SICStus Prolog - Operating System Utilities Go to the first , previous , next , last section, table of contents . This package contains utilities for invoking services from the operating system. At the time of writing this documentation, these services are only available on UNIX platforms. Certain predicates described below take names of files or directories as arguments.
All fields are integers.
OldName is the name of an existing file or directory, which will be deleted. If the operation fails, an exception is raised. Var is the name of an environment variable, and Value is its value. Both are atoms. Can be used to enumerate all current environment variables.