ComSpec environment value

[Tom Hanlin]

The CMD.EXE command processor is 32-bit. COMMAND.COM is 16-bit. The
16-bit command processor is the default for 16-bit applications, such
as DOS apps, for compatibility reasons. I think there's a registry
setting you can set to insist otherwise, under Windows 2000, at least.

Note that DOS environment variables are traditionally all-caps. Many
DOS programs won't even see a variable such as "ComSpec". The mixed
case is a hint that it's a Windows environment variable.

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Tom Hanlin
PowerBASIC Staff

My PBDOS program returns C:\WINNT\SYSTEM32\COMMAND.COM for
the following code.

UCASE$(ENVIRON$("COMSPEC")

even thought SET show the environment to be

ComSpec=C:\WINNT\system32\cmd.exe

Any idea why?

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