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today's howtos

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  • Create Btrfs Snapshots With Snapper In openSUSE - OSTechNix

    Btrfs is a Linux filesystem that has been adopted as the default filesystem in popular Linux distributions such as openSUSE and Fedora. It has many unique features that are not available in other filesystems. It is based on copy-on-write, allowing for efficient filesystem snapshots and clones. In this guide we will see whats is Snapper, and how to create Btrfs filesystem snapshots with Snapper on openSUSE Linux.

  • : SAML SSO in Univention UCS Server

    The official HowTo on setting up SAML SSO basically covers the process of setting it up, but my impression was, that this process can be made better, less error-prone and more reproducible by automatting the setup.

    So I wrote in my spare time a small shell script to follow the instructions from the official HowTo and after many tests and enhancements, I released the script on Codeberg:

  • Screencasts not recording in Ubuntu 22.04 LTS? Here's how to fix that - Neowin

    Last week, Canonical released Ubuntu 22.04.1 LTS, which finally opened the upgrade path to users on Ubuntu 20.04 LTS. One of the big changes between the two versions is the screenshot tool, which also has a built-in screen recorder called screencast. Unfortunately, there’s a bit of an issue with it that can be fixed with a simple command.

  • 3 Ways to install Steam on Linux Mint or LMDE - Linux Shout

    Here we learn the commands to install and use Steam client’s latest version on Linux Mint based on Ubuntu or LDME Debian based to play games.

    Steam software is the largest online distribution platform for computer games and is available for Windows, Linux, and macOS. Steam comes from developer Valve and has more than 100 million active users.

    The online platform Steam is ostensibly a distribution platform for software, PC games, and series or movies. The platform is developed by the company Valve and has several million active accounts, according to its information

    Even though it is available for Linux, that doesn’t mean all the games available on it can be played on Linux Distros. Only games that are originally published by the developers with Linux support can be. Yes, indeed as compared to Windows the numbers of the games are not much for Ubuntu or other Linux distributions but whatever is there yet a good source to satisfy the binge of gaming on open source platforms. The games are protected with DRM.

  • How to play Call to Arms on Linux

    Call to Arms is a hybrid 3rd person/1st person strategy game for PC. It was developed and published by Digitalmindsoft for Windows. However, with some tweaks, you can play it on Linux. Here’s how to get it working on your system.

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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