Re: Why binary mode?

[Sven Severus <s dot severus at hima dot com>]

Thank you, Corinna.

Now I think I have a fundamental understandig problem:
I agree, that this behavior ist not to be expected in a binary 
mounted directory. I tested this for confirmation, according to 
your suggestion, and you are right.

But in a textmode mounted directory, 'echo peng >p.txt' creates
a 6 byte long file containing 'p' 'e' 'n' 'g' '\r' '\n'.
OK, exactly as expected. Now I thought, 'cat p.txt' would open 
this file for reading in textmode, according to the default rule.

This is, what I expect, after reading the Cygwin FAQ:
"When processing in text mode, [...] written to the file [...] 
you in fact get "Hello\r\n". Upon reading this combination, 
the \r is removed [...]".
Why is it in fact not removed when reading with cat?

Thanks for any response.

Best regards,
Sven



On Feb 22 11:29, Corinna Vinschen wrote:
> > $ mount
> > c:\cygwin\usr\X11R6\lib\X11\fonts on /usr/X11R6/lib/X11/fonts type system (binmode)
> > C:\cygwin\bin on /usr/bin type system (textmode)
> > C:\cygwin\lib on /usr/lib type system (textmode)
> > c:\cygwin\tmp on /tmp type system (binmode)
> > C:\cygwin on / type system (textmode)
>  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Your home is mounted textmode.
>
> > c: on /c type system (textmode)
> > $ pwd
> > /home/es_sv
> > $ echo peng >p.txt && CO=$(cat p.txt) && od -c <<<"$CO"
> > 0000000   p   e   n   g  \r  \n
> > 0000006
>
> Which explains this behaviour.  The tools are using the default mode,
> which is textmode in your case.  I suggest replacing all textmode
> mounts with binmode mounts.
>
>
> Corinna


--

Mit freundlichen Grüßen

Dipl. Inform. Sven Severus
Softwareentwicklung
----------------------------------------------------------
HIMA Paul Hildebrandt GmbH + CO KG
Abt: Entwicklung Software
Albert-Bassermann-Strasse 28
68782 Bruehl
Germany

Tel: +49 6202 709-289
Fax: +49 6202 709-299
E-Mail: s.severus@hima.com
Internet: www.hima.de


--

HIMA Paul Hildebrandt GmbH + Co KG, Postfach 12 61, 68777 Bruehl bei Mannheim
Kommanditgesellschaft, Sitz Bruehl, Deutschland - Registergericht Mannheim HRA 421017
Ust-ID: DE 144286400, St.Nr: 43038 00190

Persoenlich haftende Gesellschafterin Paul Hildebrandt Verwaltungsgesellschaft mbH, 
Sitz Bruehl, Deutschland - Registergericht Mannheim HRB 420588

Geschaeftsfuehrer: Dipl.-Betriebswirt Steffen Philipp, Dipl.-Kfm. Peter Swiczinsky




--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/