Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm 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 Reply-To: Cygwin List Message-Id: <6.1.0.6.0.20040806122058.033978a0@pop.prospeed.net> X-Sender: Date: Fri, 06 Aug 2004 12:21:41 -0400 To: "David E. Meier" , "Cygwin List" From: Larry Hall Subject: Re: Redirect stdout from SSH In-Reply-To: <4377.217.162.71.141.1091808058.squirrel@217.162.71.141> References: <1614.217.162.71.141.1091552632.squirrel@217.162.71.141> <6.1.0.6.0.20040803172459.0338a528@pop.prospeed.net> <3552.217.162.71.141.1091799815.squirrel@217.162.71.141> <6.1.0.6.0.20040806105531.033469a0@pop.prospeed.net> <4377.217.162.71.141.1091808058.squirrel@217.162.71.141> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" At 12:00 PM 8/6/2004, you wrote: >OK, short overview: I am working on a program in C# that needs to run some >commands on a remote machine and therefore I use SSH. The output will then >be written into a textbox. In C# you can run a command like this: > >Process MyProcess = new Process(); >ProcessStartInfo psi = new ProcessStartInfo(); >psi.FileName = @"c:\cygwin\bin\ls"; >psi.Arguments = "-al"; >psi.UseShellExecute = false; >psi.RedirectStandardError = true; >psi.RedirectStandardOutput = true; >psi.CreateNoWindow = true; >MyProcess.StartInfo = psi; >MyProcess.Start(); >+ textbox handling stuff. > >This command will run 'ls' without creating the Command Window and outputs >the the listing of the direcotry as expected in the textbox. Now, when I >want to invoke SSH in the same manner, setting these values: > >psi.FileName = @"c:\cygwin\bin\ssh"; >psi.Arguments = "-i /path/to/key user@host ls -al"; > >then I have to explicitly set > >psi.RedirectStandardInput = true; > >or else it won't work. Although I see the command executing by observing >some network action there is nothing returned to the textbox and CPU stays >at 100%. There is nothing that needs to be written to stdin such as a >passphrase or so. However, programs using SSH, such as rsync, don't need >to set RedirectStandardInput = true to write their output to the textbox. >I just wonder what's the difference. That I can't say. -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 838 Washington Street (508) 893-9889 - FAX Holliston, MA 01746 -- 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/