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today's howtos

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HowTos
  • How to Enable MySQL/MariaDB Query Logging

    In this short and easy to follow guide, we cover how to enable MySQL/MariaDB query logging and save queries to a file.

    When using a database, it often happens that developers want to know what’s going on behind the scene. Whether it is for troubleshooting, performance tuning, or out of sheer curiosity.

    General query logs remain one of the most popular sources of auditing and diagnostic information in MySQL/MariaDB databases. After logging is enabled, the database server will write information to the log file when clients connect or disconnect, and it will log each SQL statement.

  • How to install Zotero on Ubuntu 22.04 or 20.04 LTS - Linux Shout

    Zotero is a reference management system and academic network, here we learn the steps to install Zotero in Linux such as Ubuntu 22.04 Jammy JellyFish or Ubuntu 20.04 Focal Fossa.

    Zotero is an open-source and free tool that helps in collecting, organizing, citing, and sharing research. It consists of two components: Zotero standalone (Mac, Windows, Linux) with a plugin for Firefox, Google Chrome, and Safari; Zotero web application: computer-independent access to your library, finding and setting up groups on specific topics (see collaboration), making contacts with others. The two components of this tool can be synchronized with each other.

    If you are often involved in extensive projects at work or have to write a large-scale work during your studies, you quickly lose track of the sources used. With Zotero, you keep all information together and create a clear library for your project without much effort. It is particularly suitable for literature research on the Internet and the direct transfer of the researched data and works in groups that want to manage literature together.

  • How to Copy Directory in Linux: (Beginner to Advance)

    While working in several operating systems, we use to add files and folders, cut, copy, edit and delete them as per our choice. Just like all these, the Linux system provides us the opportunity to copy a single folder to another folder even though the folder is empty or not. Therefore, we will discuss some easy methods to copy one directory to another in Ubuntu 20.04 system. Let’s have a fresh start by using the different ways to copy a directory from one place to another in Linux.

    For this particular purpose, we must open up the terminal shell as we are going to do all things in it. There are two ways to open it. One is from the activity search area and the other is the shortcut key “Ctrl+Alt+T”. Practice one of the mentioned methods to open it and start implementing the commands in it one by one.

  • How to Change Default Torrent Client for Magnet Links in Ubuntu 20.04+ | UbuntuHandbook

    When clicking a magnet link in Chrome browser, it pops-up with “Open xdg-open” option allows to launch the default app to start the downloading.

    Unlike Firefox, Google Chrome does not offer an option to choose which app to handle the link. Instead, it launches the default app directly. For those want to change this default app to handle magnet links, here’s how to do the trick in Ubuntu.

  • How to install Microsoft Fonts on Elementary OS 6.0 - Invidious
  • How to install VCV Rack 2 on a Chromebook

    Today we are looking at how to install VCV Rack 2 on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.

  • How to Install Papirus Icon Theme on Ubuntu - OMG! Ubuntu!

    Changing the icon theme on Ubuntu is an easy way to give your desktop a new look and feel. In this post we show you how to install Papirus icons on Ubuntu from a PPA.

    Why use the Papirus icon set? Because it’s good — in fact, it’s one of the best icon themes for Ubuntu not to mention other Linux distros like Linux Mint, Zorin OS, and Manjaro. Thousands of users use this set, and several Linux distributions ship it as their default.

  • Exploring GIT Commit Hashes & Generating Cryptographic Zeros – Jon's FOSS Blog

    So I was trying to research what goes into generating a GIT commit hash and I thought I would try to personalize the cryptographic hash output a little bit. My computer isn’t that powerful but it may be possible to generate more zeros!

More in Tux Machines

Arduino Projects: Sun and Power Trackers

  • This sun tracker uses an Arduino to increase solar panel efficiency | Arduino Blog

    With the rapid pace of solar panel installations over the course of the previous decade, there has been an ongoing challenge of trying to improve their efficiency. Apart from the typical silicon crystal photovoltaic cells, there are also more efficient/expensive cells known as concentration photovoltaics (CPV), which rely on a set of mirrors to focus sunlight into a small multijunction cell. Although this technology reduces the size and material requirements, it also requires precise sun tracking for peak performance. Ruediger Loechenhoff has been able to create a far cheaper solar tracker controller, which relies on an Arduino Uno to drive a set of two motors that position the panel. To achieve this, the Uno was connected to a 9-axis MPU-9250 compass module for internal positioning, a DS3231 real-time clock for accurate timing, and a DIY shading beam sunlight sensor to detect optimal angles. Operating the tracker is also quite simple since the firmware only requires an occasional calibration step after a set number of days.

  • This Arduino device can anticipate power outages with tinyML | Arduino Blog

    Our reliance on electronic devices and appliances has never been higher, so when the power goes out, it can quickly become an unpleasant and inconvenient situation, especially for those who are unable to prepare in time. To help combat this problem, Roni Bandini has devised a device he calls “EdenOff,” which is placed inside an electrical outlet and utilizes machine learning at the edge to intelligently predict when an outage might occur. Developed with the use of Edge Impulse, Bandini began by creating a realistic dataset that consisted of three columns that pertain to different aspects of an outlet: its voltage, the ambient temperature, and how long the service has been working correctly. After training a model based on one dataset for regular service and the other for a failure, his model achieved an excellent F-1 score of .96, indicating that the model can forecast when an outage might take place with a high degree of accuracy.

LibreOffice and More

  • LibreOffice at the Univention Summit 2022

    After two years of pandemic restrictions, more and more in-person events are now taking place. Members of the LibreOffice community attended the recent Univention Summit 2022 in Bremen, northern Germany. They had a stand with LibreOffice merchandise, talked to visitors and answered questions.

  • May 2022, Month of LibreOffice Awards

    In May 2022, LibreOffice has received two Awards: SourceForge’s Open Source Project of the Month, and Software Informer’s Editor’s Pick.

  • Do While – Loop Example in Python | Mark Ai Code

    Loops are an important and widely utilized element in all current programming languages. A loop is the finest solution for automating a certain repeated operation or preventing yourself from writing repetitive code in your projects. Loops are sequences of instructions that are executed repeatedly until a condition is fulfilled. Let’s take a closer look at how Python loops function.

Proprietary Software and Microsoft Proxies

  • Patch now: Zoom chat messages can infect PCs, Macs, phones with malware

    Zoom has fixed a security flaw in its video-conferencing software that a miscreant could exploit with chat messages to potentially execute malicious code on a victim's device. The bug, tracked as CVE-2022-22787, received a CVSS severity score of 5.9 out of 10, making it a medium-severity vulnerability. It affects Zoom Client for Meetings running on Android, iOS, Linux, macOS and Windows systems before version 5.10.0, and users should download the latest version of the software to protect against this arbitrary remote-code-execution vulnerability. The upshot is that someone who can send you chat messages could cause your vulnerable Zoom client app to install malicious code, such as malware and spyware, from an arbitrary server. Exploiting this is a bit involved, so crooks may not jump on it, but you should still update your app.

  • SAP attracts further criticism for Russia presence, despite promise to leave

    A Ukrainian minister has accused software giant SAP of continuing to operate in Russia despite the German vendor previously vowing to withdraw from the aggressor nation. In the months following Russia's invasion of Ukraine, SAP attracted criticism as it continued to support installations of its software in Russia and cloud services used by Russian businesses, including state-owned bank Sberbank.

  • OpenLogic by Perforce: Why we support OSI [Ed: OSI boasts about being controlled by Microsofters]
  • OpenLogic by Perforce Announces Sponsorship of Rocky Enterprise Software Foundation [Ed: Microsoft proxy lays its hands on Rocky after it ran away from Microsoft]

Videos: Steam Deck, LinuxFX, Brave Beta on Debian 11, and Destination Linux 279