If you are downloading from the Solutions Download Center, download the _linux64.bin file and follow these steps:
Copy the self-extracting archive (.bin) file to a temporary subdirectory with enough disk space.
Double-click on the installer and follow the prompts.
The Command Line Optimisation is the only option available for Linux. This allows you to prepare the models on a different computer and run the solver on a different computer than you have the MSC Apex Generative Design graphical user interface installed on.