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Did Miscrosoft change how it dates files?



 
 
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  #16  
Old March 13th 19, 12:11 AM posted to alt.windows7.general
pyotr filipivich
external usenet poster
 
Posts: 752
Default Did Miscrosoft change how it dates files?

Stan Brown on Mon, 11 Mar 2019 12:05:59
-0400 typed in alt.windows7.general the following:
On Sun, 10 Mar 2019 22:23:09 -0700, pyotr filipivich wrote:

Greetings

I have a batch file using Robocopy which is only suppose to copy
those files which are "newer" (I.e., modified) than the ones on the
drive. Usually, there is no problem. But tonight, as I go to close
up operations for the evening, it is copying far more files than
before. all tagged "newer".
Was there something magical about the shift to Daylight Savings
time which makes a source drive file dated "Jan 2 2019 10:20 AM" to
now be "newer" than the target drive file dated "Jan 2 2019 10:20
AM"?


If you use the /TS option, robocopy will show you the timestamps of
the source file.


That it does.

Even as it updates all the files on thumbdrive G: from Thumbdrive
F: - both FAT32.

Meh. Major issue is that, knowing this, I will know to sync
thumbdrives earlier in the day, in order to not have to wait a half
hour while it updates all the files.

Now the question comes to me: what about the files on the external
hard drives, which are NTFS?

When the source file is on an NTFS drive, that will
be in UTC, not your local time. (The timestamps displayed in File
Explorer are converted from the NTFS native UTC to your time zone.)


Sigh, one more place where the softies have gotten "clever."

In the words of Zorba: Clever people and Grocers; they weigh
everything.

--
pyotr filipivich
Next month's Panel: Graft - Boon or blessing?
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  #17  
Old March 13th 19, 12:11 AM posted to alt.windows7.general
pyotr filipivich
external usenet poster
 
Posts: 752
Default Did Miscrosoft change how it dates files?

Stan Brown on Mon, 11 Mar 2019 12:05:59
-0400 typed in alt.windows7.general the following:

Robocopy supposedly understands the semiannual daylight-time shift,
and doesn't copy files in such cases, but I don't know how it knows.
I just make sure that I have updated my USB stick the last thing
before going to bed the night before the shift, so that even if the
timestamps are wrong the file contents are correct.


I think that is what I did Saturday night. Yep - even ran it a
second time and all that had changed were the game files.

Looping Owner at Documents C-loop

-------------------------------------------------------------------------------
ROBOCOPY :: Robust File Copy for Windows
-------------------------------------------------------------------------------

Started : Sat Mar 09 22:21:45 2019

Source : Q:\Documents\
Dest = R:\Documents\

Files : *.*

Exc Files : desktop.ini

Options : *.* /NDL /TEE /S /COPYAT /PURGE /NP /XJ /R:1 /W:1

------------------------------------------------------------------------------

Newer 5851 Q:\Documents\My Games\Beyond the
Sword\CivilizationIV.ini
Newer 5851 Q:\Documents\My Games\Beyond the
Sword\CivilizationIV.ini.bak
Newer 306 Q:\Documents\My Games\Beyond the
Sword\Logs\init.log
Newer 7556 Q:\Documents\My Games\Beyond the
Sword\Logs\PythonErr2.log
Newer 0 Q:\Documents\My Games\Beyond the
Sword\Logs\resmgr.log
Newer 483 Q:\Documents\My Games\Beyond the
Sword\Logs\xml.log

[Snippage ]
New File 698748 Q:\Documents\My Games\Beyond the
Sword\Saves\single\Julius R302A AD-1714 ASB End.CivBeyondSwordSave
Newer 1.1 m Q:\Documents\My Games\Beyond the
Sword\Saves\WorldBuilder\WBQuickSave.CivBeyondSwor dWBSave

------------------------------------------------------------------------------

Total Copied Skipped Mismatch FAILED Extras
Dirs : 680 650 30 0 0 0
Files : 128 13 115 0 0 31
Bytes : 83.86 m 4.91 m 78.94 m 0 0 9.74 m
Times : 0:00:03 0:00:00 0:00:00 0:00:02


Speed : 5794775 Bytes/sec.
Speed : 331.579 MegaBytes/min.

Ended : Sat Mar 09 22:21:48 2019


This past weekend, after the time shift, out of hundreds of Eastern
Standard Time files on my USB stick, robocooy wanted to copy exactly
four. I don't know what made those different from the others, so I
don't know if robocopy does basically compensate for DST and just
failed with these four.

There is an option in robocopy to copy the timestamp of a file
without copying the file contents. You might want to use that, come
November.


As I have multiple backups, I can play with them till I either
runout or it is November.
--
pyotr filipivich
Next month's Panel: Graft - Boon or blessing?
 




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