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February 2021

Programming Leftovers

Filed under
Development
  • The HTTP Referer header is fading away (at least as a useful thing)

    The HTTP Referer header on requests is famously misspelled (it should be Referrer), and also famously not liked because of privacy and security concerns. The privacy and security concerns are especially strong with external ('cross-origin') Referers, which is also the ones that many people find most useful because they tell you where visitors to your pages are coming from and let you find places where people have linked to you or are mentioning you.

  • Top 10 Natural Language Processing (NLP) Trends To Look Forward

    AI and Machine Learning have gifted us marvelous things. NLP or Natural Language Processing is one of them. It is one of the most prominent applications of AI. We are using this technology in our day-to-day life without even knowing. Translators, speech recognition apps, chatbots are actually NLP-powered products. Tech giants like Google and Microsoft are making new developments in NLP every year. If you are an AI enthusiast, you should go deep inside NLP. Chill! We got you covered. Just go through the article, and know about the top NLP trends that most data scientists are talking about.

  • Russ Allbery: DocKnot 4.01

    DocKnot is my software documentation and release management tool. This release adds support for a global user configuration file separate from the metadata for any given project and adds support for signing generated distribution tarballs with GnuPG. Currently, the only configuration options for the global configuration file are to set the destination location of generated distributions and the PGP key to use when signing them.

  • horizonator: terrain renderer based on SRTM DEMs

    I just resurrected and cleaned up an old tool I had lying around. It's now nice and usable by others. This tool loads terrain data, and renders it from the ground, simulating what a human or a camera would see. This is useful for armchair exploring or for identifying peaks. This was relatively novel when I wrote it >10 years ago, but there are a number of similar tools in existence now. This implementation is still useful in that it's freely licensed and contains APIs, so fancier processing can be performed on its output.

  • Happy birthday, Python, you're 30 years old this week: Easy to learn, and the right tool at the right time

    The 30th anniversary of Python this week finds the programming language at the top of its game, but not without challenges.

    "I do believe that Python just doesn’t have the right priorities these days," said Armin Ronacher, director of engineering at software monitoring biz Sentry and creator of Flask, the popular Python web app framework, in an email interview with The Register.

    Ronacher, a prolific Python contributor, remains a fan of the language. He credits Python's success to being both easy to learn and having an implementation that was easy to hack. And in its early years, Python didn't have a lot of competitors with those same characteristics, he said.

  • Google fires 150 game developers hired for Stadia: Report

    In about two years, Google has announced to shut down the in-house Stadia game development division, as it sees a great adoption of its technology by third-party developers and publishers to create world-class games.

    Google has said that it will not be investing further in bringing exclusive content from its internal development team SG&E, beyond any near-term planned games.

Benchmarks at Phoronix and Phoronix Test Suite

Filed under
Hardware

  • Vulkan Ray-Tracing Along With Other New/Updated Benchmarks For February - Phoronix

    Below is a look at all of the updates now available via OpenBenchmarking.org for Phoronix Test Suite users or if simply wanting to go to the test profile pages to gauge the CPU/GPU performance in the different real-world workloads. All these updates are available to Phoronix Test Suite users automatically if on an Internet connection when the metadata automatically updates or by running phoronix-test-suite openbenchmarking-refresh to force refresh.

  • The Phoronix Test Suite Gains Vulkan Ray-Tracing Benchmarks

    The versatile Phoronix Test Suite, developed and used by the Linux news website Phoronix, has gained profiles for benchmarking Vulkan ray-tracing performance using two different benchmarks as well as the JPEG XL benchmarks. There's also updates to many of the existing tests as well as a new 10.2.2 release of the Phoronix Test Suite software.

    [...]

    Michael Larabel has also updated many existing benchmarks, including the ones for the commercial closed-source games Portal 2, Insurgency and Civilization VI, blender, the libavif AVIF image encoder, the dav1d AV1 video encoder, GROMACS (GROningen MAchine for Chemical Simulations), ParaView, V-RAY (commercial), Pennant (OpenMP benchmark), NWChem and the free software platform game DDraceNetwork.

today's howtos

Filed under
HowTos
  • How To Use chmod and chown Command in Linux

    How do I use chmod and chown command under Linux / Unix operating systems?

    Use the chown command to change file owner and group information. we run the chmod command command to change file access permissions such as read, write, and access. This page explains how to use chmod and chown command on Linux or Unix-like systems.

  • How To Add Route on Linux – devconnected

    As a network engineer, you probably spend a lot of time thinking and planning your network infrastructure.

    You plan how computers will be linked, physically using specific cables but also logically using routing tables.

    When your network plan is built, you will have to implement every single link that you theorized on paper.

    In some cases, if you are using Linux computers, you may have to add some routes in order to link it to other networks in your company.

    Adding routes on Linux is extremely simple and costless : you can use the Network Manager daemon (if you are running a recent distribution) or the ifconfig one.

    In this tutorial, you will learn how you can easily add new routes on a Linux machine in order to link it to your physical network.

  • syncing subtitles in freedom

    The topic of creating subtitles with Free Software has often come up in my circles of Emacs-oriented users, and I haven't had a good recommendation to share, until this idea hit me the other day.

    Subtitle files are largely blocks of start/end time associated with blocks of text. I figured, once you got a transcript, existing Emacs Org Mode features could be used, perhaps along with keyboard macros, to turn the transcript into a synced subtitle file.

  • How To Install Minecraft on Ubuntu 20.04 LTS [Ed: Proprietary and Microsoft; not an attractive option as Free/libre alternatives exist]

    In this tutorial, we will show you how to install Minecraft on Ubuntu 20.04 LTS. For those of you who didn’t know, Minecraft is the most popular sandbox video game developed by Mojang studios but later purchased by Microsoft. It can be used with all major platforms like Linux, macOS, and Windows. Most Minecraft players would agree that the secrete to the game’s success lies in its creativity-inspiring design. Players are free to explore a large, procedurally generated world made of blocks, each of which can be interacted with, moved, or transformed into resources for crafting.

    This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you through the step-by-step installation of Minecraft on Ubuntu 20.04 (Focal Fossa). You can follow the same instructions for Ubuntu 18.04, 16.04, and any other Debian-based distribution like Linux Mint.

  • Ubuntu: format SD card [Guide]

    Are you new to Ubuntu? Do you need to format your SD card but can’t figure out how to do it? If so, this guide is for you! Follow along as we go over a few ways you can format SD cards on Linux.

  • How to remove a remove apt repository from Debian

    Do you have an Apt repository on your Debian Linux PC that you want to delete? Can’t figure out how to do it? We can help! Follow along as we go over two ways you can remove Apt repositories from Debian!

  • The Raspberry PI Cheat Sheet – Raspberry PI User

    The Raspberry PI cheat sheet gives a quick overview of common commands, installation tips and links to guides to help you set up your Raspberry PI as a desktop computer.

  • Do a Kernel Upgrade the Easy Way in Linux Mint

    Upgrading the Linux kernel can be difficult, especially for new Linux users. In Linux Mint, however, it's possible to upgrade to a newer kernel with zero hassle. Today we'll find out how to do it, and what to do if you experience problems.

Kernel: Linux 5.12 Features, Some Xilinx Code Liberated, Apple's Hardware Support Added

Filed under
Linux
  • Linux 5.12 Features Intel Xe VRR, Nintendo 64 Port + Clang LTO + Much More - Phoronix

    The Linux 5.12 merge window was off to a rough start due to winter storms preventing Linus Torvalds from merging changes for nearly one week, but in any case he appears to have caught up and the Linux 5.12-rc1 kernel is expected later today to end out the merge window. Here is a look at the many exciting changes coming for Linux 5.12.

    Linux 5.12 is going to be another very exciting kernel release. The stable Linux 5.12 release should happen in late April or early May depending upon how the cycle ultimately plays out. Linux 5.12 is an interesting kernel during COVID times with additions ranging from Nintendo 64 support some 20+ years later to Sony mainlining an official PlayStation 5 controller driver.

  • Xilinx Volleys Latest Open-Source Alveo Accelerator Driver Code - Phoronix

    Back in March 2019 Xilinx announced they were looking to upstream their Alveo FPGA accelerator drivers into the mainline kernel code. They followed through with posting the initial kernel patches and then fast forward to the end of 2020 they posted a new iteration of the patches. This month the company, which is in the process of being acquired by AMD, posted the third iteration of their open-source Linux kernel driver patches.

  • Apple Touch Bar Linux Driver Hopes For Upstream In 2021 - Phoronix

    For more than four years Apple's MacBook Pro has featured the Touch Bar as a display / control bar input device above the keyboard on these laptops. While there have been reports of Apple potentially phasing out the Touch Bar in future models, an open-source Linux driver for the component is still working its way toward the mainline kernel.

    Sent out on Saturday by independent developer Ronald Tschalär was the latest reverse-engineered, open-source driver code that gets the Touch Bar and ALS support working for MacBook Pro 13,* / 14,* / 15,* models. The Apple Touch Bar driver code was previously sent out on the kernel mailing list while now the Apple MBP 15,* models are supported and various code improvements made as a result of prior comments.

Mageia 8 Released with Better ARM Support and More

Filed under
Linux

The Mageia team announced the release of Mageia 8 which brings some new features and enhancements. This is what's new.
Read more

Testdisk To Recover Data From Deleted Flash Disk Drive

Filed under
GNU
Linux
Software

I deleted my flash disk drive. There were many files and folders within it -- now they are gone. Don't throw away nor wipe it out first, that's the advice I often heard. The secret is, actually we can save those data -- this is called recovery or undelete -- with certain hardware or software. Fortunately, gratefully, there is the best recovery software on GNU/Linux we can use, that is Testdisk, that has a very high success rate and is able to recover my data. I managed to recover 100% of one of my important folders with it. Below I share with you how I use it. You can practice this either on flash drive, hard disk, or SSD. I wish you success!

Read more

The Kate Text Editor - February 2021

Filed under
KDE

Like in January 2021, a lot of stuff happened for Kate in February 2021, too. I will skip the stuff that I already reported on Valentine’s Day. The web site for example has still a new design and some people are still working behind the scenes to improve it!

Let’s take a look at which cool new stuff you can expect to have in the 21.04 release of Kate. If you are adventurous: build the current development version yourself and try the stuff today. Feedback & patches welcome!

Read more

Xfce’s Apps Update for February 2021 Improves the Task Manager, Thunar, and More

Filed under
Software

The star of this month is Xfce’s Task Manager, which received two updates for its stable 1.4.x series up to version 1.4.2, to implement better color that works well with both light and dark themes, as well as to fix various bugs.

In addition, development kicked off on the next major Task Manager series that will come with the Xfce 4.18 release, which introduces many changes and improvements, including support for Client-side decorations (CSD), the migration of all of its settings to the Settings dialog, port to xfconf, and much more.

Read more

Top 10 Version Control Systems for Linux

Filed under
Linux

Version control systems are programs that record changes in filesystems, source code, or software. They are integral to agile software development. Depending on the design, you can categorize them into two types---centralized and distributed.

Thankfully, we can choose from several robust version control systems for Linux. This guide outlines some of the best such tools for starting software developers and DevOps professionals.

Read more

More in Tux Machines

IBM/Red Hat Leftovers

  • Use and contribute to a new Open Source Cloud Guide

    Today, at All Things Open, IBM is releasing the Open Source Cloud Guide, which highlights various use cases that are important in hybrid cloud environments, features the important open source projects in those areas, and discusses how various clouds are using open source in their offerings. By open sourcing the guide, developers are able to both use and contribute to the learnings and use cases

  • Announcing Cryostat 2.0: JDK Flight Recorder for containers

    Cryostat is a container-native JVM application that provides a secure API for profiling and monitoring containers with JDK Flight Recorder (JFR). JDK Flight Recorder collects profiling and diagnostic data from applications using JFR events stored in binary flight recordings. When requested, Cryostat can retrieve, store, and analyze flight recordings from containerized Java virtual machines (JVMs) to assess overall application health. Users can download recording files and upload them to JDK Mission Control (JMC) or Grafana for further analysis. This article introduces Cryostat and shares new features in the 2.0 release, including example use cases, tips for getting started, and additional release notes. For more information about Cryostat fundamentals, visit Introduction to Cryostat: JDK Flight Recorder for containers.

  • Kafka Monthly Digest: September 2021

    Welcome to the 44th edition of the Kafka Monthly Digest. In this edition, I'll cover what happened in the Apache Kafka community in September 2021. For last month’s digest, see Kafka Monthly Digest: August 2021 on IBM Developer.

  • Sensitive information detection using the NVIDIA Morpheus AI framework

    The growth of cloud-native applications has driven an explosion of east-west network traffic within a datacenter where applications can create hundreds of thousands of network connections among virtual machines and containers. As a consequence, the ability to track, monitor, and secure a datacenter in a timely manner has risen above that of any individual or team, thus requiring the help of AI and machine learning (AI/ML) to enable ITOps, infrastructure security, and DevSecOps teams to manage the complexity of modern cloud-native applications and the underlying platforms. Red Hat and NVIDIA have been working together to bring the security analytics capabilities of the NVIDIA Morpheus AI application framework to Red Hat infrastructure platforms for cybersecurity developers. This article provides a set of configuration instructions to Red Hat developers working on applications that use the NVIDIA Morpheus AI application framework and NVIDIA BlueField data processing units (DPUs) to secure interservice communication.

  • DevSecOps: 11 questions to ask about your security strategy now

    It’s the fourth and final quarter of 2021, believe it or not. That makes it time for IT leaders to review and evaluate how things are going – and plan for 2022. Security sometimes gets left out of those conversations. We’re here to make sure that doesn’t happen, with an extensive list of questions worth asking as you assess your security posture and look for ways to improve. We’ll start with a series of topics that are particularly relevant for teams that are considering or already implementing a DevSecOps strategy, then we’ll cover a series of fundamental questions worth asking in any organization – especially those currently struggling to modernize their security approach.

  • How Podman runs on Macs and other container FAQs | Enable Sysadmin

    As the Podman machine function becomes more used—particularly on Macs—there have been many questions about how this all works. Some of what is tossed around on the internet is pure speculation, so this article aims to eliminate any speculation. Many people do not realize that containers are really Linux. As such, Linux containers cannot run natively on macOS. Therefore, the containers must run in a Linux virtual machine (VM), and a Podman client interacts with that VM. This is in line with all solutions for running containers on macOS.

Gentoo-Based Porteus Kiosk 5.3 Released with Hardware Video Decoding, Virtual Keyboard

Porteus Kiosk 5.3 is here about six months after Porteus Kiosk 5.2 to add several new features, including experimental hardware video decoding support and virtual keyboard for both Mozilla Firefox ESR and Google Chrome web browsers. While the hardware decoding feature can be enabled in remote config with the hardware_video_decode parameter, the virtual keyboard feature comes as an extension and will pop-up automatically when clicking an input field on a web page. Users can control the virtual keyboard in remote config with the virtual_keyboard parameter. Read more

today's howtos

  • How To Install WordPress on Debian 11 - idroot

    In this tutorial, we will show you how to install WordPress on Debian 11. For those of you who didn’t know, WordPress is an open-source CMS (Content Management System) that allows you to create a website that is tailored to your specific requirements. With WordPress, you can create a blog, a company website, a portfolio, an online store, or anything else you can think of. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you through the step-by-step installation of WordPress cms on a Debian 11 (Bullseye).

  • How to Download & Install Ubuntu 21.10 Impish Indri - LinuxCapable

    Ubuntu has officially released the Ubuntu 21.10 codenamed Impish Indri. This has seen the introduction of GNOME 40 as the default desktop, and sadly GNOME 41 did not make the final cut. The release also introduces Linux Kernel 5.13 among new applications and other back-end performance improvements. Some of the other features.

  • How to Install Docker Engine on Debian 11 (Bullseye)

    Docker is an open platform tool which provides container run time environment. With the help of docker, developers can build, ship and run their code as a container anywhere like on-prem or public cloud. Docker makes use of OS-level virtualization to spin up the containers. The host on which docker is installed and containers are spun are called as ‘Docker Engine’. In this post, we will cover how to install Docker Engine (Community Edition) on Debian 11 (Bullseye) step by step.

  • How to Install GNOME 41 Desktop Unstable on Debian 11 Bullseye - LinuxCapable

    Many Debian 11 users know that Gnome 38 is the default version that ships with the codename Bullseye operating system. However, as much hype has been built around the new Gnome 41 desktop, many would be looking for an opportunity to install and test or permanently use the latest on offer from GNOME. GNOME 41 introduces many changes from visual changes, new apps, and overhaul back-end changes to improve performance. Overall, it is vastly different from what previous GNOME versions have looked before. In the following tutorial, you will learn how to install the new GNOME 41 desktop from the unstable (sid) repository on your Debian 11 Bullseye operating system.

  • How to Install Odoo 15 on Ubuntu 20.04 - SpeedySense

    In this article, we explain you how to install Odoo 15 on Ubuntu 20.04 LTS. Follow 8 easy steps for install Odoo 15 on Ubuntu. Odoo 15 was released on Oct 06, 2021. It is very easy to install Odoo in Ubuntu 20.04 Focal Fossa. Odoo is a most extensive open-source ERP that provides all business related application. Such as Accounting, CRM, Sales, Purchase, Project, Point of Sale, E-Commerce and many more. So Let’s start how to install and configure Odoo 14 in Ubuntu. Every year Odoo comes up with more new features and make platform more user-friendly.

  • How to Install Slack on Fedora 35 - LinuxCapable

    Slack is one of the most popular collaboration communication platforms in the world. From it was initial launch in 2013, it has grown. It is now favored amongst development teams and corporations to integrate many services, run groups, meetings, etc. The way Slack works is to create channels for your teams, topics, customers, or co-workers. Slack also features voice and video calls, file sharing. In the following tutorial, you will know how to install the Slack communication platform on Fedora 35.

  • How to Install and Configure Postgres 14 on Debian 11

    In this guide we are going to install Postgresql 14 in Debian 11. Postgresql is an open source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance. Postgres, is a free and open-source relational database management system emphasizing extensibility and SQL compliance. It was originally named POSTGRES, referring to its origins as a successor to the Ingres database developed at the University of California, Berkeley. PostgreSQL is used as the primary data store or data warehouse for many web, mobile, geospatial, and analytics applications. PostgreSQL can store structured and unstructured data in a single product.

  • How to Perform a Remote Linux Backup Using SSH

    Secure Shell or SSH is responsible for successful network communication between two remote computers. For a Linux system administrator, this networking tool is the perfect solution for remote server/machine access over unsecured networks.

  • How to manage wireless connections using iwd on Linux

    Iwd is the acronym of “iNet wireless daemon”. As the name suggests, it is a free and open source wireless management daemon written by Intel for Linux. It is designed to avoid the usage of external libraries it just relies on the functionalities integrated into the kernel. It can be used together with NetworkManager as a substitute for wpa_supplicant, or in standalone mode. In this tutorial we will explore the latter option.

  • Linux Uptime Command with Examples

    The uptime command displays how long the system has been up (running) along with the current time, number of logged-in users, and the system load averages for the past 1, 5, and 15 minutes. In this tutorial, we learn the Linux uptime command.

Android Leftovers