year of development, this new version of OBS brings a revamped web user interface, improved support for shipping your software in containers and integrating your package builds with source code management systems like GitLab and Pagure.

  • Spotify’s Snap App Was Outdated, But Now It Isn’t

    I’ll be honest: when Spotify arrived on the Snap store I thought: “hurrah”.

    Hurrah for an easier way to install the music streaming client (no need to futz around adding the Spotify repository like in the past) and hurrah for automatic background updates that ensure I’m always running the latest release.

    At least, that was the theory.

    Alas, the official Spotify for Linux Snap package has not been updated since April of this year.

    “Oh,” I thought, “I guess there hasn’t been an update to the Spotify Linux desktop client since then!”

    But there has — several updates, in fact!

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More in Tux Machines

Red Hat and Fedora Leftovers

  • Building an organization that's always learning: Tips for leaders

    In open organizations, informal learning is critical to success. "Informal learning" accounts for all learning that occurs outside a training program, a classroom, or another formalized instruction setting. Unlike the learning in these formalized learning settings, informal learning is unstructured, personal, and voluntary. As a result, systematic study of it is difficult. But due to the prevalence and importance of informal learning in workplaces, several researchers have called for additional research into the subject—and particularly for the design of instruments to actually measure informal learning. Such instruments could likewise be useful in open organizations hoping to measure and foster informal learning practices among employees.

  • 9 people for sysadmins to follow on Twitter

    While Twitter certainly isn't the most open source platform, the open source community on the social network brings a lot of great minds together on a daily basis. The site, as I see it, also democratizes access to these brilliant minds since we're all just one @ away. Here are nine people whose Twitter accounts are making my pursuit of sysadmin knowledge, and its continued evolution, better. They fall across the spectrum of technology with the one thing they have in common being their passionate, informative, and thoughtful perspective. They share a wealth of knowledge from explaining Linux commands through comics, to applying a PhD's worth of knowledge to making DevOps make sense.

  • Fedora 32 System-Wide Change proposal: x86-64 micro-architecture update
    Fedora currently uses the original K8 micro-architecture (without 3DNow! and other AMD-specific parts) as the baseline....
    
  • Fedora Developers Discuss Raising Base Requirement To AVX2 CPU Support

    An early change being talked about for Fedora 32, due out in the spring of next year, is raising the x86_64 CPU requirements for running Fedora Linux. When initially hearing of this plan, the goal is even more ambitious than I was initially thinking: AVX2. A feature proposal for Fedora 32 would raise the x86_64 base-line for their compiler builds to needing AVX2. Advanced Vector Extensions 2 is Intel Sandy Bridge and newer or AMD Jaguar/Bulldozer and newer. This came as quite a surprise even to myself that Fedora is planning to jump straight from their existing AMD K8 baseline to now AVX2-supportive CPUs.

  • Stable docker CE for Fedora 30 are available!

    Do you use docker? If you are using Fedora 30 then I have good news for you. They officially relesed stable docker CE for Fedora 30, yay! Most of us have been waiting for stable docker since February, OMG! You can check issue #600 how frustrating most of docker users because we don’t have stable release and unable to use testing or nightly release because of missing containerd.io and forced dev to seek alternatives using old repo (F29) or using Podman as workaround.

  • Outreachy FHP week 7: Pytest, UI enhancements, FAS search

    From Outreachy.org: The theme for this week is “Modifying Expectations”. Outreachy mentors and interns start the internship with a specific set of project goals. However, usually those goals need to be modified, and that’s perfectly fine! Delays to projects happen. Maybe your project turned out to be more complicated than you or your mentor anticipated. Maybe you needed to learn some concepts before you could tackle project tasks. Maybe the community documention wasn’t up-to-date or was wrong. These are all perfectly valid reasons for projects to be a bit behind schedule, as long as you’ve been working full-time on the project. In fact, free and open source contributors have to deal with these kinds of issues all the time. Projects often seem simple until you start working on them. Project timelines are ususally a very optimistic view of what could happen if everything goes exactly as planned. It often doesn’t, but people still make optimistic plans. Modifying your project timeline to set more realistic goals is a skill all contributors need to learn. [....] I was a beginner in Django when I started working on this project. Earlier I worked on JavaScript-based framework, and switching to Python was a big change for me. So, it was always learning and implementing on my part. Since Django was new to me, I had to learn it fast, at least the core concept. I found some good resources but they were so detailed that at the end of the document, I would have lost interest in some of the topics. Then I found this tutorial, which turned out to be the perfect platform to have an overall grasp of the widely used python framework. I learned about containers, their importance and concept of virtualization. How Docker can also be used when we want to deploy an application to an environment. Understood the concept behind it, learned the basic commands and how to deal with multiple Docker containers. In the second half of my internship, I improved and wrote tests of the project without having any prior knowledge of the concept at the beginning.

Programming Leftovers

  • Excellent Free Books to Learn Java

    Java is a general-purpose, concurrent, class-based, object-oriented, high-level programming language and computing platform first released by Sun Microsystems in 1995. It is related in some ways to C and C++, in particular with regard to its syntax, and borrows a few ideas from other languages. Java applications are compiled to bytecode that can run on any Java virtual machine (JVM) regardless of computer architecture. Java is designed to be simple enough that many programmers can quickly become proficient in the language. It’s one of the most popular programming languages especially for client-server web applications.

  • GFX-RS Portability 0.7 Released With Vulkan Events, Binding Model Improvements

    The GFX-RS high performance graphics API for the Rust programming language and based on Vulkan while mapping to Metal when on Apple systems is out with a new release. GFX-RS continues to be about being a cross-platform API for Rust that is bindless and high performance while retaining the traits of Vulkan but with back-ends as well for Direct3D 11/12, Metal, and even OpenGL 2 / GLES2.

  • Use the Requests module to directly retrieve the market data

    Hello and welcome back to our cryptocurrency project. In the previous article I had mentioned before that I want to use the cryptocompy module to create our new cryptocurrency project, however, after a closer look at the CriptoCompare API I think we have better used the original API to make the rest call instead of using the wrapper module because the original API seems to provide more returned data type than the one offered by the cryptocompy module.

  • Eli Bendersky: Faster XML stream processing in Go

    XML processing was all the rage 15 years ago; while it's less prominent these days, it's still an important task in some application domains. In this post I'm going to compare the speed of stream-processing huge XML files in Go, Python and C and finish up with a new, minimal module that uses C to accelerate this task for Go. All the code shown throughout this post is available in this Github repository the new Go module is here.

  • How to Use Binder and Python for Repoducible Research

    In this post we will learn how to create a binder so that our data analysis, for instance, can be fully reproduced by other researchers. That is, in this post we will learn how to use binder for reproducible research. In previous posts, we have learned how to carry out data analysis (e.g., ANOVA) and visualization (e.g., Raincloud plots) using Python. The code we have used have been uploaded in the forms of Jupyter Notebooks.

  • Wingware Blog: Introducing Functions and Methods with Refactoring in Wing Pro

    In this issue of Wing Tips we explain how to quickly create new functions and methods out of existing blocks of Python code, using Wing Pro's Extract Method/Function refactoring operation. This is useful whenever you have some existing code that you want to reuse in other places, or in cases where code gets out of hand and needs to be split up to make it more readable, testable, and maintainable. Wing supports extracting functions and methods for any selected code, so long as that code does not contain return or yield statements. In that case automatic extraction is not possible, since Wing cannot determine how the extracted function should be called from or interact with the original code.

  • How to Use Binder and Python for Reproducible Research

    In this post we will learn how to create a binder so that our data analysis, for instance, can be fully reproduced by other researchers. That is, in this post we will learn how to use binder for reproducible research. In previous posts, we have learned how to carry out data analysis (e.g., ANOVA) and visualization (e.g., Raincloud plots) using Python. The code we have used have been uploaded in the forms of Jupyter Notebooks. Although this is great, we also need to make sure that we share our computational environment so our code can be re-run and produce the same output. That is, to have a fully reproducible example, we need a way to capture the different versions of the Python packages we’re using.

  • NumPy arange(): How to Use np.arange()

    NumPy is the fundamental Python library for numerical computing. Its most important type is an array type called ndarray. NumPy offers a lot of array creation routines for different circumstances. arange() is one such function based on numerical ranges. It’s often referred to as np.arange() because np is a widely used abbreviation for NumPy. Creating NumPy arrays is important when you’re working with other Python libraries that rely on them, like SciPy, Pandas, Matplotlib, scikit-learn, and more. NumPy is suitable for creating and working with arrays because it offers useful routines, enables performance boosts, and allows you to write concise code.

  • Cogito, Ergo Sumana: Beautiful Soup is on Tidelift

    I've been doing a tiny bit of consulting for Tidelift for a little over a year now, mainly talking about them to open source maintainers in the Python world and vice versa. (See my October 2018 piece "Tidelift Is Paying Maintainers And, Potentially, Fixing the Economics of an Industry".) And lo, in my household, my spouse Leonard Richardson has signed up as a lifter for Beautiful Soup, his library that helps you with screen-scraping projects.

  • Chris Moffitt: Automated Report Generation with Papermill: Part 1

    This guest post that walks through a great example of using python to automate a report generating process. I think PB Python readers will enjoy learning from this real world example using python, jupyter notebooks, papermill and several other tools.

  • Cryptocurrency user interface set up

    As mentioned above, in this article we will start to create the user interface of our latest cryptocurrency project. Along the path we will also use the CryptoCompare API to retrieve data.

  • Python Snippet 2: Quick Sequence Reversal
  • 10x Evilgineers | Coder Radio 367

    Mike rekindles his youthful love affair with Emacs and we debate what makes a "10x engineer". Plus the latest Play store revolt and some of your feedback.

BlueStar Linux 5.2.1

Today we are looking at BlueStar Linux 5.2.1. This release of BlueStar is an Arch rolling distro and comes with Linux Kernel 5.2.1 and KDE Plasma 5.16.3 and uses about 700MB of ram when idling. Bluestar Linux is a beautiful Arch/KDE distro that works great out of the box and is receiving a lot of love from their very active developer. Read more Direct/video: BlueStar Linux 5.2.1 Run Through

GNU Parallel 20190722 ('Ryugu') released

GNU Parallel 20190722 ('Ryugu') has been released. It is available for download at: http://ftpmirror.gnu.org/parallel/ GNU Parallel is 10 years old next year on 2020-04-22. You are here by invited to a reception on Friday 2020-04-17. Read more