today's howtos

posted by Roy Schestowitz on Jun 11, 2023

• A potential issue with outstanding query limits in your DNS resolver

  A while back we had a little incident where our internal forwarding DNS resolvers stopped resolving internal names. This started happening very shortly after the university's general Internet connectivity was interrupted, and while I believe we're not entirely sure about the root cause, we have a theory that feels plausible. That theory is limits in outstanding queries and generally rate limits in the DNS resolver that our internal forwarding DNS servers were running.

• How to Use the Cat Command in Linux [22 Useful Examples]

  The cat (short for “concatenate“) command is one of the most frequently used commands in Linux that comes pre-installed in most Linux distribution systems and is primarily used to display the content of existing files.

  Moreover, the cat command can be utilized by the user to concatenate multiple files, create new files, append content to existing files, view the content of a file, and redirect output in the terminal or files.

• Fuzzy File Search in Linux

  Modern tools like fzf and fzy take the file search in Linux terminal to the next level.

• How to create a wifi hotspot on Debian 12 "Bookworm"

  In this tutorial, you will learn how to know if your wifi card or usb dongle supports the ap mode, which allows you to create a hotspot connection, and if yes you will also learn how to create one very easily by following the steps below.

• What is Power-On Self-Test (POST)?

  The Power-On Self-Test, commonly known as POST, is a critical part of a computer’s startup sequence. This built-in diagnostic program checks your computer’s hardware to ensure everything is functioning correctly before the operating system begins to load.

• How to Create and Use Bash Functions in Linux

  Learn how to create and use Bash functions in Linux to enhance your scripting skills. Improve code organization, efficiency, and reusability with this comprehensive guide.

• Explore the Universe with Raspberry PI and Stellarium

  In this tutorial, I will show you how to install Stellarium on a Raspberry PI computer board and how to start using it.

• How to locate empty files and folders in Linux

  When managing files in a Linux system, it's often necessary to find and possibly remove empty files and folders to conserve disk space and keep your system organized. Whether you're an experienced Linux user or a beginner, this guide will teach you how to find all empty files and folders within a specific directory, making file management easier and more efficient.

• How to Install PHP-IMAGICK on Debian 12/11/10

  When it comes to manipulating images in PHP, developers are often faced with a wealth of choices. While the built-in GD library has its merits, there exists a truly powerful, adaptable, and comprehensive tool for the job: the PHP-IMAGICK extension.

• How to Install Docker CE on Debian 12/11/10

  Docker Community Edition (Docker CE) represents an integral part of the modern technology stack, and its significance extends beyond mere buzzwords.

• How to Install Xfce on CentOS Stream 9/8

  The XFCE Desktop Environment is an impressive, lightweight graphical user interface (GUI) for Unix-like operating systems. It strives to adhere to two main principles -- simplicity and performance.

• How To Build an Air Quality Alert Light with Raspberry Pi Pico

  The air we breathe is important, so make sure that you know what the air is like before you leave your home. This quick and simple project will do just that, using RGB LEDs to give you a heads up.

• How to Copy Files and Directory in Linux?

  File handling is one of the most crucial responsibilities of a Linux System Administrator. One important concept in file handling is to copy files and directories to the same and other directories.  If you have trouble copying directories or files in Linux or Unix-based OS like macOS, this post will guide you.

• How To Install RawTherapee on Fedora 38

  In this tutorial, we will show you how to install RawTherapee on Fedora 38. Are you a photography enthusiast looking for powerful yet free image-processing software? Look no further than RawTherapee! This amazing open-source tool is perfect for both beginners and professionals, and it's available on multiple platforms, including Linux, Windows, and Mac OS.

• 5 Best and Cheap DayZ Server Hosting Reddit (Top Picks)

  As an avid DayZ enthusiast, selecting the right server hosting provider is critical to ensuring a seamless and enjoyable gameplay experience.

• What Exactly Is Harbor?

  Harbor is a cloud-native container registry developed by VMware. It enables users to store, organize, and share Docker images.

• Deleting Specific Lines from Linux Files: A Practical Guide

  Linux, a robust, flexible, and open-source operating system, is a favorite among many system administrators and developers due to its powerful command-line tools. One important ability of these tools is the manipulation of files, including the deletion of specific lines from a file.

• Deleting Last N Lines From a File in Linux

  In this article, we will discuss multiple ways to delete the last N lines from a file in Linux. For this purpose, we will use various Linux utilities like sed, awk, and head.

• Deploy a Kubernetes Development Environment with Kind

  Let me set the stage: You're just starting your journey into Kubernetes and you're thrilled at the idea of developing

• How to upgrade Debian 11 to Debian 12 bookworm using CLI

  Debian Linux 12 "Bookworm" has been released. The new version offers updated packages and five years of support. This page provides a step-by-step guide to updating Debian 11 Bullseye to Debian 12 Bookworm using command-line options, including upgrading all installed packages.

• Installing Flask on Ubuntu 22.04 or 20.04 LTS Linux

  Introduction: A step-by-step guide for installing Flask Python web framework on Ubuntu Linux systems. Flask is for web developers as it provides a micro web framework based on Python. It is popular because of its simplicity, flexibility and does not require particular tools or libraries.

• 10 Best Free Console-Based Diff Tools

  File comparison compares the contents of computer files, finding their common contents and their differences. The result is known as a diff.