Useful Linux commands - zamaniamin/python GitHub Wiki

Ubuntu

check linux version:

lsb_release -a

Update System Packages Index:

sudo apt update && sudo apt upgrade -y

Python

Here's a step-by-step guide to creating a virtual environment using venv, the standard Python virtual environment module:

  1. Install python3-venv (if not already installed)
sudo apt update

sudo apt install python3-venv
  1. Create a Virtual Environment Choose or create a directory for your project, navigate to it in the terminal, and then create a virtual environment:
python3 -m venv .venv
  1. Activate the Virtual Environment Activate the virtual environment using the following command:
source .venv/bin/activate

PostgreSQL

Install PostgreSQL on Ubuntu:

sudo apt install postgresql postgresql-contrib -y

Start the PostgreSQL service manually using the following command:

sudo service postgresql start

To stop the service:

sudo service postgresql stop

To restart the service:

sudo service postgresql restart

To check if PostgreSQL is running in WSL, you can use the following commands (Verify Installation):

sudo service postgresql status

Access the PostgreSQL Command Line:

sudo -i -u postgres

or:

sudo -u postgres psql

You can exit the PostgreSQL command line by typing:

\q

If you want to perform administrative tasks, you can switch to the "postgres" user and then enter the PostgreSQL command line:

sudo -u postgres psql