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Kmdr – Display CLI Commands Explanation In Terminal

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Software

A while ago, we wrote about ExplainShell, a web-based tool to learn what each part of a Linux command does. It divides the complex and lengthy Linux commands into multiple parts and gives explanation for each part. Using this tool, a Linux newbie can learn about various command line parameters and options without having to refer man pages. However, It will only help you to learn Linux commands. But what if you want to learn other CLI commands, for example Python? You won’t find explanation of Python commands in ExplainShell. No worries! Today, I stumbled upon a similar tool named Kmdr that provides CLI commands explanation for hundreds of programs. It helps you to easily learn CLI commands without leaving the terminal and without having to go through lengthy man pages. Not just Linux commands, Kmdr provides explanation for a lot of CLI commands including ansible, conda, docker, git, go, kubectl, mongo, mysql, npm, ruby gems, vagrant and hundreds of other programs such as those built into bash.

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Samba 4.11

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Software
  • Samba 4.11.0 Available for Download
    Samba 4.11 has changed how the AD database is stored on disk. AD users should
    not really be affected by this change when upgrading to 4.11. However, AD
    users should be extremely careful if they need to downgrade from Samba 4.11 to
    an older release.
    
    Samba 4.11 maintains database compatibility with older Samba releases. The
    database will automatically get rewritten in the new 4.11 format when you
    first start the upgraded samba executable.
    
    However, when downgrading from 4.11 you will need to manually downgrade the AD
    database yourself. Note that you will need to do this step before you install
    the downgraded Samba packages. For more details, see:
    https://wiki.samba.org/index.php/Downgrading_an_Active_Directory_DC
    
    When either upgrading or downgrading, users should also avoid making any
    database modifications between installing the new Samba packages and starting
    the samba executable.
    
  • Samba 4.11 Released With Much Better Scalability While Disabling SMB1 By Default

    Samba 4.11 is out as the latest big feature update to this SMB/CIFS/AD implementation for offering better Windows interoperability with Linux and other platforms. The changes in Samba 4.11 are aplenty that we are a bit surprised it wasn't called Samba 5.0.

    Perhaps most exciting is Samba 4.11 having big scalability improvements to the point that it should be able to scale to 100,000+ users.

Best Essential Apps for Linux 2019

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Software

You might be a beginner looking to explore Linux and you are at a loss of what Apps you should essentially be using. So what are the best essential Apps for Linux? In this guide, we have put together a list of what we would consider as the most necessary applications that you should have in your Linux system to have a wholesome experience.

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Software: Lifeograph, LabPlot and LibreOffice

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KDE
LibO
Software
  • Lifeograph is an encrypted journal application for Windows, Linux and Android

    Keeping a journal is a nice way to reflect upon oneself. It can help you become a better person, nurture good habits, can be used for research, making budgets, make health related notes, or jot down anything else that you may want to keep a record of.

    When it comes to a diary application on computers, there aren't a lot of options. RedNotebook is probably the best one I have used. I wanted something better and that's how I stumbled across Lifeograph.

  • Chocolatey package for LabPlot available

    While we’re spending quite some time now finalizing the next release of LabPlot which will be announced soon, we continue getting feedback from our users and we try to incorporate as much as possible into the upcoming release.

    This feedback usually consists of different discussions around the existing features in LabPlot or features that need to be added in near future, around bugs, etc. Recently we’ve got a somewhat different feedback informing us about the availability of a Chocolatey package for LabPlot.

  • LineStyle Extension for LibO

    I update the LineStyles for LibreOffice for the 6.4 release but in addition I made an Extension for all users how like to have > 20 different predefined LineStyles.

  • BPMN Shapes for LibreOffice

    Two months ago I post my todo list for LibreOffice 6.4 and I my work is already available via LibreOffice extensions.

Software: Zotero, PulseCaster and Qt Port of SFXR

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Software
  • Zotero and LibreOffice

    If you’re working with LibreOffice and need to create a bibliography, this software makes it simple to manage your citations.

    You can tell how few people use LibreOffice’s Bibliography Database by the fact that a bug that would take 10 minutes to fix has survived since 2002. Instead, those who need bibliographies or citations rely on other software such as Zotero, which can be integrated into LibreOffice with an extension.

    That robust bug is that the Citation Format in the database table is called the Short Name in the input fields. Even more confusing, the examples give an arbitrary name, when to work with the citation insertion tool in Insert | Table of Contents and Index | Insert Bibliography Entry, it should in a standard form, such as (Byfield: 2016) for the MLA format. Add the fact that a single database is used for all files – an absurdity in these memory-rich days – and the neglect of the Bibliography Database is completely understandable.

  • PulseCaster 0.9 released!

    For starters, PulseCaster is now ported to Python 3. I used Python 3.6 and Python 3.7 to do the porting. Nothing in the code should be particular to either version, though. But you’ll need to have Python 3 installed to use it, as most Linux bistros do these days.

    Another enhancement is that PulseCaster now relies on the excellent pulsectl library for Python, by George Filipkin and Mike Kazantsev. Hats off to them for doing a great job, which allowed me to remove many, many lines of code from this release.

    Also, due the use of PyGObject3 in this release, there are numerous improvements that make it easier for me to hack on. Silly issues with the GLib mainloop and other entrance/exit stupidity are hopefully a bit better now.

    Also, the code for dealing with temporary files is now a bit less ugly. I still want to do more work on the overall design and interface, and have ideas. I’ve gotten way better at time management since the last series of releases and hope to do some of this over the USA holiday season this late fall and winter (but no promises).

  • SFXR Qt 1.3.0

    I just released version 1.3.0 of SFXR Qt, my Qt port of the SFXR sound effect generator.

Flathub vs. Snap Store: Which App Store Should You Use?

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Software

Linux package management has come a long way from the nightmare it used to be. Still, the package managers provided by distributions aren’t always perfect. The Snap and Flatpak formats have made it much easier to install software no matter what distro you’re running.

Both Snap and Flatpak files are often available on a given app’s website, but both of these formats have their own centralized marketplaces. Which one is right for you? It’s not an easy question to answer.

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cmus – free terminal-based audio player

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Software

It took me a few years to appreciate console-based software. Repairing a broken system using the ubiquitous vi text editor was a turning point in my Linux journey. Now I spend a lot of time at the terminal, and listening to music. Best combine the two!

When it comes to console-based music software, I really admire musikcube, a wonderful audio engine, library, player and server written in C++.

This review looks at an alternative to musikcube. It’s called cmus. It shares many similarities with musikcube. Both are designed to run on a text-only user interface, reducing the resources required to run the application.

cmus is written in C.

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Also: Rclone Browser Fork With Fixes And Enhancements

New WireGuard Snapshot Offers Better Compatibility With Distributions/Kernels

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GNU
Linux
Software
Security

WireGuard sadly isn't slated for the now-open Linux 5.4 merge window, but lead developer Jason Donenfeld has put out a new development snapshot of this open-source secure VPN tunnel.

Coming barely two weeks since the previous WireGuard snapshot, this newest development release isn't too heavy on the changes but the focus is on better portability/compatibility.

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Linux Shell Roundup: 15 Most Popular Open Source Linux Shells

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Software

Unix systems have captivated the world since its inception in the 70s. One of the fundamental features that helped Linux and BSD distributions in securing their current stature is the Linux shell. The shell is one of the essential tools for many Linux aficionados due to its immense power and diverse applications. It is a command-line interface to your operating system, which allows you to perform any kind of operation depending on your criteria. Moreover, Linux shells are not just an interface but also a full-fledged scripting language with its own set of syntax and semantics.

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Also: MusicBrainz Picard 2.2 Released with Built-in Media Player

digiKam 6.3.0 is released

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KDE
Software

We received a lot of excellent user feedback after publishing the third digiKam 6 release in August 2019. We are now proud to briefly announce the new digiKam 6.3.0, a maintenance version which consolidates this feedback and acts as an important phase of this 3-year-old project.

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More in Tux Machines

OSS: Cisco Openwashing, GitLab Funding, Amazon Openwashing, Chrome OS Talk and More Talks

  • Why Open Source continues to be the foundation for modern IT

    Open source technology is no longer an outlier in the modern world, it's the foundation for development and collaboration. Sitting at the base of the open source movement is the Linux Foundation, which despite having the name Linux in its title, is about much more than just Linux and today is comprised of multiple foundations, each seeking to advance open source technology and development processes. At the recent Open Source Summit North America event held in San Diego, the width and breadth of open source was discussed ranging from gaming to networking, to the movie business ,to initiatives that can literally help save humanity. "The cool thing is that no matter whether it's networking, Linux kernel projects, the Cloud Native Computing Foundation projects like Kubernetes, or the film industry with the Academy Software Foundation (ASWF), you know open source is really pushing innovation beyond software and into all sorts of different areas," Jim Zemlin, executive director of the Linux Foundation said during his keynote address.

  • GitLab Inhales $268M Series E, Valuation Hits $2.75B

    GitLab raised a substantial $268 million in a Series E funding round that was more than doubled what the firm had raised across all of its previous funding rounds and pushed its valuation to $2.75 billion. It also bolsters the company’s coffers as it battles in an increasingly competitive DevOps space. GitLab CEO Sid Sijbrandij said in an email to SDxCentral that the new Series E funds will help the company continue to move on its goal of providing a single application to support quicker delivery of software. It claims more than 100,000 organizations use its platform. “These funds will help us to keep up with that pace and add to that with our company engineers,” Sijbrandij explained. “We need to make sure every part of GitLab is great and that CIOs and CTOs who supply the tools for their teams know that if they bet on GitLab that we’ll stand up to their expectations.”

  • Amazon open-sources its Topical Chat data set of over 4.7 million words [Ed: openwashing of listening devices without even releasing any code]
  • How Chrome OS works upstream

    Google has a long and interesting history contributing to the upstream Linux kernel. With Chrome OS, Google has tried to learn from some of the mistakes of its past and is now working with the upstream Linux kernel as much as it can. In a session at the 2019 Open Source Summit North America, Google software engineer Doug Anderson detailed how and why Chrome OS developers work upstream. It is an effort intended to help the Linux community as well as Google. The Chrome OS kernel is at the core of Google's Chromebook devices, and is based on a Linux long-term support (LTS) kernel. Anderson explained that Google picks an LTS kernel every year and all devices produced in that year will use the selected kernel. At least once during a device's lifetime, Google expects to be able to "uprev" (switch to a newer kernel version). Anderson emphasized that if Google didn't upstream its own patches from the Chrome OS kernel, it would make the uprev process substantially more difficult. Simply saying that you'll work upstream and actually working upstream can be two different things. The process by which Chrome OS developers get their patches upstream is similar to how any other patches land in the mainline Linux kernel. What is a bit interesting is the organizational structure and process of how Google has tasked Chrome OS developers to work with upstream. Anderson explained that developers need to submit patches to the kernel mailing list and then be a little patient, giving some time for upstream to respond. A key challenge, however, is when there is no response from upstream. "When developing an upstream-first culture, the biggest problem anyone can face is silence," Anderson said. Anderson emphasized that when submitting a patch to the mailing list, what a developer is looking for is some kind of feedback; whether it's good or bad doesn't matter, but it does matter that someone cares enough to review it. What the Chrome OS team does in the event that there is no community review is it will have other Chrome OS engineers publicly review the patch. The risk and worry of having Chrome OS engineers comment on Chrome OS patches is that the whole process might look a little scripted and there could be the perception of some bias as well. Anderson noted that it is important that only honest feedback and review is given for a patch.

  • Open Source Builds Trust & Credibility | Karyl Fowler

    Karyl Fowler is co-founder and CEO of Transmute, a company that’s building open source and decentralized identity management. We sat down with Fowler at the Oracle OpenWorld conference to talk about the work Transmute is doing.

  • What Is Infrastructure As Code?

    Rob Hirschfeld, Founder, and CEO of RackN breaks Infrastructure As Code (IaC) into six core concepts so users have a better understanding of it.

  • Everything You Need To Know About Redis Labs

    At the Oracle OpenWorld conference, we sat down with Kyle Davis – Head of Developer Advocacy at Redis Labs – to better understand what the company does.

Programming: Java, Python, and Perl

  • Oracle Releases Java 13 with Remarkable New Features

    Oracle – the software giant has released Java SE and JDK 13 along with the promise to introduce more new features in the future within the six-month cycle. The Java 13’s binaries are now available for download with improvements in security, performance, stability, and two new additional preview features ‘Switch Expressions’ and ‘Text Blocks’, specifically designed to boost developers’ productivity level. This gives the hope that the battle of Java vs Python will be won by the former. Remarking on the new release, Oracle said: “Oracle JDK 13 increases developer productivity by improving the performance, stability and security of the Java SE Platform and the JDK,”. [...] Speaking of the Java 13 release, it is licensed under the GNU General Public License v2 along with the Classpath Exception (GPLv2+CPE). The director of Oracle’s Java SE Product Management, Sharat Chander stated “Oracle offers Java 13 for enterprises and developers. JDK 13 will receive a minimum of two updates, per the Oracle CPU schedule, before being followed by Oracle JDK 14, which is due out in March 2020, with early access builds already available.” Let’s look into the new features that JDK 13 comes packed with.

  • 8 Python GUI Frameworks For Developers

    Graphical User Interfaces make human-machine interactions easier as well as intuitive. It plays a crucial role as the world is shifting.

  • What's In A Name? Tales Of Python, Perl, And The GIMP

    In the older days of open source software, major projects tended to have their Benevolent Dictators For Life who made all the final decisions, and some mature projects still operate that way. Guido van Rossum famously called his language “Python” because he liked the British comics of the same name. That’s the sort of thing that only a single developer can get away with. However, in these modern times of GitHub, GitLab, and other collaboration platforms, community-driven decision making has become a more and more common phenomenon, shifting software development towards democracy. People begin to think of themselves as “Python programmers” or “GIMP users” and the name of the project fuses irrevocably with their identity. What happens when software projects fork, develop apart, or otherwise change significantly? Obviously, to prevent confusion, they get a new name, and all of those “Perl Monks” need to become “Raku Monks”. Needless to say, what should be a trivial detail — what we’ve all decided to call this pile of ones and zeros or language constructs — can become a big deal. Don’t believe us? Here are the stories of renaming Python, Perl, and the GIMP.

  • How to teach (yourself) computer programming

    Many fellow students are likely in the same boat, the only difference being that the vast majority not only that don’t list computer science as one of their passions (but more as one of their reasons for not wanting to live anymore), but they get a very distorted view of what computer science and programming actually is.

    Said CS classes tend to be kind of a joke, not only because of the curriculum. The main reason why they are bad and boring is the way they are taught. I am going to address my main frustrations on this matter together with proposed solutions and a guide for those who want to start learning alone.

  • [Old] Perl Is Still The Goddess For Text Manipulation

    You heard me. Freedom is the word here with Perl.

    When I’m coding freely at home on my fun data science project, I rely on it to clean up my data.

    In the real world, data is often collected with loads of variations. Unless you are using someone’s “clean” dataset, you better learn to clean that data real fast.

    Yes, Perl is fast. It’s lightening fast.

Server: Ubuntu 19.10 Release Schedule, IBM LinuxONE III with Ubuntu and SUSE on Cloud Foundry Foundation and More LF

  • Ubuntu 19.10 Release Schedule and Expected Features

    This is a continually updated article to inform you about Ubuntu 19.10 release date, features and other important things associated with it. The development for Ubuntu 19.10 is nearing its end and it’s time to look at what new features and improvement this new release brings. Ubuntu 19.10 is an important release because it will set the course of development for Ubuntu 20.04 LTS (long term support). I have always felt that the LTS version release takes a lot of features from its predecessor. In other words, Ubuntu 19.10 will be a glimpse of the features you would be getting in Ubuntu 20.04.

  • Announcing the new IBM LinuxONE III with Ubuntu

    Enterprises today need the most secure, and flexible system to support their initiatives, and for that system to grow and evolve for tomorrow. The latest LinuxONE system was designed to support mission-critical initiatives and allow enterprises to be innovative as they design and scale their environment. LinuxONE III provides features for advanced data protection and privacy, enterprise resiliency and scalability, and cloud enablement and integration. Reliability and continuity are critical to the success of any business. With this release, they’ll benefit from up to 10:1 consolidation for key workloads, and up to 190 cores and 40TB of memory. And with 99.999%* availability and up to 7.4x better resilience, enterprises can confidently run and scale their business-critical workloads. The new LinuxONE III provides the highest levels of availability and scalability, so business-critical workloads run flawlessly, recover quickly, and grow seamlessly.

  • Project Quarks: Native Cloud Foundry for Kubernetes

    At the recent Cloud Foundry Summit EU in the Netherlands, Vlad Iovanov of SUSE gave a keynote demo of Project Quarks, the project that integrates Cloud Foundry and Kubernetes, by packaging the Cloud Foundry Application Runtime as containers instead of virtual machines. Vlad explains the current capabilities of Quarks, with a look at its future as a Kubernetes Operator. It’s a fairly technical topic, but Vlad uses creative diagrams and an understandable demo to show the power of Quarks. Cloud Foundry Foundation has posted all recorded talks from CF Summit EU on YouTube. Check them out if you want to learn more about what is happening in the Cloud Foundry world! I’ll be posting more SUSE Cloud Application Platform talks here over the coming days. Watch Vlad’s talk below...

  • Broad Deployment Of Cloud Foundry Almost Double In Just 2 Years

    As businesses embark on their digital transformation journey, developers are driving innovation across cloud native environments for building into the future. According to a recently released report by Cloud Foundry Foundation, 45 percent of user respondents describe their Cloud Foundry use as “broad” compared to 30 percent in 2018 and 24 percent in 2017. The report also revealed that 39 percent of developers are deploying applications in less than one day. What points out towards a healthy and growing community of developers is the fact that almost one in five respondents started using Cloud Foundry in just the last 12 months.

  • The Linux Foundation to Host Open Source Project for Drone Aviation Interoperability

    The Linux Foundation today announced it will host the InterUSS Platform Open Source Project to enable trusted, secure and scalable interoperability between UAS Service Suppliers (USSs) that advances safe, equitable and efficient drone operations. Initial contributors include both industry and regulatory organizations Wing, AirMap, Uber and the Swiss Federal Office of Civil Aviation (FOCA). Similar to the evolution of cities, our skies are becoming busier with traffic. In an effort to unleash innovation and ensure safety, aviation regulators around the world are implementing UAS Traffic Management (UTM, also referred to as U-Space) to support rapidly increasing and highly diverse drone operations. Under UTM, a set of USSs (also known as U-Space Service Providers orUSPs) assist drone operators to conduct safe and compliant operations. USSs can provide service in overlapping airspace and share data when required to support services such as a strategic deconfliction of flight plans and remote identification and industry is developing standards for this data sharing through organizations such as ASTM International. The InterUSS Project provides a forum for collaboration and development of standards-compliant, open source implementations that facilitate communication in the UTM/U-Space environment.

Security Leftovers

  • Security updates for Wednesday

    Security updates have been issued by CentOS (firefox and kernel), Debian (thunderbird), Fedora (curl), openSUSE (curl and python-Werkzeug), Oracle (kernel and thunderbird), Red Hat (rh-nginx114-nginx), SUSE (curl, ibus, MozillaFirefox, firefox-glib2, firefox-gtk3, openldap2, openssl, openssl1, python-urllib3, and util-linux and shadow), and Ubuntu (linux, linux-aws, linux-azure, linux-lts-trusty, linux-lts-xenial, linux-oracle, linux-raspi2, linux-snapdragon, and wpa).

  • SGX and security modules

    Software Guard Extensions (SGX) is a set of security-related instructions for Intel processors; it allows the creation of private regions of memory, called "enclaves". The aim of this feature is to work like an inverted sandbox: instead of protecting the system from malicious code, it protects an application from a compromised kernel hypervisor, or other application. Linux support for SGX has existed out-of-tree for years, and the effort of upstreaming it has reached an impressive version 22 of the patch set. During the upstreaming discussion, the kernel developers discovered that the proposed SGX API did not play nicely with existing security mechanisms, including Linux security modules (LSMs).

  • GitHub acquires Semmle to help developers spot security vulnerabilities [Ed: Company in NSA PRISM pretends to care about security (and also, Microsoft now uses GitHub to change people's code without asking the developers)]

    Software hosting service GitHub has acquired Semmle, a code analysis platform that helps developers discover security vulnerabilities in large codebases.