How To Install psfex on Ubuntu
Posted on April 1, 2023 (Last modified on May 20, 2023 )
2 minutes • 360 words
Introduction
In this tutorial we learn how to install psfex on Ubuntu.
What is psfex
psfex is:
Extract models of the Point Spread Function (PSF) from FITS images processed with SExtractor, and measures the quality of images. The generated PSF models can be used for model-fitting photometry or morphological analyses.
There are three methods to install psfex on Ubuntu. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install psfex Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install psfex using apt-get by running the following command:
sudo apt-get -y install psfex
Install psfex Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install psfex using apt by running the following command:
sudo apt -y install psfex
Install psfex 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 psfex using aptitude by running the following command:
sudo aptitude -y install psfex
How To Uninstall psfex on Ubuntu
To uninstall only the psfex package we can use the following command:
sudo apt-get remove psfex
Uninstall psfex And Its Dependencies
To uninstall psfex and its dependencies that are no longer needed by Ubuntu, we can use the command below:
sudo apt-get -y autoremove psfex
Remove psfex Configurations and Data
To remove psfex configuration and data from Ubuntu we can use the following command:
sudo apt-get -y purge psfex
Remove psfex configuration, data, and all of its dependencies
We can use the following command to remove psfex configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge psfex
Dependencies
psfex have the following dependencies:
References
Summary
In this tutorial we learn how to install psfex package on Ubuntu using different package management tools: apt, apt-get and aptitude.