Blog Posts | Codearmo

New Linux Server? Do These 10 Things First (Checklist ✅)

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✅ Checklist of important steps for Linux servers. Securing and making Linux virtual machines easier to work with guide.

Published on April 09, 2025

🚨 Securing Linux Servers: Fail2ban Tool Install & Setup Guide

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🚨 Keeping your Linux server safe from brute-force attacks is a must — especially when it's sitting out there on the public internet . One of the easiest and most effective ways to harden your SSH access is by using Fail2Ban. In this guide we show how to set up it up for a Ubuntu Virtual Machine

Published on April 09, 2025

How to Generate an SSH Key 🔑

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Master SSH key setup 🔑 in minutes! Generate your public & private key pair, configure SSH access to your serve. A fast guide for developers who need seamless, secure SSH access. 🚀

Published on April 02, 2025

Web Scraping with Python: A Practical Introduction Using BeautifulSoup 🍜 (Step-by-Step Guide for Beginners)

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Learn how to build a 🐍 Python web scraper using Beautiful Soup to extract temperature data from a website and save it as a CSV file. A beginner-friendly guide to web scraping with practical examples.

Published on March 27, 2025

📈 Best Platforms to Trade Crypto Options in 2025: Where to Buy & Hedge Bitcoin Risk

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What are crypto options📈 ? They're advanced trading contracts that let you buy or sell crypto at a set price in the future — with limited risk and unlimited strategies. Learn how to trade Bitcoin options on platforms like Bybit, Deribit, and OKX using real tactics, pro tools 🛠️, and demo accounts 🎮 to sharpen your edge before going live 🚀.

Published on March 24, 2025

File Transfers with WinSCP vs Rsync

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A short post on how to optimally transfer large files or folders with many files from a Linux server to your local machine (or vice versa). Here we explore using WinSCP and rsync to ensure that we can download the files in a reasonable amount of time. We also look at compression techniques using gzip, and show real examples of how to achieve this efficiently.

Published on March 24, 2025

Creating SSH Alias to Easily Connect to Server

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It can get very tiresome having to remember the IP address and which ssh key is associated with the user log in, especially once we have a few servers to manage, in this article we will show how to easily set up a system in which we can simply type a single word along with 'ssh' to get in to our servers.

Published on March 23, 2025

3 Proven Ways to Run a Python Script in the Cloud

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Learn how to run Python scripts in the cloud using a free Ubuntu virtual machine on Google Cloud. Perfect for developers, data scientists, and students using cloud computing, virtual servers, and remote Python automation with Google Cloud credits.

Published on February 27, 2025

An Introduction to Cloud Computing , using Google's free $300 credits

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Step-by-step guide to launching a free Ubuntu server on Google Cloud using your $300 credits. Ideal for beginners in cloud computing, virtual machines, and remote Python scripting—explained simply, no experience needed.

Published on February 27, 2025

Installing Docker & WSL on Windows

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Learn how to install Docker Desktop on Windows 11 in this complete step-by-step guide. Includes WSL setup, Ubuntu integration, and running a simple Flask app. Perfect for beginners and developers troubleshooting Docker on Windows

Published on June 28, 2024

Set up A Linux Server and Clone Private Git Repo

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In this post we will show how to set up a new Linux server in the cloud , create a sudo user, set up an ssh key pair and use this to authenticate with Github to clone a private repo.

Published on January 20, 2024

Using Numba in Dash Callbacks without Errors

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Using Numba's just-in-time compilation within Plotly Dash callbacks generally causes a strange to diagnose bug resulting in "Callback failed: the server did not respond" errors. In this article we show how this happens and how to fix it.

Published on December 30, 2023