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Thursday, 9 October 2025

How to Learn Ubuntu Commands Like a Pro




How to Learn Ubuntu Commands Like a Pro
💻

Learning Ubuntu commands is one of the best ways to understand how Linux really works. Whether you’re a beginner or a curious developer, mastering the terminal gives you more power, speed, and control over your system.

In this guide, you’ll learn how to start using Ubuntu commands step-by-step, with tips, examples, and free resources.


🧭 1. Start with the Basics

The terminal is your control center in Ubuntu.
Open it by pressing Ctrl + Alt + T or searching “Terminal” in your app menu.

Here are some basic commands to get started:

Command Description
pwd Show your current directory
ls List files and folders
cd foldername Change directory
mkdir myfolder Create a new folder
rmdir myfolder Remove an empty folder
cp file1 file2 Copy files
mv file1 file2 Move or rename files
rm file Delete a file
cat file View file content
clear Clear your screen

🪄 Tip: Try typing these commands one by one — repetition builds confidence.


⚙️ 2. Manage Your Ubuntu System

Once you’re comfortable with navigation, move to system-level commands.

🧩 Software Management

Use APT (Advanced Package Tool) to install or update software:

sudo apt update
sudo apt upgrade
sudo apt install packagename
sudo apt remove packagename

🧠 System Monitoring

These commands help you check your system performance:

df -h     # Check disk usage  
free -h   # Show memory usage  
top       # View running processes  

📘 3. Use Built-In Help

Ubuntu has powerful built-in help tools that you can use anytime:

man command       # Opens manual (e.g. man ls)
command --help    # Shows short help for that command

🧩 Example:

man mkdir

This shows all details about how to create directories, available options, and examples.


🧠 4. Practice Every Day

The best way to learn Ubuntu commands is through daily use.
Try these small exercises:

  • Create, rename, and delete folders.

  • Install software using the terminal.

  • Monitor CPU and memory usage.

  • Use only the terminal for 15–30 minutes a day.

The more you use it, the more natural it feels. 💪


🌐 5. Explore Free Learning Resources

Here are some great resources to boost your learning:


⚙️ 6. Go Beyond the Basics

Once you’ve mastered the fundamentals, try exploring:

  • File permissions (chmod, chown)

  • User management (adduser, passwd)

  • Network commands (ping, curl, ifconfig)

  • Process management (ps, kill, systemctl)

  • Shell scripting (Bash) — to automate daily tasks


💡 Pro Tip: Create Your Own Cheat Sheet

Make a personal Linux Command Cheat Sheet — write every new command you learn.
You’ll build a strong reference list and memorize faster.


🚀 Final Thoughts

Learning Ubuntu commands isn’t just about memorizing syntax — it’s about understanding how Linux thinks.
With a bit of daily practice, you’ll be able to manage, troubleshoot, and even automate your system with ease.

“The GUI shows what’s possible.
The command line shows what’s powerful.” ⚡



History of Ubuntu, one of the most popular Linux distributions in the world

History of Ubuntu, one of the most popular Linux distributions in the world


Origins (2004)

  • Ubuntu was founded by Mark Shuttleworth, a South African entrepreneur and former Debian developer.

  • He created Canonical Ltd. to fund and maintain the project.

  • Ubuntu was based on Debian, a long-standing Linux distribution known for stability and open-source purity.

  • The first version, Ubuntu 4.10 “Warty Warthog”, was released on October 20, 2004.

The goal: create a user-friendly, regularly updated Linux OS that anyone could use — free of charge.


Core Philosophy

Ubuntu is built on four freedoms (inspired by open-source principles):

  1. Freedom to run the program for any purpose.

  2. Freedom to study and change the program.

  3. Freedom to redistribute copies.

  4. Freedom to share improvements.

Its slogan: “Linux for Human Beings.”


Major Milestones

YearVersionHighlights
20044.10 “Warty Warthog”First release; based on Debian; easy desktop install.
20066.06 “Dapper Drake”First LTS (Long Term Support) release; introduced Live CD installer.
20088.04 “Hardy Heron”Widespread adoption; strong desktop and server versions.
201010.04 “Lucid Lynx”Major UI polish; long-term stability.
201111.04 “Natty Narwhal”Introduced Unity desktop environment, replacing GNOME 2.
201414.04 “Trusty Tahr”LTS version; very popular for enterprises.
201717.10 “Artful Aardvark”Switched from Unity to GNOME 3.
201818.04 “Bionic Beaver”LTS; cloud and container support via Snap packages.
202020.04 “Focal Fossa”Stable, cloud-optimized release; improved ZFS and hardware support.
202222.04 “Jammy Jellyfish”LTS; newer GNOME, Wayland by default.
202424.04 “Noble Numbat”Latest LTS; enhanced security, AI tools, and performance improvements.

Ubuntu in the Cloud & Servers

  • Ubuntu quickly became a top OS for servers and cloud computing.

  • It's used by AWS, Google Cloud, Azure, and countless data centers.

  • Ubuntu Server powers much of the modern internet.

  • Canonical also developed Ubuntu Core, a minimal, containerized version for IoT devices.


Ubuntu Touch & Beyond

  • Canonical tried to bring Ubuntu to smartphones and tablets via Ubuntu Touch (2013).

  • The project aimed for “Convergence” — one OS for all devices.

  • It was discontinued by Canonical in 2017, but revived by the UBports community.


Modern Ubuntu

  • Today, Ubuntu is available in multiple flavors (official variants) like:

    • Ubuntu Desktop

    • Ubuntu Server

    • Kubuntu (KDE)

    • Xubuntu (XFCE)

    • Lubuntu (LXQt)

    • Ubuntu MATE, Ubuntu Studio, etc.

  • It remains one of the most popular Linux distributions worldwide for beginners, developers, and enterprises.


Impact

  • Ubuntu helped make Linux mainstream on desktops and cloud servers.

  • It inspired countless derivatives (like Linux Mint, Pop!_OS).

  • Its regular 6-month release cycle and 5-year LTS versions became a Linux standard.

Friday, 26 September 2025

most-talked-about topics in programming Trends & Topics

 

Here are some of the recent most-viewed / most-talked-about topics in programming (2025) — trends people are following closely, what’s rising, and what they imply if you want to stay up-to-date.


🔍 Top Programming Trends & Topics (2025)

  1. Python still very strong
    Python remains the dominant language across data science, ML/AI, web backend, automation. It leads many popularity indices. (TechRadar)

  2. Rust’s popularity & admiration
    Rust is frequently cited as the “most admired” language. It's gaining traction for system-level programming, safety, concurrency, and being a better alternative to C/C++ in many cases. (Analytics Insight)

  3. TypeScript rising
    Because front-end apps are getting more complex, teams want type safety. TypeScript is becoming standard for many large web applications. (Analytics Insight)

  4. Go (Golang) use increasing
    Go continues to be used more in cloud native applications, microservices, infrastructure tooling. Efficiency, simplicity, concurrency support are reasons. (Aegona)

  5. AI-powered coding / tools
    Tools like GitHub Copilot etc., and LLMs helping generate/assist with code are a hot topic. Discussion about how programming might evolve with more automation in writing/maintaining code. (Analytics Insight)

  6. Edge computing / WebAssembly / performance-first architectures
    Because more computing is being pushed to the edge or into constrained environments (IoT, mobile, browsers), languages/frameworks that can deliver performance (while safeguarding safety) are drawing attention. WebAssembly is one of the interesting technologies here. (Sky Tech Bot)

  7. Emerging languages & experimental ones
    Examples:

    • Mojo (from the Python family, targeting performance) getting interest. (Wikipedia)

    • Carbon (designed for interoperability with C++, as its potential successor). (Wikipedia)


⚙️ What These Trends Mean in Practice

  • Engineers are being asked to upskill: e.g., learn Rust, TypeScript, Go in addition to more established languages.

  • Code quality, safety, performance, and maintainability are getting more attention (not just speed of building).

  • Tools that automate parts of programming (syntax, boilerplate, tests) are becoming more embedded in developer workflows.

  • Choice of language is now more strategic: cost of bugs, memory safety, concurrency concerns, etc., factor heavily.

  • There's interest in how programming will evolve with AI: how much will LLMs help write code? Will novices be able to build more with less code manually?


If you want, I can pull up a chart or image of the current most-popular programming languages by usage or job demand — would that be helpful?

how to create a simple Spring Boot program with step by step

 

Let’s walk through how to create a simple Spring Boot program — step by step. We’ll build a small “Hello World” REST API using Spring Boot.


🧰 Prerequisites

Make sure you have:

  • Java 17+ installed (java -version)

  • Maven or Gradle

  • Spring Boot (via Spring Initializr)

  • An IDE (like IntelliJ IDEA, Eclipse, or VS Code)


🪄 Step 1: Create a New Project

Option 1 — Use Spring Initializr (recommended)

Go to 👉 https://start.spring.io

Select:

  • Project: Maven

  • Language: Java

  • Spring Boot Version: Latest stable (e.g. 3.3.x)

  • Group: com.example

  • Artifact: demo

  • Dependencies:

    • Spring Web

Click Generate, and it will download a .zip file.
Extract and open it in your IDE.


🧱 Step 2: Check Project Structure

Your project should look like:

demo/
 ├── src/
 │   ├── main/
 │   │   ├── java/com/example/demo/DemoApplication.java
 │   │   └── resources/application.properties
 │   └── test/
 ├── pom.xml

🧑‍💻 Step 3: Write a Simple REST Controller

Create a new file:
📄 src/main/java/com/example/demo/HelloController.java

package com.example.demo;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @GetMapping("/hello")
    public String sayHello() {
        return "Hello, Spring Boot!";
    }
}

This creates a REST endpoint at /hello.


🚀 Step 4: Run the Application

In your IDE, run DemoApplication.java, or in the terminal:

mvn spring-boot:run

You’ll see:

Tomcat started on port 8080

Now open your browser and go to:

👉 http://localhost:8080/hello

You should see:

Hello, Spring Boot!

🎉 You’ve just built your first Spring Boot app!


⚙️ Step 5: Optional — Customize Port

In src/main/resources/application.properties:

server.port=9090

Now your app runs on http://localhost:9090/hello.


🧪 Step 6: Build JAR (optional)

To package it:

mvn clean package

Run it:

java -jar target/demo-0.0.1-SNAPSHOT.jar

Would you like me to show you how to connect this app to a database (like MySQL) or create CRUD APIs next?

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