How to install fftw2 On Ubuntu 16.04 Lts? Uninstall and remove fftw2 Package

Quick installation of fftw2:

Step 1: Update system:

sudo apt-get update

Step 2: Install: fftw2

Ater updaing the OS run following command to install the packae:

sudo apt-get install fftw2

How to install fftw2 on Ubuntu 16.04?

First of all update your system with the command:

sudo apt-get update

Above command will download the package lists for Ubuntu 16.04 on your system. This will update the list of newest versions of packages and its dependencies on your system.

After downloading the latest package list with the help of above you can run the installation process.

If fftw2 is not installed on your compter then the command 'dpkg -L fftw2' will give followin error.

deepak@deepakub16:~$ dpkg -L fftw2
dpkg-query: package 'fftw2' is not installed
Use dpkg --info (= dpkg-deb --info) to examine archive files,
and dpkg --contents (= dpkg-deb --contents) to list their contents.
deepak@deepakub16:~$ 

Installing fftw2:

After system update use the following command to install fftw2:

sudo apt-get install fftw2

Above command will confirm before installing the package on your Ubuntu 16.04 Operating System. If you are not already logged in as su, installer will ask you the root password. After completion of the installation you can use the package on your system.

How to uninstall/remove fftw2 from Ubuntu 16.04?

Now we will see the commands for uninstalling the fftw2 from Ubuntu 16.04. For uninstalling this package you can easily use the apt command and remove the package from Linux Operating System.

To remove the fftw2 following command is used:

sudo apt-get remove  fftw2

Following command is used to remove the fftw2 package along with its dependencies:

sudo apt-get remove --auto-remove fftw2

This will remove fftw2 and all its dependent packages which is no longer needed in the system.

Completely removing fftw2 with all configuration files:

Following command should be used with care as it deletes all the configuration files and data:

sudo apt-get purge fftw2

or you can use following command also:

sudo apt-get purge --auto-remove fftw2

Above command will remove all the configuration files and data associated with fftw2 package. You can can't recover the delete data, so, use this command with care.