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Date: Thu, 8 Sep 2005 09:26:09 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: Cygwin Mailing List <cygwin AT cygwin DOT com>
Subject: Re: sftp "connection closed"
Message-ID: <20050908072609.GY5555@calimero.vinschen.de>
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On Sep  7 19:40, Jean-Sebastien Trottier wrote:
> Hi Jack,
> 
> On Wed, Sep 07, 2005 at 03:57:59PM -0700, Jack Offerman wrote:
> > On 9/7/05, Larry Hall <lh-no-personal-replies-please AT cygwin DOT com> wrote:
> > > At 12:33 PM 9/7/2005, you wrote:
> > > >When "ssh host" works but "sftp host" doesn't, where should I look?
> > > >
> > > >I appreciate your help.
> > > 
> > > I guess you could try starting the server with debugging turned on and
> > > see what you get from the logs there.  Results from that are usually
> > > more instructive.
> > 
> > 
> > It started working again after I changed /etc/passwd.
> > When I recreated the file by doing mkpasswd -l, I also
> > hand-editted something. That is the last part of the line,
> > the login shell. Originally it was bash, and I changed it
> > to tcsh. Being a tcsh fan all my life, I've always hated
> > when I had to type "tcsh" right after logging in on a ssh
> > session because the login shell is bash. When I did
> > mkpasswd, I thought it was a perfect time to change
> > my login shell to tcsh. And I was happy with the result:
> > tcsh running as a login shell.
> > 
> > With tcsh as a login shell, however, sftp didn't work.
> > With bash, it is working now. So I take it.
> 
> IIRC, sftp is picky about what the shell will print on its stdout when
> launched in non-interactive mode (this can be seen with $?prompt == 0 in
> tcsh)... If your .tcshrc or .login files print stuff out, you will most
> likely disrupt sftp's "handshaking"...
> 
> try running 'tcsh /bin/true' and see if anything comes up on your
> terminal and enclose the culprit pieces of your "dot-files" inside a if
> ($?prompt)

Good advice.  I'm using tcsh as login shell as well and I have no
problems to use it with sftp.  The described behaviour is a good
indication for noisy rc scripts, as you say.  Btw., scp has the
same problem and there's nothing the developers can and will do
about that.  IIRC, we had a similar discussion on this list a few
years ago.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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