  DIRECTORY/SINCE=NOBACKUP? 
 The Question is:
 
How can I use the DIRECTORY command to list only the files on a disk which have
 no backup date recorded?  Is this a gotcha?
 
 The Answer is:
 
  DCL lexical functions such as f$file_attributes and a simple loop
  through the directory, most likely.
 
  Alternatively:
 
    $ pipe direct/nohead/notrai/width=filename=50/date=backup | -
        search sys$input "&lt;no backup recorded&gt;"
 
