Working directory and temporary directory
Except for absolute path names, file or path name expansion are relative to the current working directory. By default this reference location corresponds to the operating system current working directory which usually is the directory from which Mosel has been started. Since the working directory is an execution parameter, a model may be running with a current working directory which might be different from the one used by the operating system. It is therefore recommended to use absolute file names when a Mosel model communicates with an external component (for instance when a file name is part of the DSN to be used for an ODBC connection).
In addition to the current working directory, Mosel creates a temporary directory that is shared by all models for storing temporary data handled as physical files. This directory is located in the system temporary directory as specified by one of the environment variables TMP, TEMP or USERPROFILE under Windows and TMPDIR on Posix systems. If none of these environment variables is defined, the default base directory will be "C:\" on Windows and "/tmp" on Posix systems. The Mosel temporary directory is automatically created when needed and deleted at program termination.
The path names of the working directory and the temporary directory are identified respectively by the "workdir" and "tmpdir" control parameters and can be retrieved using the getparam function. It is possible to change the current working directory of a running model by updating the "workdir" parameter using setparam.
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