Important Changes to the Unix Interactive Cluster

The Unix interactive cluster ( will soon be retired. These long-running Solaris systems will be replaced by new Linux systems, which will run concurrently for a brief transition period. Starting May 2, 2016, IMSS will make changes to users' dot files to minimize compatibility issues with the new Linux systems. Changes will be completed over a period of approximately one week and are detailed at

For questions about this transition or assistance with modifying your dot files, please contact the Help Desk (x3500, help@caltech.edu