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today's howtos

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HowTos
  • Why an empty (executable) file is generally true in Unix

    A shell that doesn't claim to be POSIX compatible doesn't have to have this 'pass files to sh' behavior, but if it lacks it, some number of random programs will probably fail to get run some of the time. On the whole I suspect that most alternate shell authors implement the behavior for compatibility.

  • Filesystems versus general tree structures

    More broadly, I think it's a mistake to look at filesystems through the eyes of general tree structures. Filesystems originated in a very constrained situation and continue to be focused on fairly constrained one, one where any indirect reference to something is very slow and the less that you need to access the better.

  • How to Open, Extract and Create RAR Files in Linux

    RAR is the most popular tool for creating and extracting compressed archive (.rar) files. When we download an archive file from the web, we required a rar tool to extract them.

    RAR is available freely under Windows operating systems to handle compressed files, but unfortunately, rar tool doesn’t pre-installed under Linux systems.

  • Monitorix – A Linux System and Network Monitoring Tool

    Monitorix is an open-source, free, and most powerful lightweight tool designed to monitor system and network resources in Linux. It regularly collects system and network data and displays the information in graphs using its own web interface (which listens on the port 8080/TCP).

    Monitorix allows for monitoring overall system performance and also helps in detecting bottlenecks, failures, unwanted long response times, and other abnormal activities.

  • Why I love Tig for visualizing my Git workflows

    If you find navigating your Git repositories frustratingly complex, have I got the tool for you. Meet Tig.

    Tig is an ncurses-based text-mode interface for Git that allows you to browse changes in a Git repository. It also acts as a pager for the output of various Git commands. I use this tool to give me a good idea of what’s been changed in which commit by whom, the latest commit merged, and so much more. Try it for yourself, starting with this brief tutorial.

  • Manage your files in your Linux terminal with ranger

    The most basic way to look at your files and folders is to use the commands ls and ll. But sometimes, I want to see not just the file metadata but also the contents of a file at a glance. For that, I use ranger.

    If you love working out of your console and using Vim or Vi, and you don’t want to leave your terminal for any reason, ranger is your new best friend. Ranger is a minimal file manager that allows you not only to navigate through the files but also to preview them. Ranger comes bundled with rifle, a file executor that can efficiently choose programs that work with a given file type.

  • How To Install JASP (an SPSS Alternative) on Ubuntu 22.04 and Later

    This article will explain in step by step to install JASP free software on Ubuntu 22.04 LTS Jammy Jellyfish. With this, you will have a Libre and Open Source alternative to SPSS, the statistical analysis program used in universities. Let's install it.

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