Hello all,

I have a tower with 12 usb drives to duplicate usb sticks.
I try to write a batch file that will allow me to copy files from a folder to the usb sticks.
To write the batch file with the xcopy command to make him only copy is simple, but i want to make a compare copy that every time that he copy the files form the folder, he will make copy and compare of the files and give me a log if everything is ok or it there is a problem with one of the drives and whice one(if it possible).
Any one can help me with that one please?
Or maybe give me some explantion how to do it(maybe a website that explain me a little bit more how to do it).

Thank you very much

Phoenixtb

You should use "FC" to compare the content of two files, and act according to what ERRORLEVEL is throwing as a result of each compare.

You may need to break down the XCOPY command, and use a FOR loop, for every file you copy (and subsequently FileCompare against each other).

If you are XCOPYing subdirectories (as compared to files IN a folder), this will become more difficult.

Actually, XCOPY should have a feature to test the copied file.

Hmm ... have a check on ROBOCOPY, the expansion to XCOPY. Or, check out XXCOPY (the non MS-expansion to XCOPY).

Hi there.

I will check the robocopy and xxcopy.

Thank you very much for the information :)

Phoenixtb

No need for 3rd party utility.

Use XCOPY with /v to verify files written.

To make a log:

xcopy /v *.* u:\ > log

=====================================
If at first you don't succeed, you're about average.

M2

:: compare files in 2 dirs and report any missing

@echo off
setLocal EnableDelayedExpansion

for /f "tokens=* delims= " %%a in ('dir/b/a-d') do (
if exist C:\temp\-\matrix\x\%%a (
fc %%a C:\temp\-\matrix\x\%%a >> compare.log
) else (
echo %%a is missing >> missing.log
)
)

=====================================
If at first you don't succeed, you're about average.

M2

Wow,
Thanks a lot for all the information.
I never tought that i get the information that quick :).

Thank you everyone for the really really quick help :)

Phoenixtb

I seem to remember in the "good old days" of MS-DOS 6, there was a native command (or possibly a supplied .exe), I think it was called UPDATE or something like that, and it did what M2's batch file above is doing. There were command-line options to copy files if the destination didn't exist, or if it was older than the source. How come there isn't such a command on XP?

"How come there isn't such a command on XP?"

There is:

xcopy /?

=====================================
If at first you don't succeed, you're about average.

M2

All I could find with xcopy /? was:

/U Copies only files that already exist in destination.

I can't find an option for copying only if source is newer than destination, or only if destination file does not exist. (Which is like what your for loop in the previous reply is doing, and what the UPDATE command could do without requiring a for loop.)

Oh, I've just looked at an MS-DOS 6 Command Reference and found the command I was thinking of. It wasn't called UPDATE, it was called REPLACE. Now that I know the correct name, I can see that REPLACE also exists in Windows XP. All that moaning for nothing...

Now I can go back to my old batch files, and replace silly for loops like

for %%f in (source\*) do if not exist dest\* copy %%f dest

with

replace /a source\* dest

xcopy /d

/D:m-d-y Copies files changed on or after the specified date.
If no date is given, copies only those files whose
source time is newer than the destination time.

=====================================
If at first you don't succeed, you're about average.

M2

Didn't see that at first. Thanks.

There is any way to make the compare script to read all the files and folders without loop? or i need to build a very long script to make compare to a lot of files and folders?

or is there any way that when i write the fc command to tell him to check every folder and files?

Phoenixtb