I'm writing a Batch file that copies a 695 meg file from the CD to the C: drive (checks to see if the entire file actually coppied) then prompts the user to unsert the next CD to copy the next file. The only trouble I'm having is how to (Check to see if the entire file actually coppied)... I need something in the batch file that compares the size of two files, and if they are the same, then it exits with errorlevel=0, and if not, errorlevel=1. I greatly appriciate any help anyone can give me on this!! Thank's in advance, 1Tech

@echo off
:main
fc c:\filename r:\filemame > nul
if errorlevel 1 goto error

:next
echo insert next CD
pause
goto main

:error
echo failed check

M2

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

oops,

I assume they're binary, so:

fc /b c:\filename r:\filemame

M2

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

I thank you for your effort Mechanix2Go. I tried the FC command with and without the binary switch /b and it never goes to error, allways goes to next, even when the file that I told it to copy does not exist on the R: (CD) drive. This is a 695 meg file it is comparing though. I get the feeling from the HELP FC listing that this command looks at both files line by line and not just their file sizes. I'm stumped. Any ideas?

Hi,

I'm a little bit at a disadvantage here because I'm running NT. I have 9x and 6x, but don't want to reboot right now.

I would HOPE that the /b does not simply do a size check, but actually compares byte for byte.

I just altered a small test file by adding a space.

Here's the out put:

::===============
C:\temp\->fc /b t.bat t2
Comparing files T.BAT and T2
FC: T2 longer than T.BAT
::================

So if it's only comparing size, that's pretty dumb.

I altered it again so they are the same SIZE, but different.

Here's the output:

::============
0000004D: 66 69
0000004E: 69 6C
0000004F: 6C 65
00000050: 65 20
::=============
Which means it actually compares bytes, but [weird] sets errorlevel 0!

You could use VERIFY, which is supposed to ensure that a file is written correctly. Not obvious is what happens if it is NOT.

If you want to stick to plain w98, I'm out of suggestions for the moment.

If you can use 3rd party utils, life gets easier.

M2

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

Hello all....newbie here...trying to build a simple batch file that could ping my computers and write to a file things like IP address, mac address...thanks

Hi Chris,

As that is a new subject, you need to start a new thread.

If it's not DOS, it doesn't belong here.

Best place for batch / script issues is the programming forum.

When you get there you need to be specific about your OS and about the requirement.

HTH

M2

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