If you are running a Linux version with a graphical desktop environment, you might find a COMSOL Multiphysics icon that you can simply click to start COMSOL in the menus. Alternatively, using a terminal window, you can run the comsol command. If it is not available, ask your system manager to make it available to you, or, if you have administrative privileges on your Linux system, add the comsol command to the search path. The setup can do this automatically for you during installation if you run it with root privileges. The comsol command is located in the bin folder in the COMSOL installation directory. This is a typical example of a command that adds comsol to the search path is (assuming you are logged in as root):