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Ubuntu

Power - Part II of Ubuntu 20.04 LTS Review

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Reviews
Ubuntu

Previously the first part talked about Panorama - the appearance overview of past and current Ubuntu. Now this second part will talk about Power - the technical aspects "how it works" of Ubuntu most notably the installation and add/remove applications and configurations. Briefly, Ubuntu Desktop now transformed into more a mobile alike system similar to Android or iOS. Here you will find the one gigabyte memory load this version, how much the app installations changed, and things important about Ubuntu. Enjoy!

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Ubuntu Will No Longer Track Which Packages Users Install

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Ubuntu

The “popularity-contest” tool that has shipped as part of the standard Ubuntu install since the distro debuted in 2006 is being removed.

What does popcon do? To quote the Ubuntu help page for it...

The stats that popcon gathers is used to help “improve future versions of Ubuntu so that the most popular packages are the ones which are installed automatically for new users.”

Except it’s been a long time since Ubuntu added or removed apps to its default install.

And with Snaps, Flapaks, and PPAs giving developers more direct ways to market to users (not to mention more accurate numbers on how many people use their software) the relative merits of “what’s popular in the repos” is …Well, a touch moot.

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The 5 Best Graphical Backup Tools for Ubuntu and Linux Mint

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Linux
Ubuntu

In this guide, we review the best graphical user interface backup tools for Ubuntu and Linux Mint operating systems. These Linux backup tools are also installable and work on Ubuntu flavors such as Lubuntu, Kubuntu, and Xubuntu and other derivatives such as elementary OS, Zorin OS, and more.

That’s all! The above are the best graphical backup tools for Ubuntu and Linux Mint operating systems. Do you have some thoughts to share? Have your say, via the comment form below.

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Linux Mint drops Ubuntu Snap packages

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Ubuntu

The Linux Mint distribution is based on Debian and Ubuntu, providing over 30,000 packages from these projects. These packages are provided using the well-known APT packaging system used by both upstream distributions. Ubuntu, however, in 2014 started distributing software in parallel to APT using a technology called Snap.

Snap is a self-contained package-deployment system designed to make it easier to manage dependencies of an application in a Linux environment. Developed by Canonical, Snap is designed so that its packages contain all of the specific dependencies a software package needs to run, bundled into a single filesystem image. This allows a software package to run on a system that has otherwise incompatible versions of needed libraries, or even to have two different versions of a single software package with different dependencies easily coexist on a single machine. Essentially, it allows one package to be created per architecture that can run on any common Linux distribution.

The technology solves important package-management problems for Canonical and Ubuntu. It also has a strategic business value, as it allows Canonical-managed software to be installed on a competing distribution. The technology problem Canonical wants to solve is to simplify support for software packages, such as Chromium, across the multiple versions of Ubuntu. Relying strictly on APT requires independent packages to be maintained for each Ubuntu version, since various Ubuntu releases ship with different and potentially incompatible libraries. This represents a large workload that Canonical would rather not deal with, and to which Snap provides an elegant technical solution.

From a business perspective, widespread adoption of Snap as a universal package-distribution technology would put Canonical in a strong position to control Linux software distribution. This fact is not lost by Canonical's competition — Red Hat supports a similar Flatpak technology. Unlike Snap, however, the Flatpak project aims to be an independent community and a "true upstream open source project, dedicated to providing technology and services that can be used by all, with no vendor lock-in."

The problems with Linux Mint came to a head when Ubuntu moved Chromium to Snap distribution in Ubuntu 19.10. On the surface, that isn't a problem in and of itself — the Linux Mint project can always start providing its own Chromium APT packages. The problem was the decision to change the Ubuntu chromium-browser APT package itself upstream in Ubuntu. Previously, that package would simply install Chromium directly. With the change, it would instead install the Snap package-management tools first and then install the Snap equivalent of the Chromium package — without making it clear to the user what was happening.

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Ubuntu MATE for Raspberry Pi

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Ubuntu

Ubuntu MATE 20.04 beta 1 is available for Raspberry Pi Model B 2, 3, 3+ and 4 with separate images for armhf (ARMv7 32-bit) and arm64 (ARMv8 64-bit). We have done what we can to optimise the builds for the Raspberry Pi without sacrificing the full desktop environment Ubuntu MATE provides on PC.

Ubuntu MATE for the Raspberry Pi provides a complete, familiar, desktop environment that can be used for basic desktop computing. It is also of interest to makers and device hackers who want to target Ubuntu for their projects. You can prototype homebrew ARMv7 or ARMv8 based IoT devices in a comfortable desktop environment, including building and testing your apps as snaps. The full Ubuntu archive is available to you.

For hobbyist projects, you can stick with Ubuntu MATE for “deployment”. But, if you have something more professional in mind then the applications and snaps you’ve prototyped with Ubuntu MATE can be used with Ubuntu Server or Ubuntu Core. You might want to check out the Ubuntu Appliance Portfolio too.

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Also: Ubuntu MATE 20.04 Beta Release Optimized for Raspberry Pi 4

Brume-W Pocket-Sized Wireless Gateway Runs OpenWrt or Ubuntu (Crowdfunding)

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Ubuntu

GL.iNet Brume-W (GL-MV1000W) is a “pocket-sized wireless gateway for edge computing” that supports high-speed VPN up to 280Mbps with WireGuard, AdGuard ad-blocking software (AdGuard), and Tor.

The device features three Gigabit Ethernet ports and built-in 2.4 GHz WiFi 4 connectivity, but it also supports Alfa AWUS036AC and AWUS036ACS USB WiFf USB dongles for users wanting dual-band WiFi 5 (AC) networking. The router ships with OpenWrt pre-installed, but also supports Ubuntu.

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CentOS Vs. Ubuntu Server : Everything You Need to Know

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Red Hat
Server
Ubuntu

Choosing the perfect Linux distribution to set up your server can be confusing since Linux provides a limitless number of options. The main reason behind these many distributions is because Linux is an opensource platform. Anybody with the required skills can contribute to the development or build and release their distribution. Currently, there are more than 600 Linux Desktop and Server distributions in the market.

Despite these many distributions, there are two principal Linux server distributions dominant in the market – CentOS and Ubuntu Server. Both are excellent choices for a server, and they both have their advantages over the other.

In this CentOS vs. Ubuntu comparison, we will look at the key features of both operating systems to guide you in choosing the right distributions for your Virtual Private Server.

Before shedding light on these two well-matched opponents’ features and services, let’s have a brief look at each of them.

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Robotics Recap: Learning, Programming & Snapping ROS 2

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Hardware
Ubuntu

Robotics@Canonical puts a strong focus on the migration from ROS to ROS 2. ROS 2 benefits from many improvements, especially robot security. Our goal is to make it easy for you to transition to ROS 2, whether you’re completely new to ROS or a seasoned engineer retooling for a new environment. Your new platform should be secure-by-default, and we expect you’ll need to pivot between different environments as you migrate from ROS to ROS 2.

Along the way we’ve encountered some friction points, some mild surprises, and some opportunities to better leverage existing tools. Whenever that happened we tried to fix them and share our experiences so you didn’t run into the same problems! This has resulted in blog posts and videos in three key focus areas: getting started with ROS 2, software development in ROS 2, and building snaps for ROS. Let’s recap some of our recent output.

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This Ubuntu-Based Linux OS Looks Shockingly Similar To Windows 10

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OS
Linux
Ubuntu

If imitation is the sincerest form of flattery, I can confidently say that an Ubuntu-based Linux OS called “WindowsFx” really admires the appearance of Microsoft’s Windows 10. In fact, this distribution goes to such painstakingly detailed lengths to emulate the look and feel of Windows 10, I’m surprised Microsoft hasn’t called in the army of lawyers to shut it down. But is WindowsFx a comfortable gateway into Linux for Windows users, or merely an Ubuntu clone with a clever Windows skin?

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Servers: Kubernetes, MicroK8s and Ubuntu

Filed under
Server
Ubuntu
  • What’s up with the Kubernetes ecosystem

    This week’s acquisition of Rancher Labs by the veteran enterprise Linux firm SUSE neatly illustrates the growing momentum of container-based application deployment. It also underlines the importance of Kubernetes as the orchestration tool of choice for managing all those containers.

    So, what does this latest move mean for the broader Kubernetes ecosystem? When containers first garnered corporate attention six or seven years ago, Docker and its tools were the centre of attention. But the focus soon shifted to management frameworks capable of automating the deployment and scaling of containers, and Kubernetes, developed by Google from technology used in its cloud platform, quickly won out.

    Like many open source tools, Kubernetes has its share of rough edges and does not necessarily provide all the capabilities that users need to build a functioning container-based infrastructure. Companies such as Rancher sprang forth to provide a complete software stack built around Kubernetes for those who didn’t want to build it all themselves.

  • MicroK8s HA tech preview is now available
  • Ubuntu Support of AWS Graviton2 Instances
  • Ubuntu Support of AWS Graviton2 Instances

    Ubuntu is the industry-leading operating system for use in the cloud. Every day millions of Ubuntu instances are launched in private and public clouds around the world. Canonical takes pride in offering support for the latest cloud features and functionality.

    As of today, all Ubuntu Amazon Web Services (AWS) Marketplace listings are now updated to include support for the new Graviton2 instance types. Graviton2 is Amazon’s next-generation ARM processor delivering increased performance at a lower cost. This

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More in Tux Machines

today's howtos

today's leftovers

  • Want Social Justice? The Free Software Movement Fights For Everyone!

    Everyone wants freedom but most people have no idea just how enslaved they have become to their computing devices and the proprietary software that controls those devices. The Free Software Movement aims to spread awareness of this issue and to advocate for the use of freedom-respecting software ("free software").

  • Participate in Hacktoberfest, Help Develop Contributions

    The month-long, virtual-festival event that celebrates open source contributions, Hacktoberfest, is coming soon and members of the openSUSE community can make a difference. The event that is in its seventh year and run by Digital Ocean and DEV encourages people to make their first contributions to open source projects. The event is for developers, designers who contribute artwork, people who can contribute to documentation,and more. As the event brings more awareness to open-source projects and encourages contributions that benefit communities, having developers and community members available to help people who want to contribute can be beneficial to the project.

  • Are universities spending enough on cybersecurity? [iophk: Windows TCO]

    Such attacks “will absolutely continue”, said Mark Ford, who leads higher education risk and financial advisory services for the audit firm Deloitte. As higher education becomes known as an “easy target”, this increasingly “attracts the bad guys”, he explained.

    The threat comes not just from criminals seeking money. Universities now house arguably the most valuable secrets on earth – plans for a coronavirus vaccine – putting them in the sights of state-backed [cr]ackers. In July, UK, US and Canadian intelligence services warned that Russian groups were attempting to target Covid-19 vaccine research and development.

    This raises the question: are universities doing enough to defend themselves against [cr]acking?

  • vScaler Integrates SLURM with GigaIO FabreX for Elastic HPC Cloud Device Scaling
  • vScaler Announces SLURM integration with GigaIO FabreX

    The additional integration of the SLURM workload manager, an open-source job scheduler for Linux and Unix-like kernels, means that vScaler Cloud users can request traditional resources like memory and compute cores to be available for jobs.

  • Profiling slow-running queries in Amazon DocumentDB (with MongoDB compatibility)

    Amazon DocumentDB (with MongoDB compatibility) is a fast, scalable, highly available, and fully managed document database service that supports MongoDB workloads. You can use the same MongoDB 3.6 application code, drivers, and tools to run, manage, and scale workloads on Amazon DocumentDB without having to worry about managing the underlying infrastructure. As a document database, Amazon DocumentDB makes it easy to store, query, and index JSON data. AWS built Amazon DocumentDB to uniquely solve your challenges around availability, performance, reliability, durability, scalability, backup, and more. In doing so, we built several tools, like the profiler, to help you run analyze your workload on Amazon DocumentDB. The profiler gives you the ability to log the time and details of slow-running operations on your cluster. In this post, we show you how to use the profiler in Amazon DocumentDB to analyze slow-running queries to identify bottlenecks and improve individual query performance and overall cluster performance.

Programming Leftovers

  • Self-publishing and the 2nd edition of Ansible for DevOps

    Five years, 834 commits, and 24 major revisions later, I've just published the 2nd edition of Ansible for DevOps, a book which has now sold over 60,000 copies and spawned a popular free Ansible 101 video series on YouTube.

  • Open Standards Are Simple

    If you want to create a truly open standard, you _need_ to make it simple.

    There are no exceptions to this rule. When a standard becomes harder to fully implement than what your average motivated programmer can do in two months (max!), it _shouldn't_ be considered "open" anymore.

    Why?

  • In Which COVID-19 Misinformation Leads To A Bunch of Graphs Made With Rust

    A funny — and by funny, I mean sad — thing has happened. Recently the Kansas Department of Health and Environment (KDHE) has been analyzing data from the patchwork implementation of mask requirements in Kansas. They came to a conclusion that shouldn’t be surprising to anyone: masks help. They published a chart showing this. A right-wing propaganda publication got ahold of this, and claimed the numbers were “doctored” because there were two-different Y-axes. I set about to analyze the data myself from public sources, and produced graphs of various kinds using a single Y-axis and supporting the idea that the graphs were not, in fact, doctored. Here’s one graph that’s showing that: In order to do that, I had imported COVID-19 data from various public sources. Many states in the US are large enough to have significant variation in COVID-19 conditions, and many of the source people look at don’t show county-level data over time. I wanted to do that.

  • Basics of Working with the SQLite Database in Python

    A database is one of the most useful and popular files for storing data; they can be used to store any kind of data, including text, numbers, images, binary data, files, etc. SQLite is a relational database management system based on the SQL language. It is a C library, and it provides an API to work with other programming languages, including Python. It does not require a separate server process to be run as needed in large database engines like MySQL and Postgresql. It is swift and lightweight, and the entire database is stored in a single disk file, which makes it portable like CSV or other data storage files. Many applications use SQLite for internal data storage, mainly in environments like mobile devices or small applications.

  • Perl 7 By Default

    Perl 7 has been announced as the next direction of Perl development. My previous blog post explored at a high level the risks and benefits of the announced direction, as well as those of a more incremental proposal. The primary and critical difference between these two approaches is the decision to change interpreter defaults in an incompatible manner. I would like to explore each of the arguments presented for this design choice.

  • CY's Recent Submission for PWC(068-073)

    Skipped blogging on Perl Weekly Challenge(PWC) for a few weeks!

  • SSH vs. kubectl exec

    There’s a lot of similarities between SSH and kubectl, and both have their strengths and weaknesses. While SSH is architecturally set in stone, higher-level software can learn a thing or two from Kubernetes about centralized configuration when managing a fleet of machines. See Teleport for an example of how this can be done. SSH could also borrow the credential management approach from kubeconfigs (i.e. “put all my client creds and server info into one file that I can copy around”).

    kubectl could improve on its non-shell features like port forwarding and file transfer. It’s raw data throughput is also lacking, which precludes it from becoming a transport-layer protocol like SSH. In practice, these tools are complementary and get used for different tasks, it’s not “one or the other”. I hope this post helped you learn something new about both!

  • Can we do better than our C compiler?

    Today, I wanted to become a C compiler. I added a hand-compiled assembly version of echo from our previous coding exercise and added a new make target, make asm, that will assemble it. Let's look at our hand-compiled assembly and compare it to our C compiler and ask whether or not it was worth it.

  • Benign Data Races Considered Harmful

    The series of posts about so called benign data races stirred a lot of controversy and led to numerous discussions at the startup I was working at called Corensic. Two bastions formed, one claiming that no data race was benign, and the other claiming that data races were essential for performance. Then it turned out that we couldn’t even agree on the definition of a data race. In particular, the C++11 definition seemed to deviate from the established notions.

  • Micronaut 2.0 Full-Stack Java Framework Released

    The Micronaut framework uses Java's annotation processors, which work with any JVM language that supports them, as well as an HTTP server and client built on the Netty non-blocking I/O client server framework. To provide a programming model similar to Spring and Grails, these annotation processors pre-compile the required metadata to perform DI, define AOP proxies, and configure applications to run in a low-memory environment, the company says. Many of the APIs in Micronaut were "heavily inspired" by Spring and Grails," which was by design and aids in bringing developers up to speed quickly," the company says.

  • Understanding computer vision and AI, part 1

    An active area in the field of computer vision is object detection, where the goal is to not only localize objects of interest within an image but also assign a label to each of these objects of interest. Considerable recent successes in the area of object detection stem from modern advances in deep learning, particularly leveraging deep convolutional neural networks. Much of the initial focus was on improving accuracy, leading to increasingly more complex object detection networks such as SSD, R-CNN, Mask R-CNN, and other extended variants of these networks. While such networks demonstrated state-of-the-art object detection performance, they were very challenging, if not impossible, to deploy on edge and mobile devices due to computational and memory constraints. This greatly limits the widespread adoption for a wide range of applications such as robotics, video surveillance, autonomous driving where local embedded processing is required. [...] Model Evaluation is an integral part of the model development process. It helps to find the best model that represents our data and how well the chosen model performs on unseen data. To improve the model we tune the hyper-parameters; parameter that determines the network structure (number of neurons in the network, network activation functions) or training parameter (gradient descent learning rate, adding parameters like momentum in the weight update rule). Tuning those parameters is an inevitable and important step to obtain better performance. Methods like GridSearch and RandomizedSearch can be used to navigate through the different parameters.

  • Qt Design Studio 1.6 Beta released

    We are happy to announce the beta release of Qt Design Studio 1.6 Qt Design Studio is a UI design and development tool that enables designers and developers to rapidly prototype and develop complex UIs. Both designers and developers use Qt Design Studio and this makes collaboration between the two a lot simpler and more streamlined. To get an impression, you should watch this video.

Raspberry Pi Projects and News