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

[Ross Walker]

On Dec 15, 2011, at 3:45 PM, Les Mikesell <lesmikesell at gmail.com> 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?

In 5 an 'ifconfig' without parameters would only list up interfaces and one would have to do an 'ifconfig -a' to see all interfaces. Maybe still true in 6?

-Ross