Commercial software — Matlab, Cadence, and many others — for Linux is all installed in /usr/cots. Many of these packages require environment configuration to work. Look in /usr/sup/use for environment configuration files. If there is one for the commercial software package you want to run, invoke it with:
% use <scriptname>
Leave off the .cshrc or .sh on the end. Once you’ve run that configuration, you should be able to invoke the package by name and use it.
If there’s a commercial software package which you’d like, but you don’t see in /usr/cots, check to see if there’s a Tufts-wide license for it. If so, we can probably install it for you; send mail to firstname.lastname@example.org to request the package.