X-Spam-Check-By: sourceware.org Message-ID: <465F55EE.8070409@cygwin.com> Date: Thu, 31 May 2007 19:10:38 -0400 From: "Larry Hall (Cygwin)" Reply-To: cygwin@cygwin.com User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.10) Gecko/20070308 Fedora/1.5.0.10-2.fc4.remi Thunderbird/1.5.0.10 Mnenhy/0.7.5.0 MIME-Version: 1.0 To: cygwin@cygwin.com, cygwin@cygwin.com Subject: Re: ssh session hangs while running cmd on remote server References: <10900723.post@talk.nabble.com> <465F2B22.5000502@cygwin.com> <20070531201428.GB21273@ednor.casa.cgf.cx> <465F2F94.503@cygwin.com> <20070531203100.GB21388@ednor.casa.cgf.cx> In-Reply-To: <20070531203100.GB21388@ednor.casa.cgf.cx> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Christopher Faylor wrote: > On Thu, May 31, 2007 at 04:27:00PM -0400, Larry Hall (Cygwin) wrote: >> Christopher Faylor wrote: >>> There seems to be some confusion about the CYGWIN tty setting. >>> >>> The only time it should have any effect is when there is a console involved. >>> In that scenario, what effectively happens is that CYGWIN opens up a pty >>> and pretends that the pty is a linux-like tty. >>> >>> Setting CYGWIN=tty for servers should be a no-op. Ditto, having it set >>> while operating under a pty or if there is no console associated with the >>> session. >>> >>> So, if setting CYGWIN=tty actually causes a problem in an ssh session >>> then that is probably a Cygwin bug. Until that problem has become evident >>> lets not assume that there is a problem. >>> >>> I don't mean to be picking on you Larry. You are not the only person >>> I've seen opine about CYGWIN=tty . I remain unconvinced that setting it >>> would present a problem other than the standard problem of running pure >>> Windows programs under a Cygwin pty. >> The confusion may come from me. ;-) >> >> So are you saying that all Cygwin services effectively use ptys? >> >> Rereading the original post, I note that KenLee only said 'cmd' was started >> once in the OpenSSH session. I also assumed he invoked 'ssh' from a >> console, which may make a difference if the answer to the above question >> is "no". But that assumption is unsubstantiated by the available >> information. ;-) > > If he ssh'ed to somewhere interactively then there is a pty involved on > the remote end where the program was being run so that's what would have > caused any problem, IMO, regardless of the CYGWIN tty setting on the > local end. In that scenario, since ssh is a cygwin program it shouldn't > care about the CYGWIN=tty setting one way or the other. Understood. Thanks. -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 216 Dalton Rd. (508) 893-9889 - FAX Holliston, MA 01746 _____________________________________________________________________ A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting annoying in email? -- 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/