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Programming: Bash/Command Line, Python and More

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HowTos
  • Add leading zeroes that aren't really leading

    A leading zero can be a useful addition to a number string, and there are several ways to add one or more leading zeroes on the command line. The addition is a little less straightforward if the leading zero sits inside a non-numeric string. This post deals with a couple of such cases.

  • Always Launch Terminal as root User (sudo) in Ubuntu

    While working with the Ubuntu command line, the Terminal, we come across situations that require us to log in as root again and again. Ubuntu does that for protecting our system in order to avoid any user or script that opens the Terminal for any malicious activities that put your privacy and system at risk. Root allows far more access than a standard user needs on the command line. With root in action, features that make Ubuntu more secure are no longer working for you. Just consider running a web browser as root!

  • Fastest Python function to slugify a string

    The code is 7-8 years old and relates to a migration when MDN was created as a Python fork from an existing PHP solution.

    I couldn't help but to react to the fact that it's a list and it's looped over every single time. Twice, in a sense. Python has built-in tools for this kinda stuff. Let's see if I can make it faster.

  • Should you use "dot notation" or "bracket notation" with pandas?

    If you prefer bracket notation, then you can use it all of the time! However, you still have to be familiar with dot notation in order to read other people's code.

    If you prefer dot notation, then you can use it most of the time, as long as you are diligent about renaming columns when they contains spaces or collide with DataFrame methods. However, you still have to use bracket notation when creating new columns.

  • Solving Sequence Problems with LSTM in Python's Keras Library

    Time series forecasting refers to the type of problems where we have to predict an outcome based on time dependent inputs. A typical example of time series data is stock market data where stock prices change with time. Similarly, the hourly temperature of a particular place also changes and can also be considered as time series data. Time series data is basically a sequence of data, hence time series problems are often referred to as sequence problems.

  • How the Worlds of Linux and Windows Programming Converged

    Once upon a time, the world of developers was split into two halves: One half was composed of Windows developers, who created most of the productivity apps that powered PCs (and, occasionally, servers). The other half comprised Linux and Unix developers, whose work focused on server-side development. Today, however, as the worlds of Windows and Linux move ever closer together, the distinction between Windows and Linux developers is disappearing. Gone are the days when you had to specialize in one ecosystem or the other.

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.