[CentOS] 6.x - find interface with link up

[Les Mikesell]

On Thu, Dec 15, 2011 at 2:56 PM,  <m.roth at 5-cent.us> wrote:
> Les Mikesell wrote:
>> In earlier versions 'mii-tool' would iterate over interfaces and show
>> which have link up.   In 6.x it wants an interface as a parameter.
>> What is the appropriate way to find which of some number of of
>> interfaces are connected?   Better yet, what is the least typing to
>> get the mac addresses of those interfaces?
>
> ethtool, or even lshw.
>

How do you make ethtool iterate over the available interfaces?

-- 
  Les Mikesell
    lesmikesell at gmail.com