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Number   :  3437
Date     :  2003-01-04
Author   :  Kan Yabumoto
Subject  :  Re: directory compare
Size(KB) :  3



Neil:

You are basically at the right track. As to the time-zone adjustments,
the /TS- and /TD+ (or /TS+ and /TD-) are to select the same files
where the difference is that /TD+ would throw away the adjustment
and the newly saved file will inherit the unadjusted source file
whereas the /TS- would keep the adjusted value.

Anyway, to select those pair of files that are exactly one hour
apart and you want to treat them differently, I suggest that
you create a reference directory (either with a full set of
actual files or to save time, use a "skeleton" directory where
only the directory info is kept and saved as zero-length file).
Such a reference directory will be handy from time to time to
be used as a reference (not very straightforward but can be used).

One way (out of may possible ways) to create such a directory is

batch1.bat
--------------------------------------------------------------
xxcopy c:\charlie\ /az/s // clear archive bit from all files
xxoopy c:\charlie\ d:\delta\ /aa/bs/s/h/td+1 // set A-bit
xxcopy c:\charlie\ /ldzl/s/h/a // list files with A-bit
xxcopy c:\charlie\ /ldzl/s/h/axa // list files without A-bit
---------------------------------------------------------------

Here, the 2nd line is the one which select files which are
identical between in the source and destination directories
if you make the one-hour timestamp adjustment. The /BS
checks that both the filesize *AND* timestamp (after the adjustment)
are exactly the same between the one in the source and the one in
the destination.

Note here, the /BS is exact opposite to the /BI. The /BS
selects (and /AA will put the A-bit to the source file)
whereas /BI skips the files that are identical. Both methods
are useful. The 3rd and 4th lines above show exactly opposite
sets of files (/A is equivalent to /ATA --- selects file with A-bit
which is opposite of /AXA --- selects files without A-bit)

If you want to remove these files (the one with exactly one hour
timestamp difference with matching filesize), just do the
following command

xxcopy c:\charlie\ d:\delta2\ /s/h/a

Once you set the A-bit to the exact file set you can then do
whatever you want with the /A switch.

Kan Yabumoto
================================================================

At 2003-01-03 14:11, you wrote:
>Hello, Can someone please help...
>
>I have two deeply nested directories C:\Charlie and D:\Delta which I
>want to compare and I think XXcopy can do the job.
>
>I'm having problems understanding the section in XXCOPY TECHNICAL
>BULLETIN #01 entitled "Summary XXCOPY switches that check two
>directories:"
>
>95%+ of the files in the directories are identical (size&time) with a
>possible exception of a time difference of EXACTLY one hour (I moved
>between timezones or copied in summertime or something).
>
>Specifically what I want to know is the differences between the two
>directories, i.e.
>1) files which exist on (either) one but not the other
>and
>2) files which have a different size or timestamp (unless it is
>different by exactly one hour - PLUS or MINUS)
>
>I get the impression that multiple variations on something
>like "xxcopy /L /S /BI /TD+1 C:\Charlie D:\Delta"
>would do the trick but it seems to be a bit more involved.
>
>Can someone please tell me which incantation(s) of xxcopy will give
>me what I want.
>
>Thanks for any help given.
>
>Neil.
>
>
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/



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