Get substring from Computer Name in DOS prompt

Hi all,

Beside for the path problem i would also like to ask if there is any DOS command which can retrieve the substring from the computername. E.g. my computer name is ABC123 and I would like to get the first 3 chars (ABC) for further process. How can I achieve this? Thanks for help.

Best Regards,
K.H.

For example:

Code:

---

@echo off
:GetAbrv.bat - Type "getabrv /?" (without the quotes) for instructions.
 if (%1)==(?) goto Syntax
 if (%1)==(/?) goto Syntax
 goto Begin
:Syntax
 echo.
 echo    Name: GetAbrv.bat
 echo.
 echo  Purpose: Takes the first three characters of an environment variable
 echo          named "computername" and puts them in an environment variable
 echo          named "computerabrv".
 echo.
 echo  Syntax: GetAbrv [/?]
 echo.
 echo Requires: 1) MS-DOS 5.00-6.22 or Windows 95/98/Me,
 echo.
 echo          2) an existing environment variable named "computername"
 echo              containing at least three characters,
 echo.
 echo          3) the program CHOICE.EXE (anywhere in the PATH),
 echo.
 echo          4) and at least 17 bytes of free space in the environment
 echo              to hold the new environment variable "computerabrv".
 echo.
 goto End
:Begin
 if (%computername%)==() goto Error
 echo;;|choice/c:;%computername%; "set computerabrv=">~.bat
 call ~.bat
 echo set computerabrv=%%2%%3%%4>~.bat
 call ~ %computerabrv%
:Display
 echo computername=%computername%
 echo computerabrv=%computerabrv%
:Cleanup
 del ~.bat
 set cmdline=
 goto End
:Error
 echo.
 echo    Error: Environment variable "computername" does not exist.
 goto Syntax
:End

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