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Date: Sat, 17 Feb 2001 09:12:20 +0100
From: Corinna Vinschen <cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 1.1.8-2 tcsh 6.10-1 inetutils-1.3.2-10 ( rshd + tcsh problem )
Message-ID: <20010217091220.C16740@cygbert.vinschen.de>
Mail-Followup-To: cygwin AT cygwin DOT com
References: <001b01c09873$3a16af00$e682edc1 AT deepsleep>
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In-Reply-To: <001b01c09873$3a16af00$e682edc1@deepsleep>; from dave@ook.demon.co.uk on Fri, Feb 16, 2001 at 11:50:21PM -0000

On Fri, Feb 16, 2001 at 11:50:21PM -0000, Mad Dave wrote:
> If I connect via the rsh daemon as a user who has a default shell of the
> tcsh, say by doing a command like 'rsh machine "echo hello"',  the server
> machines cpu usage jumps up to 100% and stays there for several minutes (it
> is tcsh that is eating up all the cpu time not the rshd).  I do have a
> fairly large number of scripts that get sourced from the .tcshrc file, but
> if I was to rlogin to the machine it returns a prompt practicaly instantly.
> Anyideas as to why this is happening ?  Or any solutions ( other than not
> using the rshd ) ?

No. The solution is in fact, don't use rshd but sshd. rshd is for
reasons often mentioned in this mailing list not able to change
the user context. That's a problem! Using ssh and sshd with RSA
key _is_ definitely the better way - not only for security reasons
(/usr/doc/Cygwin/openssh-2.3.0p1.README).

There is another way, though. Start inetd from the user account
which shall run rshd and the subshell. And don't forget to set
the user permissions then (/usr/doc/Cygwin/inetutils-1.3.2.README).

Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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