From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752494Ab2G1LId (ORCPT ); Sat, 28 Jul 2012 07:08:33 -0400 Received: from alice.et.bocholt.fh-gelsenkirchen.de ([193.175.197.63]:37592 "EHLO alice.et.bocholt.fh-gelsenkirchen.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752427Ab2G1LIb (ORCPT ); Sat, 28 Jul 2012 07:08:31 -0400 X-DKIM: Sendmail DKIM Filter v2.8.3 alice.et.bocholt.fh-gelsenkirchen.de q6SB8J18006902 From: Dirk Gouders To: Borislav Petkov Cc: Cong Wang , Jesse Barnes , Linux Kernel Subject: Re: [RFC PATCH] netconsole.txt: "nc" needs "-p" to specify the listening port In-Reply-To: <20120727131535.GA3485@x1.osrc.amd.com> (Borislav Petkov's message of "Fri, 27 Jul 2012 15:15:36 +0200") References: <20120727131535.GA3485@x1.osrc.amd.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.4 (gnu/linux) Date: Sat, 28 Jul 2012 13:08:16 +0200 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Greylist: Sender succeeded STARTTLS authentication, not delayed by milter-greylist-4.2.3 (alice.et.bocholt.fh-gelsenkirchen.de [192.168.0.63]); Sat, 28 Jul 2012 13:08:20 +0200 (CEST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Borislav Petkov writes: > On Fri, Jul 27, 2012 at 11:24:53AM +0200, Dirk Gouders wrote: >> Cong Wang writes: >> >> > On Fri, Jul 27, 2012 at 2:35 PM, Dirk Gouders >> > wrote: >> >> Hi Jesse, >> >> >> >> I would like to ask you to check if the documentation of "nc" in >> >> netconsole.txt is still correct. I tried two different netcat packages >> >> and both require "-p" to specify the listening port. I am wondering if >> >> that changed after the use of "nc" has been documented. >> > >> > On Fedora 16, `nc -u -l ` works fine. >> >> Thanks for checking that. >> >> If the information I found is correct, Fedora uses OpenBSD's nc >> codebase. The two netcat packages I tested on a Gentoo system differ in >> requiring the -p switch for the port specification. > > So say exactly that in the doc: that the *BSD's version of nc doesn't > need the port number specified with '-p' and you're covered. OK, I tried that in the attached patch. I'm not sure if every exeption needs to/should be documented, though. Dirk >>From 3cdeac3e814471053129145c5fa8391acb365fd8 Mon Sep 17 00:00:00 2001 From: Dirk Gouders Date: Sat, 28 Jul 2012 12:32:49 +0200 Subject: [PATCH] netconsole.txt: non-BSD versions of nc(1) require '-p' switch Gentoo for example uses non-BSD versions of nc(1) which require the '-p' switch to specify the listening port. --- Documentation/networking/netconsole.txt | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/Documentation/networking/netconsole.txt b/Documentation/networking/netconsole.txt index 8d02207..9a362f8 100644 --- a/Documentation/networking/netconsole.txt +++ b/Documentation/networking/netconsole.txt @@ -52,7 +52,8 @@ initialized and attempts to bring up the supplied dev at the supplied address. The remote host can run either 'netcat -u -l -p ', -'nc -l -u ' or syslogd. +'nc -l -u ' (BSD version of nc(1) e.g. Fedora), +'nc -l -u -p ' or syslogd. Dynamic reconfiguration: ======================== -- 1.7.8.6