FILEEXIST Function: Windows

Verifies the existence of an external file by its physical name.
Category: External Files
Windows specifics: filename can be assigned with an environment variable
See: FILEEXIST Function in SAS Functions and CALL Routines: Reference



Required Argument

specifies a fully qualified physical filename of the external file. In a DATA step, filename can be a character expression, a string in quotation marks, or a DATA step variable. In a macro, filename can be any expression.
Under Windows, filename can also be an environment variable. The filename or environment variable that you specify must be enclosed in quotation marks.
Note: The FILEEXIST function can also verify a directory’s existence.


FILEEXIST returns 1 if the external file exists and 0 if the external file does not exist.