Re: [CentOS] GRabbing MAC address

On Thu, 2008-02-28 at 08:51 -0500, Toby Bluhm 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.

Jerry

There's multiple spaces in the output that cut is hitting - use tr to reduce them.

ifconfig | grep eth0 | tr -s ' ' ' ' | cut -d ' ' -f 5

/sbin/ifconfig | grep eth0 | awk '{ print $5 }'

for the lazy way or "man gawk" to see how to select and print and skip lines of no interest, eliminating the grep.

HTH