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Programming: Git and Qt

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Development
  • Understand the new GitLab Kubernetes Agent

    GitLab's current Kubernetes integrations were introduced more than three years ago. Their primary goal was to allow a simple setup of clusters and provide a smooth deployment experience to our users. These integrations served us well in the past years but at the same time its weaknesses were limiting for some important and crucial use cases.

  • GitLab Introduces the GitLab Kubernetes Agent

    The GitLab Kubernetes Agent (GKA), released in GitLab 13.4, provides a permanent communication channel between GitLab and the cluster. According to the GitLab blog, it is designed to provide a secure solution that allows cluster operators to restrict GitLab's rights in the cluster and does not require opening up the cluster to the Internet.

  • Git Protocol v2 Available at Launchpad

    After a few weeks of development and testing, we are proud to finally announce that Git protocol v2 is available at Launchpad! But what are the improvements in the protocol itself, and how can you benefit from that?

    The git v2 protocol was released a while ago, in May 2018, with the intent of simplifying git over HTTP transfer protocol, allowing extensibility of git capabilities, and reducing the network usage in some operations.

    For the end user, the main clear benefit is the bandwidth reduction: in the previous version of the protocol, when one does a “git pull origin master”, for example, even if you have no new commits to fetch from the remote origin, git server would first “advertise” to the client all refs (branches and tags) available. In big repositories with hundreds or thousands of refs, this simple handshake operation could consume a lot of bandwidth and time to communicate a bunch of data that would potentially be discarded by the client after.

    In the v2 protocol, this waste is no longer present: the client now has the ability to filter which refs it wants to know about before the server starts advertising it.

  • Qt Desktop Days 7-11 September

    We are happy to let you know that the very first edition of Qt Desktop Days 2020 was a great success! Having pulled together the event at very short notice, we were delighted at the enthusiastic response from contributors and attendees alike.

  • Full Stack Tracing Part 1

    Full stack tracing is a tool that should be part of every software engineer’s toolkit. It’s the best way to investigate and solve certain classes of hard problems in optimization and debugging. Because of the power and capability it gives the developer, we’ll be writing a series of blogs about it: when to use it, how to get it set up, how to create traces, and how to interpret results. Our goal is to get you capable enough to use full stack tracing to solve your tough problems too.

    Firstly, what is it? Full stack tracing is tracing on the full software stack, from the operating system to the application. By collecting profiling information (timing, process, caller, API, and other info) from the kernel, drivers, software frameworks, application, and JavaScript environments, you’re able to see exactly how the individual components of a system are interacting. That opens up areas of investigation that are impossible to achieve with standard application profilers, kernel debug messages, or even strategically inserted printf() commands. One way to think of full stack tracing is like a developer’s MRI machine that allows you to look into a running system without disturbing it to determine what is happening inside. (And unlike other low-level traces that we’ve written about before, full stack tracing provides a simpler way to view activity up and down the entire software stack.)

More in Tux Machines

today's howtos

  • How to install NotepadQQ on Linux

    NotepadQQ is an exciting application that attempts to bring Linux users what Notepad++ does on Windows: an impressive, Microsoft Notepad-like text editor that supports various programming languages and other useful features. Here’s how to get it installed on your Linux system.

  • How to Install and Configure Squid Proxy on Ubuntu 20.04 | Linuxize

    Squid is a full-featured caching proxy supporting popular network protocols like HTTP, HTTPS, FTP, and more. It can be used to improve the web server’s performance by caching repeated requests, filter web traffic, and access geo-restricted content. This tutorial explains how to set up a Squid Proxy on Ubuntu 20.04 and configure Firefox and Google Chrome web browsers to use it.

  • How to set up the Jellyfin media server on Linux

    The Jellyfin developers offer up a myriad of ways to install the media server on the Linux platform. From Docker to downloadable DEBs and custom packages in the Arch Linux AUR. In this guide, we’ll focus on downloadable packages. However, if you are an advanced Linux user and know how to use Docker, click here to get your hands on it. To start installing Jellyfin on your Linux server, open up a terminal window via SSH or by physically sitting in front of it. After that, follow the command-line installation instructions outlined below.

  • libtraceevent>=5.9-1 update requires manual intervention

    The libtraceevent package prior to version 5.9-1 was missing a soname link. This has been fixed in 5.9-1, so the upgrade will need to overwrite the untracked files created by ldconfig.

  • Parabola GNU/Linux-libre: [From Arch] libtraceevent>=5.9-1 update requires manual intervention
  • How to Install and Configure FreeNAS 11.3 U5 Storage on VMware Workstation - SysAdmin

    This video tutorial shows how to install and configure FreeNAS 11.3 U5 Storage on VMware Workstation step by step.

  • How to check the sshd Logs on Linux? – Linux Hint

    sshd stands for Secure SHell Daemon. It is a hidden process that silently listens to all the authentication and login attempts of the Linux operating system. It is especially helpful if you are trying to figure out any unauthorized login attempts to your system. In this article, how to check the sshd Logs on Linux is explained.

  • How to Check If a Port Is in Use in Linux – Linux Hint

    At any single instance, multiple ports can be open in your system, so it can be useful to determine which ports are open. This article shows you four possible methods to use to check whether a port is in use in Linux.

  • Best Books for Learning Linux – Linux Hint [Ed: Caution for spammy links in the referrer spam sense]

    Books are important learning resources for both beginners and experts, but with all the books available on the market, it may be difficult to choose just one. Here, we review five books on Linux to help you choose.

  • How to change Chrome profile name

    Chrome has support for multiple profiles. What differentiates one profile from the other is the Google account that is (or isn’t) connected to a profile. Users can create a new Chrome profile and sync it with their Google account, or they can skip adding an account and keep everything local. What a user cannot do is create a profile that has no name.

Android Leftovers

Audiocasts/Shows: Noodlings, Python Bytes, Going Linux, Linux in the Ham Shack and Hackaday

  • Noodlings | Inspiration Is Around You – CubicleNate's Techpad

    This is the 21st hot-pocket-sized podcast that won’t scorch roof of your mouth. I have a small collection of vintage or near vintage gaming consoles. I lean mostly in the Nintendo party as I think they have a great grasp on what is fun. I don’t always agree with many of their business practices but the entertainment they have provided is multi-generationally successful. In order to lower the wasted time of hooking these systems up to enjoy and better organize their presentation, I built a Gaming Rack that was inspired by watching a YouTube channel called Retro Recipes. Seeing how nicely laid out and easily enjoyed they were set up, I made the decision that I must adapt this idea to my little world.

  • Episode #204 Take the PSF survey and Will & Carlton drop by - [Python Bytes Podcast]

    Python Bytes podcast delivers headlines directly to your earbuds.

  • Going Linux #398

    In our second of two parts on editing and managing photos on Linux we describe a few additional applications for you to try. We share what they do but the trying is up to you! We also reveal what we are doing for our 400th episode.

  • LHS Episode #374: The Weekender LVIV | Linux in the Ham Shack

    It's time once again for The Weekender. This is our bi-weekly departure into the world of amateur radio contests, open source conventions, special events, listener challenges, hedonism and just plain fun. Thanks for listening and, if you happen to get a chance, feel free to call us or e-mail and send us some feedback. Tell us how we're doing. We'd love to hear from you.

  • Hackaday Podcast 090: DIY Linux SBC, HDMI CEC, Fake Bluepills, And SCARA Arms | Hackaday

    Hackaday editors Elliot Williams and Mike Szczys chat about our favourite hacks from the past week. We start off with a bit of news of the Bennu asteroid and the new Raspberry Pi Compute Module. We drive ourselves crazy trying to understand how bobbin holders on sewing machines work, all while drooling over the mechanical brilliance of a bobbin-winding build. SCARA is the belt and pulley champion of robot arms and this week’s example cleverly uses redundant bearings for better precision. And we wrap up the show looking in on longform articles about the peppering of microcontrollers found on the Bluepill and wondering what breakthroughs are left to be found for internal combustion.

Ubuntu 20.10 Based Flavors Now Available, Download Now

The seven official flavors of Ubuntu 20.10 are now available with the latest builds and .iso images and ready for you - Kubuntu, Lubuntu, Xubuntu, Ubuntu Budgie, Ubuntu Kylin, Ubuntu MATE, and Ubuntu Studio - 20.10. Read more