How To Install postgresql-q3c on Ubuntu 18.04

In this tutorial we learn how to install postgresql-q3c on Ubuntu 18.04. postgresql-q3c is PostgreSQL extension used for indexing the sky

Introduction

In this tutorial we learn how to install postgresql-q3c on Ubuntu 18.04.

What is postgresql-q3c

postgresql-q3c is:

Q3C, an extension for PostgreSQL, is designed for the work with large astronomical catalogues or any catalogs of objects on the sphere.

This extension allows a user to perform fast circular, elliptical or polygonal searches on the sky as well as fast cross-matches.

There are three methods to install postgresql-q3c on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install postgresql-q3c Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install postgresql-q3c using apt-get by running the following command:

sudo apt-get -y install postgresql-q3c

Install postgresql-q3c Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install postgresql-q3c using apt by running the following command:

sudo apt -y install postgresql-q3c

Install postgresql-q3c Using aptitude

If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install postgresql-q3c using aptitude by running the following command:

sudo aptitude -y install postgresql-q3c

How To Uninstall postgresql-q3c on Ubuntu 18.04

To uninstall only the postgresql-q3c package we can use the following command:

sudo apt-get remove postgresql-q3c

Uninstall postgresql-q3c And Its Dependencies

To uninstall postgresql-q3c and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:

sudo apt-get -y autoremove postgresql-q3c

Remove postgresql-q3c Configurations and Data

To remove postgresql-q3c configuration and data from Ubuntu 18.04 we can use the following command:

sudo apt-get -y purge postgresql-q3c

Remove postgresql-q3c configuration, data, and all of its dependencies

We can use the following command to remove postgresql-q3c configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge postgresql-q3c

References

Summary

In this tutorial we learn how to install postgresql-q3c package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.