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xcopy alters the creation date of destination files copied but not 'copy'

When i used xcopy to copy files from one PC to another PC's
drive (which is mapped by the current PC), the destination
files/folders created will take the date stamp of the date
that this xcopy command is being done.

Windows command prompt's  "copy" command will retain
the date of the original source's files but I have lots of
subdirectories so 'copy' command is not practical.

What other ways I can do to do the subdir copying that
retains the source files/folder's date/time stamp?

if there's no other suggestions, I'll test out Windows Explorer
later
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sunhux
Asked:
sunhux
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5 Solutions
 
Daniel HelgenbergerCommented:
Consider using robocopy, MS's try to mimic rsync. Build in, fairly powerful:
robocopy /mir <source> <dest>

Open in new window

http://technet.microsoft.com/en-us/library/cc733145(v=ws.10).aspx
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Steven HarrisPresidentCommented:
+1 for robocopy

Robocopy <source> <destination> /mir /dcopy:t /L

/mir is for mirroring
/dcopt:t preserves timestamps

/L will list the actions so you can verify that it will run correctly.

Remove /L to do the actual copy.
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sunhuxAuthor Commented:
Thanks, managed to get a copy of Robocopy.


Just one last question:

What if I want Robocopy operation such that if Robocopy
detects that the destination file is newer, it will not over-write
(& not delete) the destination file/folder.  What qualifier to use?
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sunhuxAuthor Commented:
And one last query:
does /mir  only do the 'differential' copy ie if the
destination has a file of the same date, it will not
copy/overwrite.  In this way copying of the tens of
thousands of files can be completed faster
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Bill BachPresidentCommented:
I agree that RoboCopy is likely one of the best options.  However, sometimes you want to be able to "see" what is going on, or to have more specific control over the process.  Check out the Beyond Compare utility (www.beyondcompare.com) and see if it works for you.  It supports command-line execution, handles mirroring very easily, is SUPER-FAST, and (unlike RoboCopy) has a complete GUI interface that you can use, too.  

This GUI makes it a lot easier to see exactly what will be copied (and what won't).  Personally, I found this tool years ago and continue to use this tool for my development folders.  When I develop on one machine and need to transfer back to the server (or to my laptop when traveling), I can bring up both directory lists side-by-side, sync data in one direcvtion (or both), and know that I have full control over the process because I tell it which files to copy from the GUI interface.  

Of course, I also use the same tool for automated backups -- scheduling the command-line script on a Windows server and running it every day to back up critical data to a NAS and then later to an external USB HDD.
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Steven HarrisPresidentCommented:
@ sunhux

Thanks, managed to get a copy of Robocopy.

ROBOCOPY is a command line tool, no download needed...

Just one last question:
What if I want Robocopy operation such that if Robocopy
detects that the destination file is newer, it will not over-write
(& not delete) the destination file/folder.  What qualifier to use?

you are looking for the /XO syntax.

/XO - if destination file exists and is the same date or newer than the source - don’t bother to overwrite it.

Visit SS64.com for a full listing of ROBOCOPY commands.  There are so many variations you can create, the possibilities are almost endless.

ROBOCOPY
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Bill BachPresidentCommented:
Not germaine to the thread -- but Robocopy is only included as part of Vista and 2008 Server (and newer).  Users of Windows XP and Server 2003 would need to go out & find a download.
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