Path: utzoo!utgpu!water!watmath!clyde!rutgers!cmcl2!brl-adm!umd5!ames!pasteur!ucbvax!UOFT02.BITNET!ERIC
From: ERIC@UOFT02.BITNET (Eric)
Newsgroups: comp.os.vms
Subject: Re: Printing file age via DCL
Message-ID: <8802201628.AA18272@ucbvax.Berkeley.EDU>
Date: 15 Feb 88 19:01:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 23

In-Reply-To:  your letter rec'd 14-FEB-1988 14:38

From:   IN%"INFO-VAX@KL.SRI.COM" 14-FEB-1988 14:38
To:     Eric Rostetter <ERIC@UOFT02>
Subj:   Printing file age via DCL

> I have a simple problem nobody here seems to be able to solve (we're fairly
> new to VMS) which is, how to display a file's age via DCL.  I can get
> the revision date and time via F$FILE_ATTRIBUTES, but how do I subtract this
> (which is a character string) from the current date and time (another string)
> and end up with something meaningful (such as DELTA time format)?  I can't
> see how to do it via F$CVTIME though I tried F$CVTIME(-RDT) and all it gave
> me was midnight of today.  I can't believe this would be difficult in DCL
> but it sure isn't obvious to me!

The following is not what you asked for, but maybe it will help you anyway.
It types a file if the file has been changed within the last three  days...
To change the period of time,   simply change the constant date/time (delta
format) in the first line (currently 03-00:00).   Maybe you can modify this
to do what you want...  Then again, maybe not...

Eric Rostetter
Eric @ uoft02.bitnet