SAS(R) 9.1.3 Companion for z/OS

Details
FILEEXIST Function
Functions and CALL Routines under z/OS FILENAME Function 259
FEXIST returns 1 if the external file that is associated with fileref exists, and 0 if the
file does not exist.
Verifies the existence of an external file by its physical name
Category: External Files
z/OS specifics: filename
See: FILEEXIST Function in SAS Language Reference: Dictionary
Syntax
FILEEXIST(filename)
filename
specifies a physical filename of an 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 UNIX System Services, filename can specify a path.
Details
FILENAME Function
FILEEXIST returns 1 if the external file that is associated with fileref exists, and 0 if
the file does not exist.
Assigns or deassigns a fileref for an external file, a directory, or an output device
Category: External Files
z/OS specifics: host options, devices
See: FILENAME Function in SAS Language Reference: Dictionary
Syntax
FILENAME(‘fileref’,filename)
fileref
in a DATA step, specifies the fileref to assign to an external file. In a macro (for
example, in the %SYSFUNC function), fileref is the name of a macro variable
(without an ampersand) whose value contains the fileref to assign to the external file.