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Programming: C, Perl and Python

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Development

  • How to use mmap function in C language?

    The mmap() function is used for mapping between a process address space and either files or devices. When a file is mapped to a process address space, the file can be accessed like an array in the program. This is one of the most efficient ways to access data in the file and provides a seamless coding interface that is natural for a data structure that can be assessed without he abstraction of reading and writing from files. In this article, we are going to discuss how to use the mmap() function in Linux. So, let’s get started.

  • The [Perl] Weekly Challenge #070

    Before I talk about my contribution this week, I would like to talk about my encounter with Swift programming language recently. For the first time, I felt confident that I can share my Swift solution to the Character Swapping task of the Perl Weekly Challenge - 070. Why Task #1 only? Well, you guessed it correctly because it is meant for the beginners. With the submission of my first contribution in Guest Language, I now find myself in the Guest List as you must have seen in RECAPS every week. In the next edition of RECAPS, you would see my name in the list with other prominent guests. Ever since I started the Guest List, I always wanted to be a part of it but never had the courage to try new language other than Perl and Raku. While I am talking about Guest List, I would like to mention the first guest who started the trend was Orestis Zekai with the Python contributions in the Week #018.

  • Perl Weekly Challenge 70: Character Swapping and Gray Code Sequence

    These are some answers to the Week 70 of the Perl Weekly Challenge organized by Mohammad S. Anwar.

  • Next stable DBD::SQLite will be released at the end of August

    DBD::SQLite 1.65_03 (with SQLite 3.32.3) is a release candidate for the next stable DBD::SQLite. There are no big changes, maybe except for the ncrease of the default upper bound on the number of parameters from 999 to 32766 (since SQLite 3.32).

  • Simple infinite scroll in Django

    If you’ve used Twitter, Instagram, or Facebook, you would have used something called “infinite scroll”, sometimes also called “infinite loading” or “endless pagination”.

    Basically, it means that once you scroll down near the bottom of a list of items, the page fetches new items automatically and adds them to the page. That makes it a smoother experience compared to traditional pagination in some cases.

    You may have wondered how to do that in Django. I’m going to show you a very simple way to do this using no JavaScript libraries.

    Note: The solution here is inefficient for lists with a large number of items (e.g. thousands of items). Efficient infinite scroll uses windowing, and removes items not in view from the DOM. However, if you are only dealing with a few hundred items, this is a very simple way to achieve this, with no dependencies.

  • PSF GSoC students blogs: GSoC: Week 9: ConfigParser()
  • PSF GSoC students blogs: Weekly Check-in #9
  • PSF GSoC students blogs: Weekly Check-in #9
  • PSF GSoC students blogs: [Week 8] Check-in
  • AHundred Days of Code, Day 018 - Python Comprehensions, Done!

    Continuing my comprehensions journey.

  • Python 3.6.9 : My colab tutorials - parts 006 - 007.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.