linux-kernel - Re: [PATCH 10/17] Tools: hv: Gather ipv[4,6] gateway information

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Message-ID: <20120724165359.GA8409@aepfle.de>
Date:	Tue, 24 Jul 2012 18:53:59 +0200
From:	Olaf Hering <olaf@...fle.de>
To:	Stephen Hemminger <shemminger@...tta.com>
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, devel@...uxdriverproject.org,
	virtualization@...ts.osdl.org, apw@...onical.com,
	netdev@...r.kernel.org, ben@...adent.org.uk
Subject: Re: [PATCH 10/17] Tools: hv: Gather ipv[4,6] gateway information

On Tue, Jul 24, Stephen Hemminger wrote:

> On Tue, 24 Jul 2012 09:01:34 -0700
> "K. Y. Srinivasan" <kys@...rosoft.com> wrote:
> 
> > +	memset(cmd, 0, sizeof(cmd));
> > +	strcat(cmd, "/sbin/ip -f inet  route | grep -w ");
> > +	strcat(cmd, if_name);
> > +	strcat(cmd, " | awk '/default/ {print $3 }'");
> 
> 
> Much simpler method:
> 
> ip route show match 0/0

This also has the benefit that ip is not called with absolute path, now
that distros move binaries around.

Olaf
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