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today's howtos

  • Fair Internet bandwidth management on a network using Linux

    A while ago I wrote an OpenBSD guide to fairly share the Internet bandwidth to the LAN network, it was more or less working. Now I switched my router to Linux, I wanted to achieve the same. Unfortunately, it's not really documented as well as on OpenBSD.

    The command needed for this job is "tc", acronym for Traffic Control, the Jack of all trades when it comes to manipulate your network traffic. It can add delays or packets lost (this is fun when you want to simulate poor conditions), but also traffic shaping and Quality of Service (QoS).

  • Type-On Typewriter Animation in Nuke

    Users of AfterEffects are used to a plethora of presets for text animation. Unfortunately, text animation in Nuke is significantly limited in that the contents of the text field cannot be easily animated. I was working on producing a music video in which type-on text shows the lyrics in time with the music and ran into the limitation. I was not willing to mask letters individually using roto tools and instead decided to write a small python program that generates the animation in side of Nuke.

  • How to look up a Nix package's Nix store path from flake inputs

    Image generated by MidJourney -- The fall of the Archons, colored pencil drawing, fireball spell, bright sky, digital art, lake of fire

    Sometimes God is dead and you need to figure out what the version of a package in your Nix flake's inputs is. With flakes, you can figure this out using nix eval on a flake reference, but what the hecc is a flake reference?

  • How to Upgrade to Linux Mint 21 [Step by Step Tutorial]

    This is a regularly updated guide for upgrading an existing Linux Mint install to a new available version.

  • How to install BigBlueButton on Ubuntu 20.04 LTS Linux

    Learn the quick steps to install and configure BigBlueButton on Ubuntu 20.04 LTS Focal Fossa server to create your own web-based video conferencing platform free of cost.

    “BigBlueButton” or “BBB” is an open-source web-based video conferencing tool. This means that users have to enter the URL in the browser instead of downloading the program to their computer. With the free version of “BigBlueButton”, users can conduct video conferences, as well as host webinars and online presentations.

  • How to Install Sublime on Debian 11 | Mark Ai Code

    Sublime Text is a powerful text editor for creating code, narrative, and markup languages that are cross-platform. It’s coded in C++ and Python. The sublime text editor is compatible with a variety of programming and markup languages. It is often produced by the community and has many complex features such as window management and symbol indexing. It enables consumers and programmers to extend its capabilities by using various plugins.

    In this article, we will demonstrate how to install Sublime Text on Debian 11 “bullseye.” The Debian Terminal is used to run all of the commands listed here. Let’s get started with the installation.

More in Tux Machines

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