# Install PostgreSQL
## Overview and generalities
* By default every Postgres installation comes with one database already created called "postgres"
* This is important because Postgres requires you to specify the name of the database to make a connection, so there needs to always be one database
* [Postgres Downloads URL](https://www.postgresql.org/download/)
## Linux Debian
* Install Packages
```bash
sudo apt update && sudo apt install postgresql postgresql-contrib
```
* Once the installation is complete, the PostgreSQL service will start. To verify the installation, use the `psql` tool to print the server version
```bash
sudo -u postgres psql -c "SELECT version();"
```
{% hint style="info" %}
Output should look like:
```bash
PostgreSQL 11.5 (Debian 11.5-1+deb10u1) on x86_64-pc-linux-gnu,
compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit
```
{% endhint %}
## Windows
* Download installer from the [Postgres Downloads URL](https://www.postgresql.org/download/)
* Follow the Wizard like any other app
* Select path where you want installed (Usually left default)
* Select additional components to be installed
* Pass in the password for the superuser
* Pass in the Database Port (Default: 5432)
* Click next on the rest and this will start the install
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