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today's leftovers

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  • How Open Source is Changing the World

    Open source software has helped businesses across all industries develop and deploy innovative new services. It has broken down the siloes that inhibit innovation and allowed companies to share in their success.

    The open source way is also about more than just software – it’s a change in mindset. Through collaboration, meritocracy, transparency, and the support of a diverse community, open source developers are building a better world with better software.

  • Why reproducible machines didn't used to be a priority (I think)

    When I wrote about why we care about being able to (efficiently) reproduce machines, I mentioned that this didn't used to be a priority in the sufficiently old days. By the sufficiently old days I mean broadly the 1990s, at least in more moderate sized environments like what used to be common at the university; I think by even the early 00s, people here were starting to care. Today it's time for my rambles about some reasons why I think we didn't used to care as much.

    First, back then it was often harder to keep machines running in the first place. Software was more primitive and hardware was sufficiently limited that we were pushing it much closer to the edge than we did later. If much of your time is spent fighting fires, everything else takes second place. This feeds into the other two reasons.

    (One area of software that was more primitive was the software for automatically managing machines.)

  • Big Savings on Librem 14 and Mini Are Here!

    Based off of the success of the recent promotion, we are extending the $100 off on Librem 14, until stock runs out. We received an amazing response to the Summer Sale, and we’d like to thank our customers, community and supporters. In addition, we have decided to offer $60 off on Librem Mini, till the current inventory runs out. We can ship these in-stock products, within 10 business days for standard orders.

    Purism has designed each component in line with our belief in respecting your rights to privacy, security, and freedom.  Librem 14 is the 14-inch laptop designed for those who value secure and respectful technology. Librem Mini has been our most accessible Librem product, and is highly requested by the community. Both Librem 14 and Mini can be fortified with PureOS, PureBoot (coreboot +Heads) and Librem Key support. If detecting tampering of laptops or other hardware on the way is of concern to you, do consider adding our custom Anti-Interdiction services.

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