Micro Focus Visual COBOL 2.3 Update 2 for Eclipse (Windows) > Programming > Data Access > File Handling > File Handling Examples > File Names > Example of external filename assignment

Example of external filename assignment

 select fd-name
     assign to external envvar.

In this example, envvar must be an environment variable. Before executing the program, you must issue a SET (Windows) or export (UNIX) command to relate envvar to the physical filename you want to use:

Windows:

set envvar=c:\test.dat

UNIX:

export envvar=/tmp/test.dat

At run-time, the filename fd-name is assigned to the file test.dat in the specified directory.