today's howtos

posted by Roy Schestowitz on Jul 20, 2023

• Non-uniform CPU hyperthreading is here and can cause fun issues

  These new GPU machines have Intel i9-13900K CPUs. Modern higher end Intel desktop CPUs have a split core model, with a mix of better 'performance' cores and more power efficient 'efficient' cores. The 'efficient' cores are lower performance and don't have hyperthreading. In the case of the i9-13900K, the split is 8 performance and 16 efficient cores; with hyperthreading on, you have 8 performance cores, 8 extra logical CPUs from the hyperthreads on those cores, and then 16 efficient cores, for a total of 32.

• Build a website in an hour event

  I will be hosting a "Build a website in an hour" event on July 29th at 5pm UK time (9am PT). Here is the event description: [...]

• Visually hidden links with 0 dimensions

  If you have used a visually-hidden class in the past, you might have noticed that the width and height is set to 1px and not 0. I’ve always wondered why.

  Even in James Edwards’ “The anatomy of visually-hidden” I didn’t find the answer because he wasn’t sure either. While testing a client’s site a few minutes ago, I found at least one good reason.

• Installing Debian bookworm without systemd

  This is pleasingly straightforward, albeit with an ugly wart. This recipe was not formally developed and tested; it’s just what happened when I tried to actually perform this task.

  The official installation guide has similar instructions although they don’t seem to have the initramfs workaround.

• Using Until Loop in Bash

  Loops are fundamentals of any programming language and so for the bash.

• What To Do After Installing Debian 12 Bookworm

  This advisory tutorial will help your first time using your computer powered with Debian 12. This tutorial complements our previous Debian 12 GNOME Install Guide we practiced together. We compiled five simple tips and tricks below for you. Happy working with Debian!

• How to View Colored Man Pages in Linux

  In Unix-like operating systems, a man page (in full manual page) is a documentation for a terminal-based program/tool/utility (commonly known as a command). It contains the name of the command, syntax for using it, a description, options available, author, copyright, related commands etc.

  You can read the manual page for a Linux command as follows; this will display the man page for the df command...

• 3 Methods to Check Apache Server Status and Uptime in Linux

  Apache is the world’s most popular, cross-platform HTTP web server that is commonly used in Linux and Unix platforms to deploy and run web applications or websites. Importantly, it’s easy to install and has a simple configuration as well.

  In this article, we will show how to check Apache web server uptime on a Linux system using different methods/commands explained below.

• How to Use Man Pages Efficiently in Linux

  Good documentation is absolutely necessary for any software, and this principle extends to Linux commands as well.

  Numerous Linux distributions and open-source communities offer comprehensive documentation that is readily accessible on the Internet.

• How to Find Most Used Disk Space Directories and Files in Linux

  As a Linux administrator, you must periodically check which files and folders are consuming more disk space. It is very necessary to find unnecessary junk and free it up from your hard disk.

  This brief tutorial describes how to find the largest files and folders in the Linux file system using the du (disk usage) and find commands. If you want to learn more about these two commands, then head over to the following articles.

• How to Create and Use Alias Command in Linux

  Linux users often need to use one command over and over again. Typing or copying the same command over and over again reduces your productivity and distracts you from what you are supposed to be doing.

  You can save yourself some time by creating aliases for your most commonly used commands. Aliases are like custom shortcuts that represent a command (or set of commands) that can be executed with or without custom options. Chances are you are already using aliases on your Linux system without even knowing it.

• How to find SAN LUN Mapped to VxVM Disk in Linux

  We’ve written several articles in the past to find LUN ID mapped to Block device/disk...

• How To Allow Or Deny Sudo Access To A Group In Linux

  This step-by-step tutorial explains how to allow or deny sudo access to a group in Linux for improved Linux security and efficient group management.

• How to Install Plex Media Server in Ubuntu

  Are you looking for a guide to installing the Plex Media Server on your Ubuntu 22.04 or Ubuntu 20.04? So that you can easily access,

• How to Install Microsoft Office on Ubuntu [Ed: In 2023 this is unlikely to have any practical need]

  So, you’re using Ubuntu, the cool Linux operating system, but you also need Microsoft Office? No problem! Just use this super simple solution to install

• How to Install VirtualBox on Debian 12 (Bookworm)

  Learn how to easily install VirtualBox on Debian 12 (Bookworm) with our step-by-step guide, and start virtualizing your systems today!

• How to Install OpenSUSE "Tumbleweed"

  OpenSUSE is a free and open source linux distro, which uses rpm as package manager.

  OpenSUSE is available in two different versions, Tumbleweed the version that we are going to install on this tutorial, and leap.

• How to change hostname in OpenSUSE

  In this tutorial, you will learn how to change the hostname on OpenSUSE.

• How To Set Up a Firewall with UFW on Debian 12

  If you're using Debian 12, you can easily manage your firewall with the help of Uncomplicated Firewall (UFW). UFW interface simplifies firewall management and handles the complexities of packet filtering technologies like iptables and nftables. It's a great option for beginners who want to set up a firewall. In this tutorial, we'll guide you through installing UFW in Debian Linux 12, configuring it to allow SSH, HTTP, HTTPS, and other connections, and enabling it to block unauthorized traffic.

• Fedora Magazine: How to Install and Update Fedora Linux on Android using Termux

  If you’re interested in running Linux on your Android device, you’re in luck! It’s possible to install Fedora Linux on Android using Termux. Termux is a terminal emulator for Android that allows you to run Linux commands and utilities on your phone or tablet. It does not replace Android. In this article, we’ll walk you through the process of installing Fedora Linux on Android using Termux and show you how to keep it up to date with the latest versions.

• Installing and Using Wget on Linux Like a Pro

  In this article, you will explore the power of the wget command, discover the key features of wget, learn how to easily install it on major Linux distributions, and gain hands-on experience with practical examples. Tutorial Details Description Wget Difficulty Level Low Root or Sudo