Ubuntu installation log

- sudo apt update
- sudo apt install vim
- sudo apt install build-essential
  This command will install G++, GCC, make, and other core development libraries.
  - gcc/g++ 15.2.0
    g++-15 -std=c++20 hello.cpp -o hello
  - perl 5, version 40, subversion 1 (v5.40.1)
- sudo apt install default-jdk
  This installs Java.
  - javac --version : javac 21.0.10
  - java --version  : openjdk version "21.0.10" 2026-01-20
- sudo apt install php
  This installs PHP.
  - PHP 8.4.11 (cli) (built: Jan  7 2026 08:44:00) (NTS)

- sudo apt install apache2
  apache2 is already the newest version (2.4.64-1ubuntu3.2)
  - sudo systemctl status apache2
  - server is running
  - conf: /etc/apache2/
  - /var/www/html/ 

- Python is pre-installed on all modern Ubuntu:
  - Python 3.13.7
- sudo apt install python3-pip
  This installs pip (Python package manager)
  - pip 25.1.1 from /usr/lib/python3/dist-packages/pip (python 3.13)

- sudo apt install python3-venv
  sudo apt install python3.14-venv
  Install venv (virtual environment module): This is crucial for creating isolated environments 
  for your projects to manage dependencies without affecting the system Python.
  - You also need to install for each python version

- sudo apt install software-properties-common
  This installs the add-apt-repository command in Ubuntu.
  - type add-apt-repository
    add-apt-repository is /usr/bin/add-apt-repository
  - You can now use the command to add a new repository, for example, a Personal Package Archive (PPA):
    sudo add-apt-repository ppa:some/ppa-name
- sudo add-apt-repository ppa:deadsnakes/ppa
  sudo apt update
  - This adds the deadsnakes PPA.

- sudo apt install python3.14
  - Installs Python 3.14
  - python3.14 --version
    3.14.0
  - python3 --version
    3.13.7

- make Python an alias of python3.14:
  - vi ~/.bash_aliases
  - add: alias python=python3.14
  - source ~/.bash_aliases

- mkdir wschat
  cd wschat
  python -m venv .myenv
  source .myenv/bin/activate
  - pip install autobahn[twisted]
  deactivate