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today's howtos

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HowTos
  • How do I Install an Entire Ubuntu on a USB Flash Drive? – Linux Hint

    Among all the Linux distros out there, Ubuntu is one of the most well-known and popular ones. Maintained by Canonical, Ubuntu is a Debian-based distro with tons of additional features. It’s a distro that can meet the needs of all sorts of workloads, be it casual or professional.
    Linux is an operating system that can run on almost any hardware. Thanks to its lower hardware resource requirement (depends on the distro, but on average, still lower), you can run it on even the most potato computer you can find in your attic.

    In this guide, let me demonstrate to you just that. Of course, it’s not something crazy, but really fun.

    Check out how to install an entire Ubuntu system on a USB flash drive.

  • What is MongoDB? How Does MongoDB Work?

    MongoDB is an open-source, modern, general-purpose, document-based distributed database management system developed, distributed, and supported by MongoDB Inc.

  • OpenStack Cluster Installer: the Debian way to deploy OpenStack
  • How to speed up Blender rendering – Linux Hint

    Blender, which was first launched in 1995 by Ton Roosendaal, a developer from the Netherlands, is a powerful 3D creation tool used to create 3D graphics, interactive 3D apps, video games, virtual reality videos, and animations. It has been available as an open-source software since 2002, and it runs on popular operating systems like macOS, Linux, and Windows. Blender has many features, and it can be used for 3D modeling, texturing, shading, rigging, particle simulation, sculpting, motion graphics, and compositing.

    Blender is easy to learn, and it has the support of a huge community. Blender is a very robust application, and its modeling, sculpting, and viewport navigation functions are smooth. However, for scenes with many 3D assets, glossy shaders, high-definition textures, particles, and volumetric lights, a significant amount of time is required for rendering. However, the time required for rendering can be reduced by employing the proper renderer settings. In this article, we will discuss methods for reducing the rendering time in Blender, and the effects of these methods on the final result.

    Rendering a scene in Blender is different than rendering an image in a photo editor or a video from a video editor. There are many factors to consider before rendering in Blender to avoid wasting time. For example, Blender (version 2.8) comes with two rendering engines: Eevee and Cycles. Eevee is much faster than Cycles, and it has lower time and resource requirements; however, while Eevee is a real-time viewport port renderer, Cycles is a ray-tracing rendering engine that achieves better results. A rendering engine can be selected based on personal preference, but professional designers tend to prefer Cycles due to its accuracy and realism, despite its higher time requirements.

  • How to Use the SAR Command in Linux: A Full Tutorial for Beginners – Linux Hint

    If you are a system administrator, then you probably perform many tasks related to monitoring, logging, and auditing. For such tasks to be completed successfully, all system activities must be recorded. Luckily, the Linux operating system provides the system activity reporter (SAR) command. The SAR command, which is used to track the activities performed in a computer system, is very useful to understand because it can facilitate various tasks related to system administration. This tutorial provides an in-depth look into Linux’s SAR command for beginners, beginning with the installation process. Please note that, for this tutorial, we use Linux Mint 20.

  • How to Copy a Folder in Linux? – Linux Hint

    The files and folders are commonly used in any operating system. At times, your folder contains some crucial data, and you prefer to keep several backup copies. The first solution that comes to our mind is to copy that folder somewhere else. Therefore, in this article, our target is to figure out all the methods of copying a folder in Linux, i.e., both the CLI-based methods and the GUI-based methods.
    Note: For explaining the different methods of copying a folder in Linux, we have made use of Linux Mint 20.

  • Configure Ansible and Run ad-hoc Commands

    In the first part of the Ansible series, you got acquainted with Ansible and learned to install it.

    In this tutorial, you will learn how to manage static inventory in Ansible. You will also understand various Ansible configuration settings.

    Furthermore, you will explore few Ansible modules and you will get to run Ansible Ad-Hoc commands.

More in Tux Machines

Mozilla/Firefox: CRLite, Firefox 83 and TenFourFox

  • Querying CRLite for WebPKI Revocations • Insufficient.Coffee

    Firefox Nightly is now using CRLite to determine if websites’ certificates are revoked — e.g., if the Certificate Authority published that web browsers shouldn’t trust that website certificate. Telemetry shows that querying the local CRLite dataset is much faster than making a network connection for OCSP, which makes intuitive sense. It also avoids sending the website’s certificate information in cleartext over the network to check the revocation status: solving one of the remaining cleartext browsing data leakages in Firefox. Mozilla is currently publishing CRLite data to Remote Settings four times per day, keeping a very fresh set of revocation information for the public Web. I’ve provided some direct details on how to get at that data from the CRLite FAQ, and I want to introduce one of my command-line tools I’ve used to analyze and play with the dataset: moz_crlite_query. I’ll introduce crlite_status in a later post.

  • Firefox 83 Introduces HTTPS-Only Mode

    According to Mozilla, “the web contains millions of legacy HTTP links that point to insecure versions of websites. When you click on such a link, browsers traditionally connect to the website using the insecure HTTP protocol.” With HTTPS-Only Mode enabled, Firefox will attempt to establish HTTPS connections to every website and will ask for permission before connecting to a site that doesn’t support secure connections. Even if you click on an HTTP link or manually enter an HTTP address, Firefox will use HTTPS instead.

  • TenFourFox Development: TenFourFox FPR30b1 available

    TenFourFox Feature Parity Release 30 beta 1 is now available (downloads, hashes, release notes). I managed to make some good progress on backporting later improvements to the network and URL handling code, so there are no UI-facing features in this release, but the browser should use a bit less memory and run a little quicker especially on pages that reference a lot of resources (which, admittedly, is a lot of sites these days). There is also a minor update to the host database for basic adblock. Assuming all goes well, this release will come out parallel with Firefox 84 on or around December 15. I'll probably do an SPR-only build for the release immediately following to give myself a break; this will contain just needed security fixes, and there will most likely not be a beta.

Music Production on Guix System

The working title “Ode to One Two Oh” was an obvious choice, being a quasi-palindrome, and its five syllables suggested a time signature of 5/4. Where to from here? As I stared at my Emacs session with a Guile REPL (read, eval, print, loop) buffer I tried to recall what the letters “REPL” stand for. Clearly, in my case the “P” was for “Procrastination”, but what about the others? I had stumbled upon the chorus: a description of the Guix development process. Contribute as others before us have shared their contributions (Reciprocation), review patches and discuss (Evaluation), hack on something else (Procrastination), and repeat (Loop). The words suggested a simple descending melody, which would need to be elevated by a somewhat less simple chord progression. After trying out a few harmonies on the Grand Stick I remembered how terrible my memory was and decided that I would need to scatter the harmonies onto a canvas, listen to the whole progression, and adjust the lines as needed — all without having to build up muscle memory for harmonies and progressions I may very well end up discarding in the process. This is where my composition workflow probably deviates from most other people. Many would use a MIDI sequencer for that kind of approach, whereas I decided to hone in on the exact harmonies with an unlikely tool: the unparalleled music engraving application Lilypond. Lilypond sports a versatile language that covers primitive note input, the means of combining them to larger phrases and musical ideas, and the means of abstraction — it allows for musical ideas to be named and recombined in different shapes. For everything the language doesn’t account for with specialized syntax I can simply switch to Guile Scheme. No other notation software is as flexible and malleable as Lilypond. I let it generate both sheet music and a MIDI file — the sheet music is displayed in a PDF viewer in Emacs and the MIDI file sent to fluidsynth (because I trust my ears over my eyes). Read more

Proxmox VE 6.3 released

we have just released version 6.3 of our virtualization platform Proxmox VE. This release now integrates the stable version 1.0 of our new Proxmox Backup Server so that you can easily back up and restore your VMs and containers. Also, the stable Ceph Octopus is supported, and you can select your preferred Ceph version during the installation process in the GUI. We hope you like it! Read more

Videos/Audiocasts/Shows: PulseAudio, Ubuntu Podcast, and BSD Now

  • Does Pulse Audio Deserve The Hate It Gets? - YouTube

    In today's video we're going to talk about Pulse Audio specifically how Pulse Audio gets a lot of hate for being a terrible linux sound system and whether a lot of this hate is actually very justified.

  • Ubuntu Podcast S13E36 – Singing at the dinner table

    This week we have been playing DRAG. We discuss what we’ve been doing during lock down, bring you an extension of love, go over all your wonderful feedback and take a trip to ThinkPad corner. It’s Season 13 Episode 36 of the Ubuntu Podcast! Alan Pope, Mark Johnson and Martin Wimpress are connected and speaking to your brain.

  • BSD Now 378: Networknomicon

    Interview with Michael W. Lucas: SNMP and TLS book, cashflow for creators, book sale and more.