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Software: Fityk, Butterfly, pgFormatter, a2ps, and More

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Software

  • Fityk is A Multi-platform Open-source Data-analysis Package for Scientists

    Fityk [fi:tik] is an open-source program for data processing and nonlinear curve fitting, that works for Windows, Linux and macOS.

  • Butterfly: Note-taking with a Style

    Butterfly is a note app where your ideas come first. You can paint, add texts and export them easily on every device.

    It is written in Flutter and the Dart programming language, and it comes with dozens of features and colors options especially for creative people who like to take handwritten notes.

    [...]

    The project is released under the AGPL-3.0-only License.

  • Usermode FTP Server is an Open-source Multi-platform FTP Server

    Access your files directly with many file browsers' builtin FTP support: Windows File Explorer, Thunar, Gnome Files, Dolphin and many more!

  • Trilium Notes is An Open-source Personal Knowledge base App and Evernote Alternative

    Trilium Notes is a free open-source hierarchical note-taking application with focus on building large personal knowledge bases.

    It comes packed with dozens of useful future to aid all kind of users. As its primary goal to build a knowledge base, it can be used by creative writers, to write novels, librarians, developers and and editors.

  • PostgreSQL: pgFormatter v5.3 released

    Version 5.3 of pgFormatter, a free and reliable tool used to format SQL and PLPGSQL code, has been officially released and is publicly available for download. A demonstration site is available online at http://sqlformat.darold.net/

    pgFormatter is the most advanced SQL and PlPgsql code formatter and beautifier dedicated to PostgreSQL. It is provided as a CLI or a CGI program.

  • a2ps 4.14.91 released [alpha]
    This alpha release marks the return of GNU a2ps to the Translation Project.
    
    Some other minor issues have also been fixed.
    
    
    Here are the compressed sources and a GPG detached signature:
      https://alpha.gnu.org/gnu/a2ps/a2ps-4.14.91.tar.gz
      https://alpha.gnu.org/gnu/a2ps/a2ps-4.14.91.tar.gz.sig
    
    Use a mirror for higher download bandwidth:
      https://www.gnu.org/order/ftp.html
    
    Here are the SHA1 and SHA256 checksums:
    
    36c2514304132eb2eb8921252145ced28f209182  a2ps-4.14.91.tar.gz
    1LQ+pPTsYhMbt09CdSMrTaMP55VIi0MP7oaa+zDvRG0  a2ps-4.14.91.tar.gz
    
    The SHA256 checksum is base64 encoded, instead of the
    hexadecimal encoding that most checksum tools default to.
    
    Use a .sig file to verify that the corresponding file (without the
    .sig suffix) is intact.  First, be sure to download both the .sig file
    and the corresponding tarball.  Then, run a command like this:
    
      gpg --verify a2ps-4.14.91.tar.gz.sig
    
    The signature should match the fingerprint of the following key:
    
      pub   rsa2048 2013-12-11 [SC]
            2409 3F01 6FFE 8602 EF44  9BB8 4C8E F3DA 3FD3 7230
      uid   Reuben Thomas <rrt@sc3d.org>
      uid   keybase.io/rrt <rrt@keybase.io>
    
    If that command fails because you don't have the required public key,
    or that public key has expired, try the following commands to retrieve
    or refresh it, and then rerun the 'gpg --verify' command.
    
      gpg --locate-external-key rrt@sc3d.org
    
      gpg --recv-keys 4C8EF3DA3FD37230
    
      wget -q -O- 'https://savannah.gnu.org/project/release-gpgkeys.php?group=a2ps&download=1' | gpg --import -
    
    As a last resort to find the key, you can try the official GNU
    keyring:
    
      wget -q https://ftp.gnu.org/gnu/gnu-keyring.gpg
      gpg --keyring gnu-keyring.gpg --verify a2ps-4.14.91.tar.gz.sig
    
    
    This release was bootstrapped with the following tools:
      Autoconf 2.69
      Automake 1.16.1
      Gnulib v0.1-5347-gc0c72120f0
    
    NEWS
    
    * Noteworthy changes in release 4.14.91 (2022-08-08) [alpha]
     * Build:
       - Re-add a2ps to the Translation Project, and remove po files from git.
     * Bug fixes:
       - Remove reference to @COM_distill@ variable in a2ps_cfg.in.
     * Documentation:
       - Format --help output consistently to 80 columns.
       - Fix a couple of message typos.
    
    
  • BeeRef: A Floating Open-source Simple Reference Image Viewer for Artists

    BeeRef is published under GNU General Public License v3.0.

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