I need to get a random 16 character string from a txt file into a new txt file. The txt file looks like this:

---------- C:\FWID.TXT
"3"="USBSTOR\\Disk&Ven_Apple&Prod_iPod&Rev_1.62\\000A270018E6ED40&0"

And I need to get 000A270018E6ED40 which should always be located between the \ and the & (at least I hope so)! Right now it needs to be a DOS command, but if you have it in an easier way, feel free to post, I could switch later, but now PLEASE in DOS-commands.
I hope it`s not impossible, since it is necessary for ml_iPod!
Thanks anyway

Mh, you could also just cut off the characters before and after the string! This would actually be more helpful, since I need it for a second txt and in there the structure is different!

Untested:

FOR /F "tokens=6 delims=\^&" %a IN (FWID.TXT) DO @ECHO %a

Yes it works, but how can I output that to a txt file?

FOR /F "tokens=6 delims=\^&" %a IN (FWID.TXT) DO @ECHO %a >> file.txt

"Computer security." — Oxymoron

It works when I use it from cmd, but when I write it into my batch, it doesn't. So right now it looks like this:
REGEDIT /E c:\fwid.txt HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Disk\Enum
find /I "iPod" c:\fwid.txt > c:\apple.txt
del C:\fwid.txt
FOR /F "tokens=6 delims=\^&" %a IN (C:\apple.TXT) DO @ECHO %a >> C:\file.txt

@echo off
REGEDIT /E c:\fwid.txt HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Disk\Enum
find /I "iPod" c:\fwid.txt > c:\apple.txt
del C:\fwid.txt
FOR /F "tokens=6 delims=\^&" %%a IN (C:\apple.TXT) DO @ECHO %%a >> C:\file.txt

You must use double % signs in scripts.

"Computer security." — Oxymoron

Oh, I didn't know this thank you very much!
Now I have a second question, for the iPod Touch, the registry string is different, so the code from above doesn't work.The txt looks like that (without the first and last "):
"
---------- C:\FWID.TXT
"1"="USB\\\\Vid_05ac&Pid_1290\\\\5299c8e84b07acce79299f9a83ed8806cb3800a8""
What I need are the first 16 characters after the \\\\, so in this case 5299c8e84b07acce .
Is that possible?
Oh and it is not necessarily a 1290 it can also be a 1291 before the \\\\

@echo off
for /f "tokens=3 delims=\\\\" %%a in (file.txt) do (
  set _=%%a
)
for /f "tokens=*" %%a in ('echo %_%') do (
  set _=%_:~0,16%
)
echo %_%

"Computer security." — Oxymoron

Hm somehow it doesn't work, this is my code right now (I had to double the last couple %:
@echo off
REGEDIT /E c:\fwid.txt HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBAAPL\Enum
find /I "Vid_05ac" c:\fwid.txt > c:\apple.txt
del C:\fwid.txt
for /f "tokens=3 delims=\\\\" %%a in (C:\apple.txt) do (set _=%%a)
for /f "tokens=*" %%a in ('echo %%_%%') do (set _=%%_:~0,16%%)
echo %%_%%
Pause

There's no need to double those percent signs. What error are you getting? It worked fine for me.

I tested it using a text file containing this:

"1"="USB\\\\Vid_05ac&Pid_1290\\\\5299c8e84b07acce79299f9a83ed8806cb3800a8""

The output was 5299c8e84b07acce.

"Foolproof systems don't take into account the ingenuity of fools."

I didn't get anything! The txt is an empty line and then:
---------- C:\FWID.TXT
"1"="USB\\\\Vid_05ac&Pid_1290\\\\5299c8e84b07acce79299f9a83ed8806cb3800a8"

When I let it run it just exits!

Try this:

@echo off
for /f "tokens=3 delims=\\\\" %%a in (test.txt) do (
  set _=%%a
)
set _=%_:~0,16%
echo %_%

I'm not sure why I used a second FOR loop in that other post. This works for me just fine, when the text file contains:

::==Start of test.txt

---------- C:\FWID.TXT
"1"="USB\\\\Vid_05ac&Pid_1290\\\\5299c8e84b07acce79299f9a83ed8806cb3800a8"
::==EOF

"Computer security." — Oxymoron

Yeah this works great! Thank You very much! You helped ml_iPod a lot!