GNU Rush – a restricted user shell (split by node):   Section:   Chapter:FastBack: Configuration File   Up: Request   FastForward: Default Configuration   Contents: Table of ContentsIndex: Concept Index User-defined variables

In addition to the built-in variables, arbitrary variables can be defined and used in the configuration file. These user-defined variables are defined using the set statement (see set) and are normally used to pass information between rules. They are invisible to whatever command rush executes as the final result of processing.