Language Selection

English French German Italian Portuguese Spanish

March 2019

LLVM Clang 9.0 Adds "-ftime-trace" To Produce Useful Time Trace Profiling Data

Filed under
Development
BSD

LLVM has merged a very useful feature for the Clang 9.0 release this autumn: the -ftime-trace feature allows producing time trace profiling data in a friendly format that is useful for developers to better understand where the compiler is spending most of its time and other areas for improvement.

Clang has already supported -ftime-report for printing time summaries for each stage of the compilation process while -ftime-trace yields much more useful data. The output of -ftime-trace is JSON-based profiling outputs that can be loaded into Chrome's chrome://tracing visualizer. This data shows how much time LLVM/Clang is spending on compiling each file, down to the function granularity.

Read more

SDDM v0.18.1

Filed under
KDE

We are happy to release a new SDDM version.

SDDM is a Qt based graphical login manager developed in a collaborative fashion by people from Liri, KDE and LXQt.

Read more

Linux Lite 4.4 is ready to replace Microsoft Windows on your aging PC

Filed under
Linux

One of the best things about operating systems based on the Linux kernel is they can sometimes be very lightweight. Why is this important? Well, when an OS uses very few resources, it can breathe new life into an aging PC. In other words, just because Windows 7 or Windows 10 run like molasses on your old computer, that doesn't mean you have to buy a new one. The right Linux distribution can make your older PC feel fast and new.

One of the most popular lightweight Linux-based operating systems is Linux Lite. Heck, the name of the distribution tells you that it is designed to use few resources! Version 4.4 is now available, and as per usual, it is based on the latest Ubuntu LTS -- 18.04. The Xfce desktop environment will feel familiar to those switching from Windows. Those new to Linux will also appreciate the easy access to many popular programs, such as Skype, Steam, and Spotify. Even the excellent Microsoft Office alternative, LibreOffice, is included.

Read more

Openness, Open Data and Open Hardware

Filed under
OSS
  • Open-source seeds: protecting new crops from privitisation

    From the green grass of England to the tropical forests of the Amazon basin and the semi-arid plains of North Africa, when it comes to food, no one crop can suit every soil type, or withstand the challenges of climate change. It is therefore vitally important that humans seek to preserve and increase the biological diversity of crops.

    In pursuit of this goal, Dr Johannes Kotschi from the Association for AgriCulture and Ecology, along with researchers from the University of Göttingen, has developed an open-source seed (OSS) licence that can be applied to new crop varieties. The OSS licence prevents seeds and their derivatives from being privatised, patented or otherwise protected in a way that would limit their sale or further modification. In doing so, it ensures that new varieties are available to everyone. Alongside the licence, the organisation OpenSourceSeeds supports breeders and seed producers who use it.

  • Aptiv Releases Comprehensive Open-Source Automated Vehicle Data Set

    Aptiv has released a comprehensive set of automated driving training data including camera, radar and lidar signals that has been fully annotated and labeled.

  • Aptiv Releases Comprehensive Open-Source Dataset for Autonomous Driving

    Global auto parts supplier Aptiv, formally known as Delphi Automotive, announced today the full release of nuScenes, an open-source autonomous vehicle (AV) dataset. The dataset will help developers improve the safety of autonomous vehicles.

  • MIPS R6 Architecture Now Available for Open Use

    Asked if any other MIPS cores – beyond R6 – will be available in the future, Swift said additional announcements are in the offing, indicating that Thursday’s offering is only the first set of MIPS Open’s release.  

    “Remember, this is a journey, not a destination,” Swift reminded.

    Other pending announcements include MIPS Open’s certification partners and MIPS Open Advisory Board. Names of individuals or companies for those initiatives are not yet public.

  • Wave Computing launches MIPS Open, provides royalty-free access to chip design data

    A few months after announcing plans to “open source its MIPS instruction set architecture,” the folks at Wave Computing are following through. Mostly.

    The company has launched the MIPS Open program and released the first components, offering developers royalty and license fee-free access to the latest versions of its 32-bit and 64-bit MIPS architecture.

    But it’s questionable whether this is truly an “open source” initiative, so much as an “open use” project designed encourage developers to work with the company’s chips.

DragonFlyBSD Receives Initial FUSE Port For File-Systems In User-Space

Filed under
BSD

Tomohiro Kusumi has contributed an initial FUSE implementation to DragonFlyBSD for implementing file-systems in user-space support.

The design is based roughly on FreeBSD code but is a cleanly written implementation for allowing user-space file-systems to work on this BSD. This initial FUSE support isn't designed to be API/ABI compatible with the FreeBSD code due to different sysctls and other factors.

Read more

Nate Graham's KDE Usability & Productivity Weekly Report

Filed under
KDE
  • KDE Usability & Productivity: Week 64

    Week 64 in KDE’s Usability & Productivity initiative has arrived, and I think you’ll see why this week needed two posts.

  • KDE's Konsole Now Supports Splitting, Plasma Vault Integration In Dolphin

    KDE contributor Nate Graham has continued his weekly blog posts outlining some of the notable improvements made in the world of KDE. One of the notable changes this week is the Konsole terminal emulator allowing arbitrary grid-like splits of a single window. That honors a ten year old bug report about wanting to restore support for "Quadkonsole" for allowing several consoles to render within a single window. That support is finally in place for the KDE Applications 19.08 release due out this summer.

Software: Python IDEs, Kodi, Best alternatives to Skype

Filed under
Software
  • 9 Best Free Python Integrated Development Environments (Updated 2019)

    Python is a widely used general-purpose, high level programming language. It’s easy to read and learn. It’s frequently used for science, data analysis, and engineering. With a burgeoning scientific community and ecosystem, Python is an excellent environment for students, scientists and organizations that develop technology software.

    One of the essential tools for a budding Python developer is a good Integrated Development Environment (IDE). An IDE is a software application that provides comprehensive facilities to programmers for software development.

    Many coders learn to code using a text editor. And many professional Python developers prefer to stay with their favourite text editor, in part because a lot of text editors can be used as a development environment by making use of plugins. But many Python developers migrate to an IDE as this type of software application offers, above all else, practicality. They make coding easier, can offer significant time savings with features like autocompletion, and built-in refactoring code, and also reduces context switching. For example, IDEs have semantic knowledge of the programming language which highlights coding problems while typing. Compiling is ‘on the fly’ and debugging is integrated.

  • Are free VPNs any good for Kodi?

    Before we get to the VPNs, let's start with Kodi, which is a free and open source media player.

  • What Is Kodi and How Does It Work?

    What is Kodi? Imagine your own version of Netflix or Amazon Prime Video, but one that is completely free? Sounds too good to be true, right?

  • Best alternatives to Skype 2019: paid and free

    If you're looking for the best Skype alternatives, then you've come to the right place. For many years, Skype has been one of the most popular VoIP (Voice over IP) services, with home and business users alike using it to video and voice call friends and family over the world.

    However, in 2011 Microsoft acquired Skype, and since then it has been tweaking the interface and adding (and removing features) which has not been too popular.

    So, if you're looking to move from Skype to another VoIP service, then this guide to the best Skype alternatives will help you make the leap. We look at both free alternatives to Skype, as well as packages you need to pay for, which is good for large companies with employees around the world.

Linux laptops alive in South Africa

Filed under
Linux

While it may serve a small niche in South Africa, Dell has been offering laptops that run Ubuntu Linux for years.

This is according to Chris Buchanan, client solutions director at Dell EMC in South Africa.

Dell and Canonical recently announced the new version of the Dell XPS 13 Developer Edition laptop, offering up to 16GB RAM and a 1TB SSB. Since then, a 2TB version has become available.

Like other Developer Edition variants of the Dell XPS 13, the 2018 model comes with Ubuntu Linux rather than Windows. At the time, the latest long-term support release: Ubuntu 18.04 “Bionic Beaver”.

Read more

More in Tux Machines

Free Software Leftovers

  • Ingo Juergensmann: Migrating from Drupal to WordPress

    If you can read this on planet.debian.org then migrating my blog from Drupal to WordPress was successful and the feed has been successfully changed by the Debian Planet Maintainers (thanks!). I’ve been a long term Drupal user. I think I started to use Drupal since it was included in Debian. At some point Drupal was removed from Debian and I started to use Serendipity instead. Later Drupal was included in Debian again and I moved back to Drupal. I think this must have been around Drupal 4 or Drupal 5. No idea. I even became active in the Drupal community and went to one of the first Drupal barcamps in Germany, namely in Cologne. This was shortly before Dries Buytaert started a business off of Drupal and went to the USA. I met with many devs of Drupal in Cologne and enjoyed the community and started with others a local Drupal User Group in Rostock. [...] So, after all the years my Drupal journey will come to an end. It was a long time with you. Sometimes joyful, sometimes painful. I wish you all the best, Drupal!

  • The round-the-world trip to fix a bug

    Mrs. Vera Cavalcante (@veracape), from Brazil, a long-time contributor for the Portuguese documentation on LibreOffice, was reviewing the translation of the Calc Guide and double-checking the translated text, with respect to the current user interface and the Help pages. Vera noticed that the Help pages on conditional formatting were not correct any more, and reported in the Brazilian team Telegram group (Bugzilla is still very hard for non-native English speakers).…

  • Red Kubes Container Platform Flies Open Source Flag

    Red Kubes, a Dutch-based startup, open sourced a free community edition of its Otomi Container Platform in a bid to remedy the ongoing complexity surrounding Kubernetes configurations. The scalability, agility, and speed-to-market advantages that Kubernetes offers have been handsome enough to capture a growing share of the enterprise market, but this very strength can become an Achilles heel for container deployments. In this sense, it’s far too easy – and common – to create thousands or even tens of thousands of containers across applications. Not only does this create an operational money pit, but management becomes a herculean feat to any container newbie.

  • The Apache Software Foundation Announces Apache® ECharts™ as a Top-Level Project

    The Apache Software Foundation (ASF), the all-volunteer developers, stewards, and incubators of more than 350 Open Source projects and initiatives, announced today Apache® ECharts™ as a Top-Level Project (TLP). Apache ECharts is an intuitive, interactive, and powerful charting and visualization library ideally suited for commercial-grade presentations. The project originated in 2013 at Baidu and entered the Apache Incubator in January 2018.

  • Shots fired in disputes over OSS-as-a-Service

    Cloud services are the great disruptor of both IT organizations and vendors, and wrapping open source software around a service is the latest flashpoint. The open source development model has proven to be an incredible incubator of innovative software by democratizing and distributing the conception, design, implementation and debugging of new titles, advantages that were thoroughly explored more than two decades ago in the book, The Cathedral and the Bazaar. Although open source has since been adopted, encouraged and sponsored by every major software company, its origins were decidedly non-commercial with utopian overtones of liberating code from the tyranny of proprietary shackles. The earliest open source projects, notably Gnu Emacs and other tools from the Gnu Project, embraced this idealistic ethos with a restrictive, comprehensive license, GPL, that applies to derivative work using the code.

  • AWS to Fork Elasticsearch as Elastic Moves Away from Open Source

    Elastic’s license change from open source ALv2 to SSPL appears to have moved Amazon Web Services to “launch new forks of both Elasticsearch and Kibana.” Elasticsearch’s move towards the more restrictive Server Side Public License has already begun to ruffle feathers among developers.

Programming Leftovers

  • Excellent Free Tutorials to Learn Tcl - LinuxLinks

    Tcl (Tool Command Language) is a dynamic programming/scripting language based on concepts of Lisp, C, and Unix shells. Here's our recommended free tutorials to learn Tcl.

  • ROC and Precision-Recall curves - How do they compare?

    Both curves offer two useful information: how to choose the positive class prediction threshold and what is the overall performance of the classification model. The former is determined by selecting the threshold which yield the best tradeoff, in adequation with the prediction task and operational needs. The latter is done by measuring the area under the curves which informs about how good the model is, because by measuring the area under the curves, one computes the overall probability that a sample from the negative class has a lower probability than a sample from the positive class. With scikit-learn, the values can be computed either by using the roc_auc attribute of the object returned by plot_roc_curve() or by calling roc_auc_score() directly for ROC curves and by using the average_precision attribute of the object returned by plot_precision_recall_curve() or by calling average_precision_score() directly for PR curves.

  • Write GIMP scripts to make image processing faster | Opensource.com

    Some time ago, I wanted to give a blackboard-style look to a typeset equation. I started playing around with the GNU Image Manipulation Program (GIMP) and was satisfied with the result. The problem was that I had to perform several actions on the image, I wanted to use this style again, and I did not want to repeat the steps for all the images. Besides, I was sure that I would forget them in no time.

  • Bash wait Command | Linuxize

    wait is a command that waits for the given jobs to complete and returns the exit status of the waited for command. Since the wait command affects the current shell execution environment, it is implemented as a built-in command in most shells. In this article, we’ll explore the Bash built-in wait command.

  • Santiago Zarate: Cron do not send me empty emails
  • Rust & the case of the disappearing stack frames | Inside Rust Blog

    Now that the FFI-unwind Project Group has merged an RFC specifying the "C unwind" ABI and removing some instances of undefined behavior in the "C" ABI, we are ready to establish new goals for the group. Our most important task, of course, is to implement the newly-specified behavior. This work has been undertaken by Katelyn Martin and can be followed here.

Open Hardware: Raspberry Pi, Arduino, Thomas Petazzoni (Bootlin) on Training

  • Qsync fixed on the Pi4 and FF compiled

    The Raspberry Pi4 does not have a hardware battery-backed clock, so relies on getting the date and time from an Internet time server. In EasyOS, Qsync is the utility that does that. At first bootup, QuickSetup has a checkbox to enable getting time from the Internet, which will launch Qsync. At first bootup on the Pi4, if you are going to connect to Internet via wifi, not ethernet, then there won't be an immediate Internet access. No problem, Qsync will run once the Internet connection is established. Qsync will run just once at bootup and after Internet connection. That's fine, but I couldn't understand why it would suddenly stop working. Then discovered that /etc/init.d/qsync was getting its executable-flag cleared.

  • Arduino Blog » This children’s console looks like something straight out of a superhero’s lair

    Kids have wonderful imaginations, and to help students at a primary school have a super time, creator “palladin” was asked to construct a console for them to use. The device features a variety of lights and sci-fi additions, including glowing “reactor” tubes that diffuse light using hair gel and a “memory bank” that emits flashing patterns for a 1950s supercomputer look.

  • Arduino Blog » This pen plotter draws detailed maps the size of walls

    Christopher Getschmann wanted a wall-sized map of the world. He soon realized, however, that it’s tough to actually buy such a map that’s both beautiful and detailed enough to satisfy his cartographic tastes. While many would simply move on to the next “thing,” Getschmann instead took things into his own hands, and built a pen plotter specifically to draw massive 2×3 meter map for his wall.

  • New training course: embedded Linux boot time optimization

    For many embedded products, the issue of how much time it takes from power-on to the application being fully usable by the end-user is an important challenge. Bootlin has been providing its expertise and experience in this area to its customers for many years through numerous boot time optimization projects, and we have shared this knowledge through a number of talks at several conferences over the past years. We are now happy to announce that we have a new training course Embedded Linux boot time optimization, open for public registration. This training course was already given to selected Bootlin customers and is now available for everyone.

Red Hat/Fedora Leftovers

     
  • A brief introduction to Ansible roles for Linux system administration

    In this part one of two articles, learn to use rhel-system-roles with your Ansible deployment to better manage functionality such as network, firewall, SELinux, and more on your Red Hat Enterprise Linux servers.

  •  
  • From Docker Compose to Kubernetes with Podman | Enable Sysadmin

    Use Podman 3.0 to convert Docker Compose YAML to a format Podman recognizes.

  •  
  • Fedora Community Blog: Software Management (RPM, DNF) 2020 retrospective

    On behalf of the RPM and DNF teams, I would like to highlight changes that have appeared in our packages in 2020. Thanks everyone for your bug reports and patches!

  •   
  • Application and data resiliency for Kubernetes

    Using tools like Red Hat OpenShift and Red Hat OpenShift Container Storage, organizations are developing and deploying more stateful applications and microservices at an accelerating pace. According to a recent Enterprise Strategy Group (ESG) research study, 41% of companies currently use containers for production applications. Another 33% use containers for dev/test and pre-production only but plan to use containers for production applications in the next 12 months.

  • Red Hat Introduces Data Resilience for Enterprise Kubernetes Applications

    Red Hat, Inc., the world's leading provider of open source solutions, today introduced new data resilience capabilities for cloud-native workloads with the release of Red Hat OpenShift Container Storage 4.6. This offering from Red Hat Data Services enables customers to extend their existing data protection solutions and infrastructure to enhance data resilience for cloud-native workloads across hybrid and multicloud environments.

  •  
  • Why Red Hat killed CentOS—a CentOS board member speaks

    This morning, The Register's Tim Anderson published excerpts of an interview with the CentOS project's Brian Exelbierd. Exelbierd is a member of the CentOS board and its official liaison with Red Hat. Exelbierd spoke to Anderson to give an insider's perspective on Red Hat's effective termination of CentOS Linux in December, in which the open source giant announced CentOS Linux was to be deprecated immediately—with security upgrades to CentOS Linux 8 ending later in 2021 rather than the 2029 end of support date CentOS users expected.