28 Feb
2008
28 Feb
'08
11:03 p.m.
On Thu, Feb 28, 2008 at 08:13:17AM -0600, Les Mikesell wrote:
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@gmail.com
Specifying eth0 as ifconfig parameter also would be better once there is eth0:0, eth0:1, etc. Otherwise multiple lines would be returned.
Wojtek