[CentOS] GRabbing MAC address

Jerry Geis wrote:
> I am trying to grab the mac address for eth0 on centos 5.1 with
> 
> ifconfig | grep eth0 | cut -d ' ' -f 5 and I dont get anything.
> 
> What am I not doing right?
> 
> ifconfig | grep eth0 | cut -d ' ' -f 1 gives me eth0 but anything else 
> like -f 2, -f 3 etc
> I get nothing.
> 

If sed had been invented first, we wouldn't need grep.

ifconfig |sed -n -e 's/eth0.*\(..:..:..:..:..:..\)/\1/p'

-- 
   Les Mikesell
    lesmikesell at gmail.com