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today's howtos

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  • How to Install Jitsi Meet Video Conferencing Server on Ubuntu 22.04

    Jitsi is a free and open-source chat, telephony, and video conferencing tool. It is a very good alternative to other tools like Skype, Zoom, and Microsoft Teams. In this post, we will show you how to install Jitsi Meet on Ubuntu 22.04 server.

  • Sizing Up Partitions » Linux Magazine

    Partitioning is a basic step in any Linux installation. Many users breeze past it, content to let the installer use a single partition, or else to accept its recommendations without much thought, sparing themselves the stress of learning yet another task. However, manually partitioning can help to isolate directories from each other, optimize performance, and aid in recovery when troubles arise. If manual partitioning takes some extra time, down the line, you might be glad you make the extra effort.

    As you probably know, Linux is organized into a series of directories, each with its own purpose. Directories can be on the same device, or else a mount point for a separate device. In either case, users are presented with a single directory tree. Usually, each device will be formatted with ext4, although recent Fedora releases default to Btrfs, or on servers, XFS. On systems that include a Windows installation, an ntfs or fat32 partition is included. Partitioning is done on a blank system, or from an external device so that no partition is mounted. Older tools such as fdisk are still around, but today's most common tools are parted (Figure 1) or gparted, its graphical equivalent.

  • How to Install KDE Plasma Desktop Environment on Debian 11 - ByteXD

    Unlike most operating systems like Windows or macOS, which come with only a single Desktop system, Linux supports multiple Desktop Environments.

    For example, on Windows, you only have an option to change the wallpaper and tweak a few UI settings. On the other hand, Linux allows you to change the entire Desktop system and use one that meets your needs. This post will focus on one Linux distribution – Debian 11.

    The default Desktop Environment for Debian systems is GNOME. However, nowadays, users can install multiple Desktop Environments of their choice when doing a fresh installation of Debian. This post will give you a detailed guide on how to install KDE Plasma desktop environment on Debian 11.

    Before we dive into the article, we need to understand two terms commonly used before we proceed with the installation – KDE and KDE Plasma.

  • How to install LibreOffice on Linux Mint

    LibreOffice is one of the best office productivity suite pack for Linux, it is free and open source. It basically has everything that you need, whether you need to write documents, create pdfs , creating presentations, invoices and much more...then LibreOffice is the way to go.

    In this tutorial you will learn how to install LibreOffice on Ubuntu/Debian based systems.

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today's howtos

  • How to Change Comment Color in Vim – Fix Unreadable Blue Color

    Are you annoyed about the comment color in vim? The dark blue color of the comment is often hard to read. In this tutorial, we learn how to change the comment color in Vim. There are few methods we can use to look vim comment very readable.

  • How to Add Repository to Debian

    APT checks the health of all the packages, and dependencies of the package before installing it. APT fetches packages from one or more repositories. A repository (package source) is basically a network server. The term "package" refers to an individual file with a .deb extension that contains either all or part of an application. The normal installation comes with default repositories configured, but these contain only a few packages out of an ocean of free software available. In this tutorial, we learn how to add the package repository to Debian.

  • Making a Video of a Single Window

    I recently wanted to send someone a video of a program doing some interesting things in a single X11 window. Recording the whole desktop is easy (some readers may remember my post on Aeschylus which does just that) but it will include irrelevant (and possibly unwanted) parts of the screen, leading to unnecessarily large files. I couldn't immediately find a tool which did what I wanted on OpenBSD [1] but through a combination of xwininfo, FFmpeg, and hk I was able to put together exactly what I needed in short order. Even better, I was able to easily post-process the video to shrink its file size, speed it up, and contort it to the dimension requirements of various platforms. Here's a video straight out of the little script I put together: [...]

  • Things You Can And Can’t Do

    And it got me thinking about what you can and can’t do — what you do and don’t have control over.

  • allow-new-zones in BIND 9.16 on CentOS 8 Stream under SELinux

    We run these training systems with SELinux enabled (I wouldn’t, but my colleague likes it :-), and that’s the reason I aborted the lab: I couldn’t tell students how to solve the cause other than by disabling SELinux entirely, but there wasn’t enough time for that.

  • Will the IndieWeb Ever Become Mainstream?

    This is an interesting question, thanks for asking it, Jeremy. I do have some history with the IndieWeb, and some opinions, so let’s dive in.

    The short answer to the question is a resounding no, and it all boils down to the fact that the IndieWeb is really complicated to implement, so it will only ever appeal to developers.

  • How to Install CUPS Print Server on Ubuntu 22.04

    If your business has multiple personal computers in the network which need to print, then we need a device called a print server. Print server act intermediate between PC and printers which accept print jobs from PC and send them to respective printers. CUPS is the primary mechanism in the Unix-like operating system for printing and print services. It can allow a computer to act as a Print server. In this tutorial, we learn how to set up CUPS print server on Ubuntu 22.04.

Open Hardware: XON/XOFF and Raspberry Pi Pico

  • From XON/XOFF to Forward Incremental Search

    In the olden days of computing, software flow control with control codes XON and XOFF was a necessary feature that dumb terminals needed to support. When a terminal received more data than it could display, there needed to be a way for the terminal to tell the remote host to pause sending more data. The control code 19 was chosen for this. The control code 17 was chosen to tell the remote host to resume transmission of data.

  • Raspberry Pi Pico Used in Plug and Play System Monitor | Tom's Hardware

    Dmytro Panin is at it again, creating a teeny system monitor for his MacBook from scratch with help from our favorite microcontroller, the Raspberry Pi Pico. This plug-and-play system monitor (opens in new tab) lets him keep a close eye on resource usage without having to close any windows or launch any third-party programs. The device is Pico-powered and plugs right into the MacBook to function. It has a display screen that showcases a custom GUI featuring four bar graphs that update in real-time to show the performance of different components, including the CPU, GPU, memory, and SSD usage. It makes it possible to see how hard your PC is running at a glance.

Security Leftovers

How to Apply Accent Colour in Ubuntu Desktop

A step-by-step tutorial on how to apply accent colour in Ubuntu desktop (GNOME) with tips for Kubuntu and others. Read more