Checks for the existence of a file. This function does not support wildcard specifications. Returns true if any file system entity with the given name exists. In particular, this will return true for both regular files and directories.
Parameters:
filename
The name of the file to check for the existence of.
Returns:
0
The file does not exist.
1
The file exists.
Example 8.9. RexxUtil - SysFileexists
if SysFileExists(InputFile) then say "File Exists!"
else say "File does not exist."
