Paul Mc Auley wrote:
> Is there an "official" way of testing the link status of an ethernet
> device?
>> If, for instance eth0 is unplugged I can type (as root) mii-tool and get
> back, eth0: no link
>> If there a way to do that as a non-root user short of writing a wrapper?
> Also the man page for mii-tool says:
> "This program is obsolete. Valid media are only 100baseT4, 100baseTx-
> FD,100baseTx-HD, 10baseT-FD and 10baseT-HD ethernet cards. For
> replacement check ethtool."
>> Which is fine, only I can't find a way of making ethtool do what I want.
> What's the story on this?
> Paul
sudo ethtool eth0 | grep -qF "Link detected: yes" && echo connected || echo disconnected
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