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danndp 06-03-2011 04:33 AM
obtaining the MAC of the interfaces
 
Hi,

I'm running this command, and seems not to work, following the command:

Quote:
for nic in `ls /sys/class/net | grep -v lo`; do echo ${nic}; udevinfo -a -p /class/net/{nic} | grep -i address; done
The output is the following:

Quote:
eth0
eth1
But the output should show something like this: (showing the MAC address)

Quote:
eth0
SYSFS{address}=="00:26:55:df:5d:ba"
eth1
SYSFS{address}=="00:26:55:df:5d:b9"
Am i missing something with the command?

Regards!

ButterflyMelissa 06-03-2011 04:39 AM
Yo!

Quote:
Am i missing something with the command?
yes...you're using the wrong command IMHO... :)

Use

Quote:
arp -a
to see the MAC of the nic's in the box...

Wellness

Thor

blue_print 06-03-2011 04:44 AM
Looks like, the for loop is not correct. Please use the following one, it will work.
Code:
for nic in `ls /sys/class/net | grep -v lo`; do echo ${nic}; udevinfo -a -p /sys/class/net/${nic}/address | grep -i address | grep -v looking | grep -v KERNEL; done

danndp 06-03-2011 04:46 AM
Quote:
yes...you're using the wrong command IMHO... :)
Well, i found the mistake =) the command should be like this:

Quote:
for nic in `ls /sys/class/net | grep -v lo`; do echo ${nic}; udevinfo -a -p /class/net/${nic} | grep -i address; done
As you can see, i missed a $ =)

Many thanks for your help

Regards!

danndp 06-03-2011 04:47 AM
Quote:
Originally Posted by blue_print (Post 4374922)
Looks like, the for loop is not correct. Please use the following one, it will work.
Code:
for nic in `ls /sys/class/net | grep -v lo`; do echo ${nic}; udevinfo -a -p /sys/class/net/${nic}/address | grep -i address | grep -v looking | grep -v KERNEL; done
THANKS blue print =)

ButterflyMelissa 06-03-2011 04:48 AM
Thanks!

I learned something here :D

THor

jschiwal 06-03-2011 04:54 AM
You could get the MAC address from the contents of the /sys/class/net/*/address file.


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