Re: nic + detecting the presence of a carrier

From: Frank Elsner <Elsner@xxxxxxxxxxxxxxxx>
Date: Thu, 31 Aug 2006 12:22:03 +0200

On Thu, 31 Aug 2006 12:04:12 +0200 Gregory Machin wrote:

Hi.
I need to write a script the can restart services based on where a cable is
plugged into a nic or not ..
How do I get the status of the carrier on the nic ...

The output of "ethtool ethX" contains the line

Link detected: yes

and the output of "mii-tool ethX" shows

eth0: negotiated 100baseTx-FD, link ok

which both should be usable for your purpose.

--Frank Elsner

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