postgres ubuntu - Shell-Bash

If you're a programmer and looking for an efficient and reliable database management system, you may consider using PostgreSQL. PostgreSQL is a popular open-source database management system that runs on all major operating systems, including Ubuntu.

In this article, we'll guide you through the installation of PostgreSQL on Ubuntu using the command shell.

Installation

1. Update Ubuntu's package list:

sudo apt-get update

2. Install PostgreSQL:

sudo apt-get install postgresql postgresql-contrib

3. Verify that the installation was successful by checking the version number:

psql --version

Basic Usage

Logging in to PostgreSQL

You can log in to PostgreSQL as the default postgres user by using the following command:

sudo -i -u postgres

This will allow you to access the PostgreSQL prompt, where you can execute SQL queries and manage databases.

Creating a Database

To create a new database, use the createdb command:

createdb mydatabase

This will create a new database named mydatabase.

Creating a User

To create a new user, use the createuser command:

createuser myuser

This will create a new user named myuser.

Granting Access

To grant a user access to a database, use the GRANT command:

GRANT ALL PRIVILEGES ON DATABASE mydatabase TO myuser;

This will grant the myuser user all privileges to the mydatabase database.

Conclusion

In this article, we introduced you to PostgreSQL and showed you how to install it on Ubuntu using the command shell. We also explained how to create a database and a user, and how to grant access to a user. With the knowledge gained from this article, you should be able to start using PostgreSQL for your projects.