GOTM, or General Ocean Turbulence Model, is a numerical simulation tool for turbulent experiments in one of the fastest language-- Fortran. And, apparently, it's free and open-source. This article will show you how to install it and run your first case in GOTM. Take fedora as an example, firstly, you need to figure out the dependency like below:
sudo dnf install pangox-compat
Then, since Cisco requires valid account to download the AnyConnect on their website, you may download through my google drive.Then move to the folder where you downloaded it, and
tar -zxvf anyconnect.tar.gz
cd anyconnect/anyconnect-linux64-4.5.05030/vpn
sudo ./vpn_install
Following several simple instructions, you will see AnyConnect in your softwares. Although it is not the latest version, it will update automatically as long as you run it.