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Programming Leftovers

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  • Excellent Free Tutorials to Learn Tcl - LinuxLinks

    Tcl (Tool Command Language) is a dynamic programming/scripting language based on concepts of Lisp, C, and Unix shells. Here's our recommended free tutorials to learn Tcl.

  • ROC and Precision-Recall curves - How do they compare?

    Both curves offer two useful information: how to choose the positive class prediction threshold and what is the overall performance of the classification model. The former is determined by selecting the threshold which yield the best tradeoff, in adequation with the prediction task and operational needs. The latter is done by measuring the area under the curves which informs about how good the model is, because by measuring the area under the curves, one computes the overall probability that a sample from the negative class has a lower probability than a sample from the positive class.

    With scikit-learn, the values can be computed either by using the roc_auc attribute of the object returned by plot_roc_curve() or by calling roc_auc_score() directly for ROC curves and by using the average_precision attribute of the object returned by plot_precision_recall_curve() or by calling average_precision_score() directly for PR curves.

  • Write GIMP scripts to make image processing faster | Opensource.com

    Some time ago, I wanted to give a blackboard-style look to a typeset equation. I started playing around with the GNU Image Manipulation Program (GIMP) and was satisfied with the result. The problem was that I had to perform several actions on the image, I wanted to use this style again, and I did not want to repeat the steps for all the images. Besides, I was sure that I would forget them in no time.

  • Bash wait Command | Linuxize

    wait is a command that waits for the given jobs to complete and returns the exit status of the waited for command.

    Since the wait command affects the current shell execution environment, it is implemented as a built-in command in most shells.

    In this article, we’ll explore the Bash built-in wait command.

  • Santiago Zarate: Cron do not send me empty emails
  • Rust & the case of the disappearing stack frames | Inside Rust Blog

    Now that the FFI-unwind Project Group has merged an RFC specifying the "C unwind" ABI and removing some instances of undefined behavior in the "C" ABI, we are ready to establish new goals for the group.

    Our most important task, of course, is to implement the newly-specified behavior. This work has been undertaken by Katelyn Martin and can be followed here.

More in Tux Machines

The March 2021 Issue of the PCLinuxOS Magazine

The PCLinuxOS Magazine staff is pleased to announce the release of the March 2021 issue. With the exception of a brief period in 2009, The PCLinuxOS Magazine has been published on a monthly basis since September, 2006. The PCLinuxOS Magazine is a product of the PCLinuxOS community, published by volunteers from the community. The magazine is lead by Paul Arnote, Chief Editor, and Assistant Editor Meemaw. The PCLinuxOS Magazine is released under the Creative Commons Attribution- NonCommercial-Share-Alike 3.0 Unported license, and some rights are reserved. All articles may be freely reproduced via any and all means following first publication by The PCLinuxOS Magazine, provided that attribution to both The PCLinuxOS Magazine and the original author are maintained, and a link is provided to the originally published article. In the March 2021 issue: * Short Topix: 10 Year Old Sudo Security Bug Patched * Repo Review: Minitube * GIMP Tutorial: Top GIMP Filters, Part 2 * H.264 vs H.265: The Evolution Of Video Codecs * Two PCLinuxOS Family Members Finally Meet * Tip Top Tips: How I Converted My H.264 Video To HEVC * PCLinuxOS Recipe Corner: Tortilla Casserole * And much more inside! This month’s cover was designed by parnote. Download the PDF (9.8 MB) https://pclosmag.com/download.php?f=2021-03.pdf Download the EPUB Version (7.1 MB) https://pclosmag.com/download.php?f=202103epub.epub Download the MOBI Version (7.2 MB) https://pclosmag.com/download.php?f=202103mobi.mobi Visit the HTML Version https://pclosmag.com/html/enter.html

Android Leftovers

SparkyLinux Finally Gets a KDE Plasma Edition, Xfce Flavor Updated to Xfce 4.16

Based on the Debian Testing repositories as of March 5th, 2021, where the development of the upcoming Debian GNU/Linux 11 “Bullseye” operating system series takes place, the SparkyLinux 2021.03 release ships with Linux kernel 5.10 LTS, the Calamares 3.2.37 installer, and various updated components (see below). But what caught my attention is the fact that SparkyLinux now features a KDE Plasma edition! Until now, SparkyLinux shipped with the Xfce, LXQt, MATE, Openbox (MinimalGUI), and MinimalCLI (text-mode) editions. Read more

How to Mount Windows NTFS Partition in Linux

This is quite common for Dual Boot users who use Windows and Linux simultaneously for their work. You can easily mount Windows partitions through File Manager. When you try to mount the NTFS partition from a terminal, you will encounter an error “The disk contains an unclean file system (0, 0). Read more