linux-kernel - Re: query related to serial console

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Message-ID: <20070118090935.GA32068@flint.arm.linux.org.uk>
Date:	Thu, 18 Jan 2007 09:09:35 +0000
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Seetharam Dharmosoth <seetharam_kernel@...oo.co.in>
Cc:	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org
Subject: Re: query related to serial console

On Thu, Jan 18, 2007 at 05:39:15AM +0000, Seetharam Dharmosoth wrote:
> I have one doubt in this regard.
> 1) once we connected to the serial console we don't
>    want to login into the shell.
>    (without login into the shell we want to fire the
>    sysrq command like b, r m, etc.)
> 
>  for this I am doing like 
>   grabing the serial console then
>   doing ctrl+]
>   so that getting 
>               telnet> 
> now i want to give command like b, m ,r etc.
> 
> but it is not accepting my commands until I do 
> telnet> send brk
> 
> can you please explain me why like this behavior ?

If it didn't require a break before hand, merely pressing 'b', 'm' or 'r'
would trigger the sysrq command, which would make it absolutely impossible
to login or type any normal command containing those characters.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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