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SAS Functions and CALL Routines under Windows

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 Language Reference: Dictionary





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 directories existence.  [cautionend]


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

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