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Number   :  4343
Date     :  2003-04-18
Author   :  Garry Deane
Subject  :  Re: Sync two folders problem
Size(KB) :  2


--- In xxcopy@yahoogroups.com, "profasaurus"  wrote:
> Taking this to the next step (for a true folder sync),
> what way would you suggest to copy all files between
> folders (the source to dest and the dest to source),
> but delete all identical filenames/size in the dest
> folder, that were manually deleted (no longer exist)
> in the source folder?

No offence but I really think you're wasting you're time trying to 
set up other than a very simplistic synchronisation using Xxcopy. If 
you work in a linear fashion i.e. work on PC1 and synchronise changes 
to PC2 then work on PC2 and synchronise changes back to PC1, you've 
got a reasonable chance but otherwise, you're going to get into 
strife.

Without in any way endorsing the following software, take a look at 
this link to get a feel for the sort of scenarios that might need to 
be addressed in anything beyond a rudimentary one-way synchronisation 
http://www.easy2sync.de/en/produkte/easy2sync_bsp.php.
To try to handle these sorts of issues with Xxcopy would become very 
complex and necessarily would mean making a number of assumptions 
about how to handle certain situations. You'd be much better off 
spending a couple of $100 on buying some specialised software.

Having said that, here's how you might go about the specific task you 
asked for help on. Since the only practical way to keep track of 
deleted files is to use a zero file length reference directory, you 
can't check whether the size of a deleted file is identical in the 
destination directory - there's nothing to compare against. But that 
doesn't matter because the timestamp must necessarily indicate 
whether the file has changed so you don't delete files in the 
destination unless the timestamp of the old file in the reference 
directory is the same.

@echo off
set src=d:\test\
set ref=d:\ref\
set dst=f:\test\
set log=%temp%\xxdel.log
if not exist %ref% goto :initialise
:: Clear the archive bit for all files in ref
xxcopy %ref% /s /az > nul
:: Set the archive bit in ref excluding any that exist in src
xxcopy %ref% %src% /bu /bb /aa > nul
:: Delete files in dst where the ref file has the archive bit
:: set and the timestamps match
xxcopy %ref% %dst% /bu /rdy /a /ds /pd0 /of3 /fmdtl /on%log%
if not errorlevel 1 goto :initialise
if errorlevel 100 if not errorlevel 101 goto :initialise
echo An error occurred during deletion of files in %dest%
echo The reference directory %ref% has not been updated.
echo Check the error log file %log%
goto :eof
:initialise
echo Updating reference directory.
xxcopy %src% %ref% /bu /tr0 /x*.tmp > nul
:eof



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