If you are downloading from the Solutions Download Center, download the _linux64.zip file and follow these steps:
To copy the application to the intended folder root privileges are required. Please extract the content of the zip to /opt/, e.g. with:
sudo unzip MSC.Software-Apex-GenDes-2021-2-Linux.zip 'MSC.Software/*'
Then the startscript must be made executable:
sudo chmod 755 /opt/MSC.Software/MSC_Apex_Generative_Design/2021-825738/runGD_Engine.sh
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.