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The company that I am consulting for is installing a software patch and
someone asked to have the last used dates reset so they could tell what
objects in the patch have been used. I asked what difference it makes if it
has been used and the response was "the company requested it so figure out
how to do it".

Honestly, in my opinion, it is a stupid request and there is no valid reason
for it. I really didn't expect this much back and forth on this. I really
just expected a "no, you can't do it" and that would be the end of it. I am
truly sorry that I wasted people's time.

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Patrik
Sent: Thursday, April 21, 2022 5:32 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Reset last used date

Hello John,

Am 21.04.2022 um 03:34 schrieb John Yeung <gallium.arsenide@xxxxxxxxx>:

Doesn't make sense to me. The system records the last time the object was
used, period. :-) And you can't make it "null", because the last used date
naturally can't be older than the last change date.
But you absolutely can have an object which has a last change date, yet
has 0 days used and no last used date. We have loads of them on our system.

There is a difference between what is technically possible and what makes
sense from a human point of view. :-) I already guessed that these data is
mere metadata just being updated by the OS on certain occasions but not
checked for consistency.

(Same as with atime/mtime/ctime on Unix: You can set them to whatever you
want with touch(1), values are never checked for consistency, or logical

What goal do you want to achieve?
Clearly he wants the object to appear as though it has never been used.

Yes. But what is the higher goal? Something the OP might elaborate on.

It's not hard to imagine some situations where you'd want an object to
appear "pristine". I will grant that in most such cases, resetting the last
used date is probably a nice-to-have; and the presence of 0 days used should
be sufficient from a functionality standpoint.

Instead of doing guesswork, I'd prefer the OP to explain what he wants to
achieve. :-)

Maybe I'm right for asking about the "why", because the OP's initial
question "how to reset" still hasn't been answered with 100% confidence.

:wq! PoC

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