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today's leftovers

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  • Migrating from VMware to an open-source private cloud in financial services | Ubuntu

    This is part one of a two part blog series on open source based private cloud for financial services. This blog describes the need for a cost-effective private cloud to execute a successful hybrid cloud strategy. It also shares a comparison between proprietary and open source based private cloud platforms. In the second part, we will elaborate on the key considerations that financial institutions need to think about when planning to migrate to open source based private cloud platforms, along with the operational benefits of Charmed OpenStack for financial institutions.

    To drive business agility, financial institutions are on a journey to fundamentally reshape their IT infrastructure. As their IT estates grow and become more complex, financial institutions are increasingly facing the challenge to optimise their infrastructure spend. Many financial institutions are adopting scalable and agile cloud infrastructure guided by a hybrid multi-cloud strategy.

  • Ubuntu 22.04 vs 20.04 – What’s new?

    Ready to see what’s new in Ubuntu 22.04? In this article, you will learn about all of the main differences between Ubuntu 22.04 Jammy Jellyfish and its predecessor, Ubuntu 20.04 Focal Fossa. We will also list some of the more subtle changes which may not be as noticeable at first, but serve to modify the new operating system under the hood.

  • What drives digital transformation in an enterprise? | SUSE Communities

    Digital transformation within organizations has been a strategic move to uplift businesses in many enterprises. In this era of constant change, transformation can come in all shapes and sizes. It could be a cultural/structural change that could have a larger impact or could be infrastructure expansion transforming business models.

  • How to Record Audio in Ubuntu and other Linux Distributions

    How to record audio in Ubuntu and other Linux distributions?

    If you want to record a voice over through the microphone of your computer, you can use GNOME Sound recorder or Audacity.

    Using GNOME Sound Recorder is easy but it lacks features. Audacity could be overwhelming initially but it has plenty of features for professional level recording. However, I am not going into that detail in this tutorial.

    GNOME Sound Recorder works with the microphone. There is another tool called Audio recorder and you can use it to record streaming music (from Sptify, YouTube, internet radio, Skype and most other sources) apart from microphone input.

  • How I wish I could organize my thoughts

    I keep a pen & notebook on my desk, which I make liberal use of to jot down my thoughts. It works pretty well: ad-hoc todo lists, notes on problems I’m working on, tables, flowcharts, etc. It has some limitations, though. Sharing anything out of my notebook online is an awful pain in the ass. I can’t draw a straight line to save my life, so tables and flowcharts are a challenge. No edits, either, so lots of crossed-out words and redrawn or rewritten pages. And of course, my handwriting sucks and I can type much more efficiently than I can write. I wish this was a digital medium, but there are not any applications available which can support the note-taking paradigm that I wish I could have. What would that look like?

    [...]

    Other objects would include flowcharts, tables, images, hand-written text and drawings, and so on. These objects can be placed free form on the grid, or embedded in a page, or moved between each mode.

    The user input paradigm should embrace as many modes of input as the user wants to provide. Mouse and keyboard: middle click to pan, scroll to zoom in or out, left click and drag to move objects around, shift+click to select objects, etc. A multi-point trackpad should support pinch to zoom, two finger pan, etc. Touch support is fairly obvious. Drawing tablet support is also important: the user should be able to use one to draw and write free-form. I’d love to be able to make flowcharts by drawing boxes and arrows and having the software recognize them and align them to the grid as first-class vector objects. Some drawing tablets support trackpad and touch-screen-like features as well — so all of those interaction options should just werk.

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