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1993-08-31
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OPSYS
-----
This little utility informs you about the running operating system. It is use-
full to detect, if you're running DOS in a OS/2 environment or MS-DOS itself.
I wrote this utility to handle the environment-settings in a common batch-file.
HOW TO RUN OPSYS:
-----------------
Just enter OPSYS (it runs under DOS as under OS/2) without any parameter. You
will see the information about the environment:
OPSYS Version 1.0
OS-Version: 20.10, Real mode
Assuming running DOS under OS/2
Exit: 1
This output has been generated in a MDOS-Box. The value of 'Exit' means the
errorlevel.
ERRORLEVELS:
------------
(The most important part of this utility...)
OS/2 Protected mode: 2
OS/2 MDOS-Session: 1
MS-DOS: 0
SAMPLE BATCH- / CMD- FILE:
--------------------------
@echo off
opsys
if errorlevel == 2 GOTO OS2
if errorlevel == 1 GOTO MDOS
if errorlevel == 0 GOTO MSDOS
:continue
goto end
:MSDOS
echo MS-DOS
goto continue
:MDOS
echo MDOS
goto continue
:OS2
echo OS/2 Protected
goto continue
:END
CREDITS:
--------
If you want to get in touch with me (feedback is always welcome...), you can
reach me at:
Markus Fehr, Haldenstrasse 9, CH-8302 Kloten
Internet: markus.fehr@mcmeier.active.ch OR
100034,2525@compuserve.com
CompuServe: 100034,2525
Have fun! :-))