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Screenshots/Screencasts: 10 GNU/Linux Distros (Screenshots) and New Screencast/Video of Endeavour OS 2019.08.17

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GNU
Linux
  • 10 Linux distros: From different to dangerous

    One of the great benefits of Linux is the ability to roll your own. Throughout the years, individuals, organizations, and even nation states have done just that. In this gallery, we're going to showcase some of those distros. Be careful, though. You may not want to load these, or if you do, put them in isolated VMs. We're not kidding when we say they could be dangerous.

  • Endeavour OS 2019.08.17 Run Through

    In this video, we are looking at Endeavour OS 2019.08.17.

Google brings Linux app support to some older Chromebooks (including Chromebook Pixel 2015)

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Linux
Google

Chrome OS started out as a browser-based operating system that could run web apps only. Eventually Google added support for Android apps, and then for Linux apps, making Chromebooks more useful as general-purpose laptops.

But while most new Chromebooks feature out-of-the-box support for Android and Linux apps, many older models do not… and it looked like they never would.

It turns out that may not be true after all: 9to5Google reports that Google seems to be testing an update that would bring Linux app support to the 2015 Chromebook Pixel, along with a number of other models released that year.

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Devices With Linux

Filed under
Linux
Hardware

Linux Candy: WallGen – image generator tool

Filed under
GNU
Linux
Software

Who loves eye candy? Don’t be shy — you can raise both hands!!

Linux Candy is a new series of articles covering interesting eye candy software. We’re only going to feature open-source software in this series.

I’m not going to harp on about the tired proverb “All work and no play makes Jack a dull boy”. But there’s a certain element of truth here. If you spend all day coding neural networks, mastering a new programming language, sit in meetings feeling bored witless, you’ll need some relief at the end of the day. And what better way by making your desktop environment a bit more memorable.

Let’s start our candy adventure with WallGen. It’s a small command-line utility that generates HQ poly wallpapers with only a few text arguments for inputs. Depending on these arguments, you can create shape-based patterns, randomly filled surfaces, and even image-based patterns.

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An introduction to bpftrace for Linux

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Linux

Bpftrace is a new open source tracer for Linux for analyzing production performance problems and troubleshooting software. Its users and contributors include Netflix, Facebook, Red Hat, Shopify, and others, and it was created by Alastair Robertson, a talented UK-based developer who has won various coding competitions.

Linux already has many performance tools, but they are often counter-based and have limited visibility. For example, iostat(1) or a monitoring agent may tell you your average disk latency, but not the distribution of this latency. Distributions can reveal multiple modes or outliers, either of which may be the real cause of your performance problems. Bpftrace is suited for this kind of analysis: decomposing metrics into distributions or per-event logs and creating new metrics for visibility into blind spots.

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Review: AcademiX GNU/Linux 2.2

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GNU
Linux
Reviews

What sets AcademiX apart from other distributions is the EDU software manager. This package manager provides curated lists of educational software, which are grouped by subject and by age range. This package manager makes finding educational software really easy. There is software for astronomy, biology, geography, foreign languages, and many other subjects. While there are gaps in the availability of applications covering various subjects, that is a gap in the broader open source application ecosystem, not something specific to AcademiX. While some of the rough edges I noted with the installation process and the desktop customization make me a hesitant to recommend AcademiX to new Linux users, Educational Technology professionals should perhaps try out AcademiX just to use the EDU package manager to explore various open source applications.

While installing and updating software was easy and basically the same experience as any other modern, Debian-based distribution, the fact that some of the packages come from servers in Romania means that some package downloads can be much slower than downloading from the world-wide network of Debian mirrors. For individual packages and small collections of packages this is not too noticeable, but it is still an issue. The frustrating part is the fact that the speeds are not consistent. Sometimes I was downloading at only 40kbps, but other times it was much faster. I experienced the same issue when trying to download the ISO. One download took about 20 minutes for the 1.7GB image but some other attempts took 4 hours.

Final thoughts

AcademiX GNU/Linux is an interesting distribution, but it has some rough edges that need to be cleaned up. Honestly, I really, really wanted to like this distribution (good distributions aimed at the educational market are always needed), but found it to be merely okay. AcademiX has a lot of potential, but it is just not there yet. DebianEdu/Skolelinux is far more polished while serving almost the exact same niche. However, if the AcademiX team cleans up some of the issues I noted above, especially the installer issues, I think future versions of AcademiX might turn out to be worthwhile. The EDU software installer is well organized and aids in discovering educational software, so that is one solid advantage AcademiX offers, but overall the distribution needs more work and polish before I could move it from "this distribution is okay" to "you should give this distribution a try".

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Linux 5.3-rc5

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Linux

Another week, another -rc.

It's been calm, and nothing here stands out, except perhaps some of
the VM noise where we un-reverted some changes wrt node-local vs
hugepage allocations.

The rest is the usual driver fixes (usb, sound, nvme, habanalabs,
rdma..) some arch updates (arm64 and x86) along with some filesystem
fixes (afs and btrfs).

But all of it is really quite small.

Read more

Also: Linux 5.3-rc5 Released Following A Calm Week

The ClockworkPi GameShell is a super fun DIY spin on portable gaming

Filed under
GNU
Linux
Gaming
Gadgets

Portable consoles are hardly new, and thanks to the Switch, they’re basically the most popular gaming devices in the world. But ClockworkPi’s GameShell is something totally unique, and entirely refreshing when it comes to gaming on the go. This clever DIY console kit provides everything you need to assemble your own pocket gaming machine at home, running Linux-based open-source software and using an open-source hardware design that welcomes future customization.

The GameShell is the result of a successful Kickstarter campaign, which began shipping to its backers last year and is now available to buy either direct from the company or from Amazon. The $159.99 ( on sale for $139.99 as of this writing) includes everything you need to build the console, like the ClockworkPi quad-core Cortex A7 motherboard with integrated Wi-Fi, Bluetooth and 1GB of DDR3 RAM — but it comes unassembled.

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Linux 5.3 Kernel Yielding The Best Performance Yet For AMD EPYC "Rome" CPU Performance

Filed under
Graphics/Benchmarks
Linux

Among many different Linux/open-source benchmarks being worked on for the AMD EPYC "Rome" processors now that our initial launch benchmarks are out of the way are Linux distribution comparisons, checking out the BSD compatibility, and more. Some tests I wrapped up this weekend were seeing how recent Linux kernel releases perform on the AMD EPYC 7742 64-core / 128-thread processors.

For some weekend analysis, here are benchmarks of Linux 4.18 through Linux 5.3 in its current development form. All tests were done on the same AMD EPYC 7742 2P server running Ubuntu 19.04 and using the latest kernels in each series via the Ubuntu Mainline Kernel PPA.

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Neptune 6.0 Released, Which is based on Debian 10 (Buster)

Filed under
GNU
Linux
Debian

Leszek has pleased to announce the release of the new stable release of Neptune 6.0 on 1th Aug, 2019.

It’s first stable release of Neptune 6.0 based on Debian 10 “Buster”, featuring the KDE Plasma desktop with the typical Neptune tweaks and configurations.

The base of the system is Linux Kernel in version 4.19.37 which provides the necessary hardware support.

Plasma 5.14.5 features the stable and flexible KDE made desktop that is loved by millions.

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More in Tux Machines

Software, HowTos and Storage

  • Pause Music When Locking The Screen And Resume On Unlock For Spotify, Rhythmbox, Others

    When you lock your computer screen (without suspending the system), most desktop audio players continue playback in the background, sometimes not emitting any sound ¹. Due to this you may unintentionally skip parts of podcasts or songs in a playlist, etc. Enter pause-on-lock, a Bash script that pauses your music player when you lock the screen and resumes playback once the screen is unlocked. pause-on-lock works on Unity, GNOME, Cinnamon and MATE desktop environments, and by default it supports Spotify and Rhythmbox. With the help of playerctl (a command line controller for controlling media players that support the MPRIS D-Bus interface), this script can extend its supported music players to many others, including Audacious, VLC, Cmus, and others.

  • Easy Way to Screen Mirroring Android on Ubuntu!

    Screen Mirroring is one of the features found on smartphones, one of which is on Android. This feature serves to display the smartphone to a computer. This is very useful for example when used for demo applications that you make, or maybe for other things related to smartphones. In Ubuntu, we can do screen mirroring with applications available on Android, for example is AirDroid which can be used for screen mirroring through a browser. But I feel less optimal when using this instant method. Because there is a lag between activity on the smartphone and on the monitor screen on the computer, and the results are less than optimal. What might be the cause because it is opened through a browser and uses wi-fi? (Personal question). I am looking for another application for screen mirroring on Ubuntu, and one of the very good applications is Scrcpy. This application can be used for screen mirroring without a root device.

  • Command line quick tips: Searching with grep
  • How to Install Cezerin on Debian 9
  • How to Create a Bootable USB Stick from the Ubuntu Terminal
  • How to Install Git on Debian 10
  • How to Copy/Move a Docker Container to Another Host
  • Six practical use cases for Nmap
  • The Next Stage of Flash Storage: Computational Storage
  • NAS upgrade

    At some point in the future I hope to spend a little bit of time on the software side of things, as some of the features of my set up are no longer working as they should: I can't remote-decrypt the main disk via SSH on boot, and the first run of any backup fails due to some kind of race condition in the systemd unit dependencies. (The first attempt does not correctly mount the backup partition; the second attempt always succeeds).

  • Storage Concepts And Technologies Explained In Detail

Fedora: Dropping i686 and Flock Reports

  • Approved: Fedora 31 To Drop i686 Everything/Modular Repositories

    The month-old proposal for the upcoming Fedora 31 Linux distribution release to stop with their i686 repositories for Everything and Modules was voted on today by the Fedora Engineering and Steering Committee. The FESCo group gave their formal approval today for permitting these i686 repositories to be removed beginning with Fedora 31. This also goes in-step with Fedora 31 having already decided to stop with their i686 kernel builds.

  • Living my best 4 days: Flock to Fedora 2019

    Months of waiting came to an end and finally, it was time to meet people with whom I have been working for the last 4 months, being on the other side of the screen. Things seemed different when our last Wednesday conference call ended with “Meet you soon” instead of a “Good Day”. The excitement of attending Flock to Fedora, was not only because the virtual interaction is turning to the real meeting but also, it was my first ever International trip. With approaching the 6th of August, the fear of travelling solo was getting on the peak, and at one moment I started questioning if all the trouble I underwent during last month was even worth it. But the time I met Shraddha(another intern working on the same project)at Bangalore airport, we happened to click so much at our first conversation that it was certain that at least my journey will not be me, and my headphones all the time. Since I reached Budapest a day before when everyone arrived, I got a handful of time discovering places, getting to know their culture and try on things we never tried before. The excitement of being at such a beautiful place did not make me realise that I was sleep-deprived, I had a jet lag of 4 hours and I was hungry. I spent the entire day roaming the streets, enjoying a breath of fresh air and exploring the city and ways of commute as well. Next day we shifted to the hotel that was booked for us and where the conference will be held. The ambience of the whole place was really nice and we met other fellow attendees at the conference.

  • rpminspect Presentation at Flock 2019

    Flock in Budapest was a great event. There were a lot of talks I wanted to attend, but could not make it to all of them. I did give one talk on my project called rpminspect. rpminspect is a project I started as a replacement for an internal Red Hat tool. I am working on integrating it in to the build workflow for Fedora but also allow package maintainers to use it locally as a build linter of sorts. Here is a link to the presentation I gave. I think there is video, but I am not sure where those are.

Security: Patches, IPFire 2.23 Core Update 135, Kaspersky in the Middle

  • Security updates for Monday

    Security updates have been issued by CentOS (kernel and openssl), Debian (ffmpeg, golang-1.11, imagemagick, kde4libs, openldap, and python3.4), Fedora (gradle, hostapd, kdelibs3, and mgetty), Gentoo (adobe-flash, hostapd, mariadb, patch, thunderbird, and vlc), Mageia (elfutils, mariadb, mythtv, postgresql, and redis), openSUSE (chromium, kernel, LibreOffice, and zypper, libzypp and libsolv), Oracle (ghostscript), Red Hat (rh-php71-php), SUSE (bzip2, evince, firefox, glib2, glibc, java-1_8_0-openjdk, polkit, postgresql10, python3, and squid), and Ubuntu (firefox).

  • IPFire 2.23 - Core Update 135 is ready for testing

    after a little break with many things to fight, we are back with a brand new Core Update which is packed with various bug fixes and cleanup of a lot of code.

  • Wladimir Palant: Kaspersky in the Middle - what could possibly go wrong?

    Roughly a decade ago I read an article that asked antivirus vendors to stop intercepting encrypted HTTPS connections, this practice actively hurting security and privacy. As you can certainly imagine, antivirus vendors agreed with the sensible argument and today no reasonable antivirus product would even consider intercepting HTTPS traffic. Just kidding… Of course they kept going, and so two years ago a study was published detailing the security issues introduced by interception of HTTPS connections. Google and Mozilla once again urged antivirus vendors to stop. Surely this time it worked? Of course not. So when I decided to look into Kaspersky Internet Security in December last year, I found it breaking up HTTPS connections so that it would get between the server and your browser in order to “protect” you. Expecting some deeply technical details about HTTPS protocol misimplementations now? Don’t worry, I don’t know enough myself to inspect Kaspersky software on this level. The vulnerabilities I found were far more mundane.

Replicating Particle Collisions at CERN with Kubeflow

This is where Kubeflow comes in. They started by training their 3DGAN on an on-prem OpenStack cluster with 4 GPUs. To verify that they were not introducing overhead by using Kubeflow, they ran training first with native containers, then on Kubernetes, and finally on Kubeflow using the MPI operator. They then moved to an Exoscale cluster with 32 GPUs and ran the same experiments, recording only negligible performance overhead. This was enough to convince them that they had discovered a flexible, versatile means of deploying their models to a wide variety of physical environments. Beyond the portability that they gained from Kubeflow, they were especially pleased with how straightforward it was to run their code. As part of the infrastructure team, Ricardo plugged Sofia’s existing Docker image into Kubeflow’s MPI operator. Ricardo gave Sofia all the credit for building a scalable model, whereas Sofia credited Ricardo for scaling her team’s model. Thanks to components like the MPI operator, Sofia’s team can focus on building better models and Ricardo can empower other physicists to scale their own models. Read more Also: Issue #2019.08.19 – Kubeflow at CERN