How To Install libint1 on Ubuntu 18.04
Introduction
In this tutorial we learn how to install libint1 on Ubuntu 18.04.
What is libint1
libint1 is:
The LIBINT library is used to evaluate the traditional (electron repulsion) and certain novel two-body matrix elements (integrals) over Cartesian Gaussian functions used in modern atomic and molecular theory. The idea of the library is to let computer write optimized code for computing such integrals. There are two primary advantages to this: much less human effort is required to write code for computing new integrals, and code can be optimized specifically for a particular computer architecture (e.g., vector processor).
LIBINT has been utilized to implement methods such as Hartree-Fock (HF) and Kohn-Sham density functional theory (KS DFT), second-order Moeller-Plesset perturbation theory (MP2), coupled cluster singles and doubles (CCSD) method, as well as explicitly correlated R12 methods.
This package contains the shared library.
There are three methods to install libint1 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 libint1 Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libint1 using apt-get by running the following command:
sudo apt-get -y install libint1
Install libint1 Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libint1 using apt by running the following command:
sudo apt -y install libint1
Install libint1 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 libint1 using aptitude by running the following command:
sudo aptitude -y install libint1
How To Uninstall libint1 on Ubuntu 18.04
To uninstall only the libint1 package we can use the following command:
sudo apt-get remove libint1
Uninstall libint1 And Its Dependencies
To uninstall libint1 and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove libint1
Remove libint1 Configurations and Data
To remove libint1 configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge libint1
Remove libint1 configuration, data, and all of its dependencies
We can use the following command to remove libint1 configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libint1
References
Summary
In this tutorial we learn how to install libint1 package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
