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Date: Wed, 13 May 2009 12:53:19 -0700
From: Gary Johnson <garyjohn AT spocom DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: WMIC
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On 2009-05-13, Christian Franke wrote:
> Dave Korn wrote:
> >Bruno Galindro da Costa wrote:
> >  
> >>Christian,
> >>
> >>   It Works perfectly for both! Can you explain why that commands
> >>works and not only "wmic cpu list full"?
> >>    
> >
> >  
> 
> The wmic.exe file imports console functions like SetConsoleMode() and 
> SetConsoleScreenBufferSize() from kernel32.dll. I presume that wmic 
> performs some direct console I/O which conflicts with Cygwin's tty. This 
> can be prevented by redirecting the standard input. But then wmic 
> creates an empty file 'TempWmicBatchFile.bat' in current directory ...
> 
> 
> >>>The following works for me in Cygwin console (notty, tty, and mintty) on
> >>>XP:
> >>>
> >>>$ echo '' | wmic cpu list full
> >>>
> >>>or
> >>>
> >>>$ wmic cpu list full </dev/null
> >>>      
> >
> >  So, are some of you guys using a DOS console, and some using
> >rxvt/xterm/whatever gui console?
> >
> >  
> 
> There is no difference in this case. Wmic hangs in Windows console, 
> mintty, rxvt and xterm if run without redirection from a Cygwin shell.

FWIW, these symptoms appear to be the same ones that nickle
exhibits:  works fine when input is not from a tty or console, but
otherwise hangs after displaying its prompt.  I reported the problem
to the cygwin-ports-general list (nickle is a cygwinports package).
The reply from Yaakov was that he could reproduce the problem but
didn't have a solution and didn't have time to investigate much
further.  I looked briefly at the code, but didn't get very far and
haven't had time to look further either.

Regards,
Gary



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