Debugger Variables

debug-specific variables are substantially different from those with special meaning for dbx. There are four types of debug variables, each with a distinct purpose:

• ``code'' variables; variables defined by the code being debugged (unadorned name): var

• ``system'' variables; variables that affect or modify some aspect of debug behaviour: %var

• ``user'' variables; generic debug internal variables defined by the user to store temporary values: $var

• environment variables are handled as a subset of user variables, and are defined by exporting them: export $var