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today's howtos

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HowTos
  • History command in Linux with examples | FOSS Linux

    The history command in Linux is no complex jargon. It is exactly what you think it is, and there is no hidden meaning behind it. The same way you look at your browser history after a long day on the internet is how you perceive the history command. It is all about tracking your previous movements and actions, but in this case, it’s on a Linux terminal or command line.

  • How to Configure Color Temperature in GNOME Night Light - Make Tech Easier

    You probably already know that the screens from electronics give off a blue light that tricks our brains into thinking it’s broad daylight. This can interrupt sleep patterns and cause eye strain, which is definitely not good for your overall health. This is especially prominent in today’s work- and school-from-home life where we look at computer screens for eight hours a day. It’s good to have tools around to help change the color of monitors. There are many programs that will do that. This article will introduce you to one of them on Linux and show you how to configure color temperature in GNOME Night Light.

  • How To Install FreeIPA on CentOS 8 - idroot

    In this tutorial, we will show you how to install FreeIPA on CentOS 8. For those of you who didn’t know, FreeIPA is an open-source identity management system for Linux/Unix environments that provides centralized account management and authentication, like Microsoft Active Directory or LDAP.

    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 through the step by step installation of FreeIPA on CentOS 8.

  • Nginx Redirect HTTP to HTTPS – Linux Hint

    Nginx, pronounced as “Engine x”, is a free, open-source Linux-based high-performance web and a reverse proxy server that is responsible for managing and handling the load of the largest websites traffic on the internet. Nginx is a powerful redirecting tool that can be configured easily on your system to redirect the less secure or unencrypted HTTP web traffic to an encrypted and secured HTTPS web server. If you are a system administrator or a developer, then you are using the Nginx server regularly.
    In this article, we will work on how to redirect the web traffic from HTTP to a secure HTTPS in Nginx.

    The responses and requests are returned in the form of plaintext in HTTP, whereas the HTTPS uses SSL/TLS to encrypt the communication between the client and server system.

  • How to Install and Create a Blog with Hexo on Ubuntu 20.04

    Hexo is a static blogging framework built on Node.js, it allows you to write posts in Markdown format. In this tutorial, you will learn how to Install Hexo and use it to create a blog on Ubuntu 20.04 based server.

  • Bash printf Command Examples [Better Than Echo]

    The simplest way to print in Linux command line is by using echo command.

    echo "Value of var is $var"
    However, echo command won't be adequate when you need to print formatted output.

    This is where printf command helps you. The bash printf command operates like the printf command in C/C++ programming language.

    printf "My brother %s is %d years old.\n" Prakash 21
    Can you guess the output?

  • Display Ping Command Output In Graph Format Using Gping - OSTechNix

    This guide talks about the brief history of ping utility and how to display ping command output in graph format using gping tool in Linux.

  • "Where's my C:\ Drive?" | The Linux File System Explained! - YouTube

More in Tux Machines

AMD Linux 5.12 and Linux 5.10.20

Ubuntu: Unbreaking Unbootable Ubuntu, Snaps Shrunk and More

  • Unbreaking Unbootable Ubuntu

    I run Ubuntu Hirsute - the development release which will become 21.04 - on a bunch of systems. It’s a trade-off though, getting the latest crack each and every day. Being at the bleeding edge of new packages landing means I can experience brand new shiny bugs on my systems. Bugs like 1915579 which rendered my system unbootable.

  • Honey, I Shrunk the Snap! | Ubuntu

    The year is 1989. I bought a computer game called F-16: Combat Pilot, a flight simulator featuring free-flight, five types of single-player missions, a full campaign mode, serial-port multiplayer, and then some. Gloriously wrapped in four colors and magnetized on two single-density 5.25-inch floppy disks. Total size: 680 KB. Nowadays, it is not uncommon for individual applications to weigh dozens if not hundreds of megabytes. But it doesn’t have to be that way. In Linux, you can save some space by using libraries that are shared across multiple applications (hence their name, shared libraries). When it comes to self-contained application formats like snaps, the tables are turned once again, as snaps bundle all the necessary dependencies inside, and thus take more disk space. If you want to make your snapped applications as small and lean as possible, we have a few neat suggestions. [...] The final artifact of the snap build process is a compressed squashFS file, with the .snap suffix. Originally, snaps were compressed using the xz algorithm, for highest compatibility with the widest range of devices. More recently, in order to help speed us snap launch times, we also introduced the use of the lzo algorithm, which results in 2-3x application startup times improvements. The main reason for this is the lesser compression used in lzo compared to xz, meaning the system needs fewer CPU cycles, and thus less time, to uncompress the snap on the system. However, it also introduces size inflation. [...] Disk utilization matters less now than it did a decade or two ago, but you can still try to make your applications small and tidy. This also helps reduce bandwidth usage, improves portability, and if you’re using system backups, reduces the time needed to copy all the relevant data. With snaps, there are many ways you can trim down on the digital excess, including the use of extensions, sparing use of necessary runtime dependencies, and pruning the extras from the prime directory. Not only will your snaps be smaller in size, you will also ensure higher consistency, better system integration and improve the application startup time. All these are important, highly noticeable elements of the user experience. If you have any other suggestions or ideas on how to conserve space or optimize snap creation, please join our forum and share your thoughts.

  • Canonical keynote at Embedded World 2021: Bosch Rexroth achieves complete IoT automation with Ubuntu Core

    series that’s already being used in the current stable release, Ubuntu 20.10 (Groovy Gorilla). But that good news I want to share with you today is the fact that Ubuntu 21.04 will also offer several apps from the GNOME 40 stack.

  • Bad Voltage 3×24: Weaponised Rooster

    Stuart Langridge, Jono Bacon, and special guest star Alan Pope present Bad Voltage, in which we are large and in charge, there is ancient history about electricians and phones...

IBM/Red Hat: Kafka Monthly Digest, Red Hat Upselling, and Cockpit 239

  • Kafka Monthly Digest – February 2021

    This is the 37th edition of the Kafka Monthly Digest! In this edition, I’ll cover what happened in the Apache Kafka community in February 2021.

  • 5 ways Red Hat Insights can improve your sysadmin Life

    The way we do things is changing fast. This has become a necessity as our systems get more complex, our workloads evolve, and our deployments rapidly grow in size. Thanks to the innovations brought about by openness and collaboration, we can develop tools and services to cope with these quickly evolving times. For us to reap the benefits of these advancements, we should open ourselves to carefully exploring how various tools suit our requirements and fit into or change our norms. By doing so, we may simplify a lot of our mundane tasks, reduce overhead, and address the major pain points in our operations. Having worked as a sysadmin in the past, I've discovered many automation tools and services that have made my life easier. One of the most recent is Red Hat Insights. In this article, I share five ways this service that is included with your Red Hat Enterprise Linux (RHEL) subscription can improve your life as an admin.

  • Cockpit Project: Cockpit 239

    Cockpit is the modern Linux admin interface. We release regularly. Here are the release notes from Cockpit version 239.

LibreOffice 7.1.1 Community available for download

LibreOffice 7.1.1 Community, the first minor release of the LibreOffice 7.1 family, targeted at technology enthusiasts and power users, is available for download from https://www.libreoffice.org/download/. LibreOffice 7.1.1 includes over 90 bug fixes and improvements to document compatibility. For enterprise-class deployments, TDF strongly recommends the LibreOffice Enterprise family of applications from ecosystem partners, with long-term support options, professional assistance, custom features and Service Level Agreements: https://www.libreoffice.org/download/libreoffice-in-business/. LibreOffice Community and the LibreOffice Enterprise family of products are based on the LibreOffice Technology platform, the result of years of development efforts with the objective of providing a state of the art office suite not only for the desktop but also for mobile and the cloud. Products based on LibreOffice Technology are available for major desktop operating systems (Windows, macOS, Linux and Chrome OS), mobile platforms (Android and iOS) and the cloud. They may have a different name, according to each company brand strategy, but they share the same LibreOffice unique advantages, robustness and flexibility. Read more