EXISTS

Name

exists

Purpose (one Line)

Check for file (or directory) existence.

Description

File I/o

Calling Sequence

flag = exists(file)

Inputs

file - string containing file name to look for.

Optional Input Parameters

Keyword Parameters

Outputs

Return value is 1 (true) if file exists. 0 if it doesn't.

Common Blocks

Side Effects

Restrictions

Procedure

Modification History

93/03/29 - Written by Marc W. Buie, Lowell Observatory
96/10/17, MWB, modified to use OPENR for Unix
97/02/16, MWB, fixed DOS bug for dirs with trailing \
99/06/11, MWB, Dave Osip, added clause for Macintosh computers.
99/11/14, MWB, restructured code
2000/10/9, Roger J. Dejus (ANL), changed code for Unix to accomodate
changed system response in IDL v5.3 and later.
2004/9/21, MWB, removed obsolete call to Findfile