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today's howtos

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HowTos
  • How to Password-Protect Files and Folders on Linux

    Securing your files and directories with a strong password is a sure-fire way to prevent unauthorized access and snooping on Linux.

    Whether you want to share a file online, store it in the cloud, carry it on a thumb drive, or add it to your archive, password-protecting it is the best approach to secure its content and prevent unauthorized access.

    The same holds true for folders too. Therefore, it's crucial to encrypt them as well. On Linux, you have several ways to password-protect files and folders. Most of these methods use encryption, which offers additional protection than others.

  • How to Upgrade from Rocky Linux 8 to Rocky Linux 9

    This step-by-step guide shows you how to easily upgrade your existing Rocky Linux 8 system to Rocky Linux 9.

    Before we get into the technicalities, we need to state clearly the following. The procedure described in this guide has been tried and is workable; nevertheless, the official recommendation is that upgrading from Rocky Linux 8 to Rocky Linux 9 is not encouraged and that a clean install of Rocky Linux 9 is preferable.

    The Rocky Linux team does not recommend upgrades from one major version to the next (in this case 8.6 to 9.0). While it is technically possible to upgrade between major versions, we instead recommend a fresh install of the desired latest major version.

  • How to Play PS3 Games on PC with RPCS3
  • How to Install & Scan Viruses ClamAV on Ubuntu 22.04 | Mark Ai Code

    Clam AntiVirus (ClamAV) is a free and open source command line interface antivirus software tool. It is used to identify trojans and dangerous software, such as viruses. It can scan files rapidly and detect over one million viruses and trojans. One of its key applications is to scan emails on mail gateways. ClamAV is compatible with the following Linux operating systems: Ubuntu (20.04, 22.04), Debian (8,9), and CentOS (7,8). This article will go through how to install and use ClamAV on Ubuntu 22.04.

  • How To Install XnView MP on Ubuntu 22.04 LTS - idroot

    In this tutorial, we will show you how to install XnView MP on Ubuntu 22.04 LTS. For those of you who didn’t know, XnView MP is a versatile and powerful photo viewer, image management, image resizer and is compatible with more than 500 formats. XnView MP is a general-purpose application that is used by graphics designers at personal and commercial level.

    This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the XnView image viewer on Ubuntu 22.04 (Jammy Jellyfish). You can follow the same instructions for Ubuntu 22.04 and any other Debian-based distribution like Linux Mint, Elementary OS, Pop!_OS, and more as well.

  • Running Multiple Commands At Once in Linux – TecAdmin

    We’ll learn about how to execute several commands simultaneously in Linux in this article. Every operator has its own advantages when it comes to separating commands. This tutorial will help a little bit in improving how we execute commands and author shell scripts.

    The Linux operating system offers a simple command line interface for managing the system. There are shells such as Bash, CSH, and Zsh that accept commands from the user and route them to the kernel. A command is used to perform some function on the system. We may also specify multiple shells at once and execute them one after the other.

    There are three distinct options available using the separator operators. In the following section, we will look at them in detail.

  • Running a Cron job every Sunday (Weekly) – TecAdmin

    Many of the applications required weekly cron jobs to perform a few tasks. For example, perform weekly maintenance, cleanup disk spaces, cleanup mailing list, and other tasks. You may run your weekly tasks on any day of the week. CPU and memory consumption is required for jobs that require a CPU and memory. Those jobs are best to run on a weekend day.

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