how to Get and unpack the latest version of the GROMACS tarball in ubuntu

1. Open the terminal by pressing Ctrl + Alt + T.
2. Navigate to the directory where you want to download and extract the GROMACS tarball. For example, type cd ~/Downloads to go to the Downloads folder.
3. Download the latest version of the GROMACS tarball by typing the following command:

wget ftp://ftp.gromacs.org/pub/gromacs/gromacs-{version}.tar.gz

Replace {version} with the latest version number. You can check the latest version number on the GROMACS website.

For example, to download version 2021.3, type:

wget ftp://ftp.gromacs.org/pub/gromacs/gromacs-2021.3.tar.gz

4. Extract the tarball by typing the following command:

tar -xf gromacs-{version}.tar.gz

Replace {version} with the version number you downloaded in step 3.

For example, to extract version 2021.3, type:

tar -xf gromacs-2021.3.tar.gz

5. Navigate to the extracted directory by typing:

cd gromacs-{version}

Replace {version} with the version number you downloaded in step 3.

For example, to go to the directory for version 2021.3, type:

cd gromacs-2021.3

You can now continue with the installation process for GROMACS.