x_haraldsen%use.uio.uninett@TOR.NTA.NO (Tore Haraldsen USE/UiO) (04/30/87)
>From: "John H. Yates" <YATES%a.chem.upenn.edu@cis.upenn.edu> >Posted-Date: Mon, 27 Apr 87 22:08 EST >X-Vms-To: INFOVAX,YATES > Is there any way to retrieve the last accessed date for files? I know >last revised is available, but haven't found if RMS keeps the last >time a file was simply read. > I at one time considered archiving user files that had not been accessed >in n days, but gave up when the hook did not seem to exist. > I know it would slow down i/o and for this reason may not be available, >and yes, I know users could easily beat the archive system, by copying >their files to nl: , etc. , but what they don't know will help me free up >disk space. You can get last-accessed-date by setting retention on the disk volume (see System Manager Ref. Manual): $ SET VOLUME volnam/RETENTION=(min[,max]) where min and max specifies the minimum and maximum retention times to be used by the file system to determine the expiration date for files on the volume. When a file is created on the volume, the expiration date is initially set to current time + max. Each time the file is accessed, the current time is added to the min time, and if this sum is greater than the exp- iration date, a new expiration date is computed. If you omit the max value, a default value that is the smaller of (2 x min) or (min + 7) days is used. For exmple, /Retention= 3- is the same as /Retention=(3-,6-), while /Retention=10- is the same as /Retention= (10-,17-). The above is quoted from $ HELP SET VOLUME /RETENTION. It works.