When one downloads a VMARC'ed package, the downloaded file (let's call it 
FUBAR VMARC in honor of the ongoing US financial "crisis") ends up with 
the date and time the FUBAR VMARC file was created on your VM system. That 
makes it more difficult at a later date to download the same package and 
easily see if there are differences between the two files.  It wouldn't be 
too hard write a new EXEC to compare the VMARC LIST output from the two 
VMARC files, but it would be a tool required to check another tool 
(VMARC). 

Would it make sense to add new function to VMARC to provide capture of the 
date and time the FUBAR VMARC file was created (or last updated), and 
imbed that date and time within the VMARC file itself? 

With such a feature (perhaps via a new trailer record such as ":TLR" to 
complement the existing file ":CFF" header records), a new VMARC command 
(maybe called "RESTDATE"?) could be used to both confirm that the whole 
file had been downloaded (since the ":TLR" record would always be the last 
record) and be able to use DMSPLU to RESTore the DATE and time to that 
which had been saved in the ":TLR" record.

"RESTDATE" is just an example operand keyword - better suggestions would 
be most welcome. 

Obviously, RESTDATE (or whatever) would have to be backward compatible -- 
just reporting something like: No ":TLR" record present; the file was 
created before yyyymmdd, or the file was truncated during download. (Where 
yyyymmdd was the date and time that the new support was added).

Mike Walter 
Hewitt Associates 
Any opinions expressed herein are mine alone and do not necessarily 
represent the opinions or policies of Hewitt Associates.






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