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GNU Screen is a versatile tool that enhances productivity for users who spend a lot of time working in the terminal. In this guide, we’ll explore what GNU Screen is, its common use cases, reasons why you should use it, how to detach and reattach sessions, and some common options you can specify to tailor your experience. What is GNU Screen? GNU Screen is a terminal multiplexer that allows users to create multiple virtual terminals within a single physical terminal or SSH session....

Note: this is a blog version of the Flask Workshop I’m giving for WinHacks 2024. To view the slides and supporting materials as presented during WinHacks, check out the official GitHub repository here. Intro to Flask Presented by Jeremie Bornais Sample code available at github.com/jere-mie/flask-workshop/ Agenda About Flask Overview of the framework, what it is, why you should use it Installation Simple step by step installation instructions Your First App The structure of a Flask app, and getting it up and running Routes and Templates Adding new routes to the app, rendering templates, inheriting from templates Next Steps SQLAlchemy, User Authentication, and other ways to extend your app Interactive Demo We’ll be making our own Flask app from scratch!...

There are multiple ways to set up multiple GitHub accounts on one PC. For me, however, I prefer a solution that is more portable and requires less configuration. Thus, the solution I show here uses separate SSH keys for the two accounts, and the way you choose which account to use is by modifying the remote address of the GitHub repository. Only one small configuration file is required. Prerequesites Before you can begin, you’ll need to ensure you have Git and OpenSSH installed (Git typically comes with OpenSSH)....

This article purposely doesn’t go into specifics or provide a step-by-step tutorial. I’ll be writing a separate article on this later. Roughly 6 years ago I was in the market for a small and simple laptop to use when traveling and for school. At the time I had a gaming laptop (a purchase I still regret) which worked well for any gaming or heavy computing tasks I needed to perform. However, it was heavy, bulky, and would only last an hour or so on battery....

Are you tired of relying on third-party services like ngrok to expose your local development environment to the internet? Good news! You can achieve similar functionality by setting up a reverse SSH tunnel. In this guide, we’ll walk through the process of creating your own self-hosted tunneling solution. Prerequisites Local development environment with a service running on a specific port (e.g., http://localhost:8000). SSH access to a remote server with a publicly accessible IP address....

One of the most annoying aspects of working on multiple projects as a developer is dealing with projects that use different versions of the same programming language. If you’re a NodeJS developer, you’ve probably used NVM to cope with this. In fact, most programming languages have their own solution to this problem. However, when you’re working across multiple projects that span multiple programming languagues, using a different version management tool for each language can be cumbersome....

One of the most difficult steps of web development for beginners is the final step - actually getting your website online. There are hundreds of platforms out there that allow you to put your website online, and it can be difficult for a beginner to choose the right one for them. As you continue in your web development journey, you’ll most likely find a solution that fits and scales to your specific needs....

Setting up a development environment on Windows for coding in C can seem daunting for a new CS student. However, with the right tools and a step-by-step guide, the process can be straightforward. In this tutorial, we will walk through the process of setting up a development environment on Windows for coding in C. Step 1: Install WSL WSL (Windows Subsystem for Linux) is a compatibility layer that allows running Linux binaries natively on Windows....

In today’s digital age, computer science has become an increasingly essential field with numerous opportunities for career growth and innovation. High school students who are passionate about technology and interested in pursuing a degree in computer science can benefit greatly from proper preparation and guidance. In this blog post, I’ll provide advice and insights for high school students interested in pursuing a degree in computer science. By following these guidelines, you can set yourself up for success and achieve your goals in this exciting and dynamic field....

If you’re familiar with programming in C++, you’ve likely heard of classes, structs, and objects. These concepts are at the core of object-oriented programming and are essential for creating efficient, reusable, and modular code. In this article, we’ll take a closer look at what classes, structs, and objects are, how they work, and provide examples to illustrate their use in C++. Classes and Structs A class is a user-defined data type that encapsulates data and functions together into a single entity....

The following is a copy of the official definition of the Tiny programming language used in COMP-2140 at the University of Windsor, as first defined by Dr. Lu here. The Lexicon of the Tiny Language Keywords WRITE READ IF ELSE RETURN BEGIN END MAIN STRING INT REAL Single-character separators ; , ( ) Single-character operators + - * / Multi-character operators := == != Identifiers An identifier consists of a letter followed by any number of letters or digits The following are examples of identifiers: x, x2, xx2, x2x, End, END2 Note that End is an identifier while END is a keyword The following are not identifiers: F, WRITE, READ, ....

Transposing a 2-dimensional list in Python is especially useful when reading data that’s formatted similar to this: X Y Z 1 2 9 2 5 6 3 6 5 ... Usually, you’ll parse the input line by line and end up with an array that looks something like this: >>> print(data) [[1, 2, 9], [2, 5, 6], [3, 6, 5], ...] This usually isn’t useful though, as we normally want the x, y, and z values grouped together....

Dealing with CRLF can be extremely annoying on Linux, as it can cause errors when attempting to execute scripts or compile files. It is especially problematic when working with text files that were created on Windows, as they are formatted differently than Linux. Fortunately, there are easy ways to fix this issue. Traditionally, this has been done by using the dos2unix command, which can quickly and easily convert Windows-formatted text files to Linux-formatted ones, allowing you to avoid the headache of dealing with CRLF....

Introduction XV6 is a re-implementation of the Unix operating system that was developed as a teaching tool for MIT’s operating systems course. It is based on the original Unix operating system, which was developed in the 1970s at Bell Labs. XV6 is written in C and runs on x86-based computers. In the upcoming semester, I will be taking the Operating Systems course COMP-3300 at the University of Windsor, where we’ll be working with XV6....

Contained here are the main equivalences and inference rules for the COMP-2310 class at UWindsor. Equivalences E1. \( \alpha \land \sim \alpha \equiv false \) E2. \( \alpha \lor \sim \alpha \equiv true \) E3. \( \alpha \land \alpha \equiv \alpha \) E4. \( \alpha \lor \alpha \equiv \alpha \) E5. \( \alpha \land true \equiv \alpha \) E6. \( \alpha \lor false \equiv \alpha \) E7. \( \alpha \land false \equiv false \)...