How To install Python 3.13.11 from Source & Setting Up a Virtual Environment On Ubuntu 24.04.3 LTS

 Python is one of the most popular programming languages. It is used to build all kinds of applications, from simple scripts to complex machine-learning systems. With its straightforward syntax, Python is a good choice for both beginners and experienced developers.
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Testing Environment: Ubuntu 24.04.3 LTS                   Hostname -                       ip Address - 
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apt update ; apt install build-essential net-tools curl git software-properties-common 

sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev libsqlite3-dev wget libbz2-dev liblzma-dev
wget https://www.python.org/ftp/python/3.13.11/Python-3.13.11.tgz
tar -xf Python-3.13.11.tgz
cd Python-3.13.11
./configure --enable-optimizations
make -j $(nproc)
sudo make altinstall
python3.13 --version


Setting Up a Virtual Environment  -
python3.13 -m venv myproject
source myproject/bin/activate
deactivate
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2 Ways to Install Git And Setting Up Git on Ubuntu 24.04

 " How to 2 Ways to Install Git / check version in cmd / Setting Up Git / uninstall Git on Ubuntu 24.04  "
. Git is a tool that helps you keep track of changes in your files and projects, making it easier to manage your work. It’s secure and widely used by many people to organize their code and projects. 
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Testing Environment: Ubuntu 24.04.1 LTS                   Hostname -                       ip Address - 
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apt update ; apt install build-essential net-tools curl software-properties-common 


Method - 1
sudo apt update ; sudo apt install git -y
Setting Up Git - 
git config --global user.name "Your Name"
git config --global user.email "youremail@domain.com"
git config --list
git config --global init.defaultBranch main
git config --global core.editor "nano"
git config --global --list

Uninstall Git  - 
sudo apt remove git -y ; sudo apt autoremove -y

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Method - 2  Installing Git from Source - 
sudo apt install libz-dev libssl-dev libcurl4-gnutls-dev libexpat1-dev gettext cmake gcc -y
mkdir tmp ; cd tmp

curl -o git.tar.gz https://mirrors.edge.kernel.org/pub/software/scm/git/git-2.51.0.tar.gz
tar -zxf git.tar.gz ; cd git-*

make prefix=/usr/local all
sudo make prefix=/usr/local install
exec bash
git --version

Uninstalling Git Installed from Source - 
cd /path/to/git/source
sudo make uninstall
git --version

Setting Up Git - 
git config --global user.name "Your Name"
git config --global user.email "youremail@domain.com"
git config --list
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How To Enable Remote Desktop Protocol Using xrdp on On Ubuntu 24.04 LTS

XRDP is a tool used for connecting to an Ubuntu or other Linux system via Remote Desktop Protocol (RDP). It provides remote access to your Linux desktop environment from a Windows machine or any other RDP-compatible client. Additionally, it also offers a graphical user interface for managing the system remotely. 
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Testing Environment: Ubuntu 24.04.1 LTS                   Hostname -                       ip Address - 
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apt update ; apt install build-essential net-tools curl git software-properties-common 
sudo apt install xrdp -y
sudo adduser xrdp ssl-cert
sudo systemctl restart xrdp ; sudo systemctl status xrdp 
sudo ufw allow 3389
sudo ufw allow from [IP_Address] to any port 3389
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How to Run a Python Script on Ubuntu 24.04.2 LTS

Running a Python script on Ubuntu is a fundamental skill for developers, system administrators, and data scientists. Whether you’re automating tasks, running a web server, or training a machine learning model, understanding the proper execution methods is essential. This article provides a comprehensive overview of how to run Python scripts on Ubuntu, covering everything from basic commands to professional best practices.

Python is a programming language that is interpreted, object-oriented, and considered to be high-level.|
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Testing Environment: Ubuntu 24.04.2 LTS                   Hostname -                       ip Address - 
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lsb_release -a
apt update ; apt install build-essential net-tools curl git software-properties-common 
python3 --version
sudo apt install python3 python3-venv python3-pip
cd ~/path-to-your-script-directory

nano demo_ai.py
from sklearn.tree import DecisionTreeClassifier
import numpy as np
import random

# Generate sample data
x = np.array([[i] for i in range(1, 21)])  # Numbers 1 to 20
y = np.array([i % 2 for i in range(1, 21)])  # 0 for even, 1 for odd

# Create and train the model
model = DecisionTreeClassifier()
model.fit(x, y)

# Function to predict if a number is odd or even
def predict_odd_even(number):
    prediction = model.predict([[number]])
    return "Odd" if prediction[0] == 1 else "Even"

if __name__ == "__main__":
    num = random.randint(0, 20)
    result = predict_odd_even(num)
    print(f"The number {num} is an {result} number.")

python3 -m venv python-env
source python-env/bin/activate
pip install scikit-learn numpy

Run Python Script -   python3 demo_ai.py

Script Executable [OPTIONAL] - 
nano demo_ai.py
#!/usr/bin/env python3
chmod +x demo_ai.py
./demo_ai.py
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How to Install n8n on Ubuntu 24.04 LTS

 n8n is a versatile workflow automation tool that enables you to automate tasks across different services.
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Testing Environment: Ubuntu 24.04.1 LTS                   Hostname -                       ip Address - 
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apt update ; apt install build-essential net-tools curl git software-properties-common 
adduser master
usermod -aG sudo master
su - master
curl -sL https://deb.nodesource.com/setup_lts.x | sudo -E bash -
sudo apt update ; sudo apt install nodejs -y
node -v; npm -v
sudo npm install -g n8n
sudo n8n
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How To Install Fast API with MongoDB on Ubuntu 24.04 LTS

 In this tutorial, you'll learn how to install FastAPI with MongoDB on Ubuntu 24.04 LTS . 
FastAPI is a web framework based on Python for creating API services. It's a modern, fast, high-performance framework supporting asynchronous operations.
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Testing Environment: Ubuntu 24.04.1 LTS                   Hostname -                       ip Address - 
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apt update ; apt install build-essential net-tools curl git software-properties-common gnupg python3 python3-pip python3-venv -y

curl -fsSL https://www.mongodb.org/static/pgp/server-8.0.asc | \
sudo gpg -o /usr/share/keyrings/mongodb-server-8.0.gpg \
--dearmor

echo "deb [ arch=amd64,arm64 signed-by=/usr/share/keyrings/mongodb-server-8.0.gpg ] https://repo.mongodb.org/apt/ubuntu noble/mongodb-org/8.0 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb-org-8.0.list

sudo apt update && sudo apt install mongodb-org -y

sudo systemctl enable --now mongod ; sudo systemctl status mongod
mongosh


su - username
mkdir -p ~/app; cd ~/app
python3 -m venv .venv
source .venv/bin/activate
deactivate
pip3 install fastapi uvicorn
mkdir -p server/{models,routes}
touch main.py server/{app.py,database.py} server/models/itemModels.py server/routes/item.py

nano app.py  | nano server/app.py
from fastapi import FastAPI

app = FastAPI()

@app.get("/")
async def root():
 return {"message": "Hello FastAPI!"}

nano main.py
import uvicorn

if __name__ == "__main__":
 uvicorn.run("server.app:app", host="0.0.0.0", port=8080, reload=True)

python3 main.py
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How To Install latest OpenSSL version from Source On Oracle Linux Server 9.1

 OpenSSL is a widely used crypto library that implements SSL and TLS protocols for secure communication over computer networks. Many programs like Apache Web server, PHP, Postfix, and many others use OpenSSL. OpenSSL provides support for various cryptographic algorithms such as ciphers (AES, Blowfish, DES, IDEA etc.), cryptographic hash functions (MD5, MD4, SHA-1, SHA-2, etc.), and public key cryptography (RSA, DSA, Diffie-Hellman key exchange).
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Server - Os:  Oracle Linux Server 9.1   64Bit      | IP -192.168.1.50        |Hostname - server.testbox.com
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cat /etc/system-release ; hostname ; hostname -I ; dnf groupinstall "Development Tools" -y
yum install perl-core zlib-devel -y

openssl version -a
Openssl Latest - https://www.openssl.org/source/-
cd /usr/local/src/ ; wget https://www.openssl.org/source/openssl-3.0.7.tar.gz
tar -xf openssl-3.0.7.tar.gz ; cd openssl-3.0.7

cd /usr/local/src/openssl-3.0.7
./config --prefix=/usr/local/ssl --openssldir=/usr/local/ssl shared zlib
make ; make test ; make install
cd /etc/ld.so.conf.d/ ; nano openssl-3.0.7.conf
/usr/local/ssl/lib64

sudo ldconfig -v
mv /bin/openssl /bin/openssl.bak

nano  /etc/profile.d/openssl.sh
#Set OPENSSL_PATH
OPENSSL_PATH="/usr/local/ssl/bin"
export OPENSSL_PATH
PATH=$PATH:$OPENSSL_PATH
export PATH

chmod +x /etc/profile.d/openssl.sh ; source /etc/profile.d/openssl.sh
echo $PATH ; which openssl ; openssl version -a

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