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Updated: 2 hours 14 min ago

What's your favorite shell for sysadmin work?

Friday 17th of July 2020 10:00:00 PM

NetworkManager 1.26 Brings Autoconnect for Wi-Fi Profiles, firewalld zone Support

Friday 17th of July 2020 06:00:00 PM

Numerous GNU/Linux distributions ship with NetworkManager by default to allow users to manage network connections, whether they're Wi-Fi or wired connections or VPN connections.

How to Restrict Network Access Using FirewallD

Friday 17th of July 2020 05:00:00 PM

As a Linux user, you can opt either to allow or restrict network access to some services or IP addresses using the firewalld firewall which is native to CentOS/RHEL 8 and most RHEL based distributions such as Fedora.

Arch Linux-Based EndeavourOS Celebrates First Anniversary with New ISO Release, ARM Port

Friday 17th of July 2020 03:00:00 PM

Born from the ashes of the Antergos Linux distribution, EndeavourOS celebrates today its first anniversary since the first stable release.

Speed up container builds with overlay mounts

Friday 17th of July 2020 01:00:00 PM

How Podman can speed up builds for multiple distributions by sharing the host's metadata.

Ubuntu 19.10 (Eoan Ermine) Reached End of Life, Upgrade to Ubuntu 20.04 LTS Now

Friday 17th of July 2020 12:00:00 AM

Ubuntu 19.10 is not a Long Term Support release so Canonical will no longer provide security and software updates for Ubuntu 19.10 users.

Check which Virtualization Technology is supported by your CPU on Debian 10

Thursday 16th of July 2020 05:00:00 PM

Whenever you want to install virtualization applications on your Debian system such as KVM, VirtualBox, etc., you should first verify if your system supports virtualization and if it is enabled.

Sysadmin careers: How sysadmins can pay it forward

Thursday 16th of July 2020 03:00:00 PM

These sage words tell you how to leave your infrastructure better than you found it.

How to Test Network Throughput Using iperf3 Tool in Linux

Thursday 16th of July 2020 01:00:00 PM

Scan and Repair Disk Bad Sectors in Ubuntu Linux, Fedora

Wednesday 15th of July 2020 06:00:00 PM

There are terminal utilities available in Linux which can help you to manage hard disk bad sectors. You can scan and mark them as unusable as well using these utilities.

How To Fix "hard disk with UUID already exists" Issue In VirtualBox In Linux

Wednesday 15th of July 2020 05:00:00 PM

This brief tutorial explains how to fix the "hard disk with UUID already exists" issue in VirtualBox in Linux operating system.

How to List All Virtual Hosts in Apache Web Server

Wednesday 15th of July 2020 03:00:00 PM

Display Virtualization Systems Stats With Virt-top In Linux

Wednesday 15th of July 2020 02:00:00 PM

Virt-top is a top-like utility for displaying the stats of virtualized domains. In this brief guide, we will see how to display virtualization systems stats with Virt-top in Linux.

Using the nstat network statistics command in Linux

Wednesday 15th of July 2020 01:00:00 PM

Introduction to Red Hat Insights

Wednesday 15th of July 2020 01:00:00 AM

One reader shares his take on Red Hat Insights, a cloud service for proactively identifying issues with your Linux environment.

Top Tips for Securing Your Linux System in 2020

Wednesday 15th of July 2020 12:00:00 AM

Linux servers are at greater risk than ever. Here are our top tips for optimizing the security of your Linux system in this ever-evolving threat environment.

SUSE Buys Rancher Labs to Up Its Kubernetes Game

Tuesday 14th of July 2020 11:00:00 PM

How To Enable Nested Virtualization In KVM In Linux

Tuesday 14th of July 2020 05:00:00 PM

Nested virtualization is a feature that allows to run virtual machines within a VM. This guide explains how to enable nested virtualization in KVM in Linux.

More in Tux Machines

Linspire 9.0 Released

Today our development team is excited to announce the release of Linspire 9.0; packed with a TON of improvements and security updates, this is a major update that we’ve been working hard to get out to our faithful users. The global pandemic has delayed its release, but the development team has worked diligently and meticulously behind-the-scenes over the past few months, fine-tuning every detail of what is widely considered to be the premier Linux desktop on the market today. The Linspire 9.0 series will be the last one featuring the 18.04 LTS codebase; upcoming Linspire X will be based on the 20.04 LTS code and kernel. Read more Also: Linspire 9.0 Officially Released, Based on Ubuntu 18.04 LTS and Linux 5.4 LTS

today's leftovers

  • Fast Bare Metal provisioning and infrastructure automation with MAAS
  • [Updated] Michael Stapelberg: Optional dependencies don’t work

    In the i3 projects, we have always tried hard to avoid optional dependencies. There are a number of reasons behind it, and as I have recently encountered some of the downsides of optional dependencies firsthand, I summarized my thoughts in this article.

  • Benchmarking NetBSD, second evaluation report

    This report was written by Apurva Nandan as part of Google Summer of Code 2020. This blog post is in continuation of GSoC Reports: Benchmarking NetBSD, first evaluation report blog and describes my progress in the second phase of GSoC 2020 under The NetBSD Foundation. In this phase, I worked on the automation of the regression suite made using Phoronix Test Suite (PTS) and its integration with Anita. The automation framework consists of two components Phoromatic server, provided by Phoronix Test Suite in pkgsrc, and Anita, a Python tool for automating NetBSD installation.

  • Interest in Kodi Declines After a Turmultuous Few Years of Piracy Headlines

    After many years of being mentioned in the same breath as movie and TV show piracy, interest in the Kodi media player appears to have peaked and is now on the decline. That's according to Google Trends data which suggests that after reaching a high in early 2017, interest via search is now on a continuous downward trend.

Programming Leftovers

  • RcppSimdJson 0.1.1: More Features

    A first update following for the exciting RcppSimdJson 0.1.0 release last month is now on CRAN. Version 0.1.1 brings further enhancements such direct parsing of raw chars, working with compressed files as well as much expanded querying ability all thanks to Brendan, some improvements to our demos thanks to Daniel as well as a small fix via a one-liner borrowed from upstream for a reported UBSAN issue. RcppSimdJson wraps the fantastic and genuinely impressive simdjson library by Daniel Lemire and collaborators. Via very clever algorithmic engineering to obtain largely branch-free code, coupled with modern C++ and newer compiler instructions, it results in parsing gigabytes of JSON parsed per second which is quite mindboggling. The best-case performance is ‘faster than CPU speed’ as use of parallel SIMD instructions and careful branch avoidance can lead to less than one cpu cycle use per byte parsed; see the video of the talk by Daniel Lemire at QCon (also voted best talk).

  • Jonathan Dowland: Generic Haskell

    When I did the work described earlier in template haskell, I also explored generic programming in Haskell to solve a particular problem. StrIoT is a program generator: it outputs source code, which may depend upon other modules, which need to be imported via declarations at the top of the source code files. The data structure that StrIoT manipulates contains information about what modules are loaded to resolve the names that have been used in the input code, so we can walk that structure to automatically derive an import list. The generic programming tools I used for this are from Structure Your Boilerplate (SYB), a module written to complement a paper of the same name.

  • 9 reasons I upgraded from AngularJS to Angular

    In 2010, Google released AngularJS, an open source, JavaScript-based frontend structure for developing single-page applications (SPAs) for the internet. With its move to version 2.0 in 2016, the framework's name was shortened to Angular. AngularJS is still being developed and used, but Angular's advantages mean it's a smart idea to migrate to the newer version.

  • [Old/Odd] 5 news feautures of PHP-7.2

    Before PHP 7.2 the object keyword was used to convert one data type to another (boxing and unboxing), for example, an array to an object of the sdtClass class and/or vice versa, as of PHP 7.2 the object data type can be used as parameter type or as function return type.

  • This Week In Rust: This Week in Rust 351

Proprietary Software and Linux Foundation

  • [PCLinuxOS] Opera Browser updated to 70.0.3728.106

    Opera is a Chromium-based browser using the Blink layout engine. It differentiates itself because of a distinct user interface and other features.

  • Vivaldi Explains Why They Make "Proprietary Garbage"

    It is unfair to say that Vivaldi is not open source at all as someone like Distrotube has done, the way the company behind Vivaldi has decided to handle this application is by using a dual licensing system where the open source portion of the application is licensed under an open source BSD license but that's not the point of today, the point is to explain why they have decided to license their software in such a way.

  • Scientists Forced To Change Names Of Human Genes Because Of Microsoft's Failure To Patch Excel

    Six years ago, Techdirt wrote about a curious issue with Microsoft's Excel. A default date conversion feature was altering the names of genes, because they looked like dates. For example, the tumor suppressor gene DEC1 (Deleted in Esophageal Cancer 1) was being converted to "1-DEC". Hardly a widespread problem, you might think. Not so: research in 2016 found that nearly 20% of 3500 papers taken from leading genomic journals contained gene lists that had been corrupted by Excel's re-interpretation of names as dates. Although there don't seem to be any instances where this led to serious errors, there is a natural concern that it could distort research results. The good news is this problem has now been fixed. The rather surprising news is that it wasn't Microsoft that fixed it, even though Excel was at fault. As an article in The Verge reports:

  • The Linux Foundation Wants Open-Source Tech to Address Future Pandemics

    The Linux Foundation, which supports open-source innovation in blockchain tech, launched the Linux Foundation Public Health Initiative (LFPHI) at the end of July. The LFPHI’s goal is to promote the use of open source by public health authorities, which can be scrutinized by anyone, to fight not just COVID-19 but future pandemics as well.

  • LF Edge’s Akraino Project Release 3 Now Available, Unifying Open Source Blueprints Across MEC, AI, Cloud and Telecom Edge

    LF Edge, an umbrella organization within the Linux Foundation that aims to establish an open, interoperable framework for edge computing independent of hardware, silicon, cloud, or operating system, today announced the availability of Akraino Release 3 (“Akraino R3”). Akraino’s third and most mature release to date delivers fully functional edge solutions– implemented across global organizations– to enable a diversity of edge deployments across the globe. New blueprints include a focus on MEC, AI/ML, and Cloud edge. In addition, the community authored the first iteration of a new white paper to bring common open edge API standards to align the industry.

  • Linux Foundation Launches Jenkins X Training Course

    Linux Foundation has launched a new training course, LFS268 – CI/CD with Jenkins X. Developed in conjunction with the Continuous Delivery Foundation, the course will introduce the fundamentals of Jenkins X.