To dynamically change your path if you rem to a different machine. When butler places a free workstation in the butler pool, it identifies the workstation with its system type. Users of rem can us a switch of the form -systemtype to ask for machines of a certain type. By default, rem asks for a machine of the same system type as the machine on which rem is running. The build program defines a variable named SYS which contains the system type for the current machine.
Batch files are shell scripts that are run at a time and date specified by the user.
The two program used to run batch files are cron , which is primarily for use only by the system itself or system administrators, and at , which is for users. In general, batch files cannot be run on Andrew. At is generally not useful, either, because there is no provision for providing a password to at , which means that the job cannot be authenticated to the Andrew File System.