Re: nic + detecting the presence of a carrier

["Tod Merley" <todbot88 gmail com>]

On 8/31/06, Gregory Machin <gregory machin gmail com> wrote:
> Is there not a value in /proc i can get ??
>
>
> On 8/31/06, Frank Elsner <Elsner zrz tu-berlin de> wrote:
> > 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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> > fedora-list redhat com
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> https://www.redhat.com/mailman/listinfo/fedora-list
> >
>
>
>
> --
> Gregory Machin
> gregory machin gmail com
> www.linuxpro.co.za
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> fedora-list redhat com
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Hi  Gregory Machin!

You might find this interesting (note: email wrap will probably mess
up the display, I needed to put my terminal to full screen to properly
see it):

tod tod-desktop:~/Desktop$ cat /proc/net/dev
Inter-|   Receive                                                |  Transmit
face |bytes    packets errs drop fifo frame compressed
multicast|bytes    packets errs drop fifo colls carrier compressed
   lo:     832      13    0    0    0     0          0         0
832      13    0    0    0     0       0          0
 eth0:  862723    2467    0    0    0     0          0         0
614738    2224    0    0    0     0       0          0
 sit0:       0       0    0    0    0     0          0         0
 0       0    0    0    0     0       0          0
tod tod-desktop:~/Desktop$

Good hunting!

Tod