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Best way to extract MAC address from ifconfig's output?

Tags:

regex

linux

command-line-interface

What is the best way to extract the MAC address from ifconfig's output?

Sample output:

bash-3.00# ifconfig eth0         eth0      Link encap:Ethernet  HWaddr 1F:2E:19:10:3B:52               inet addr:127.0.0.66  Bcast:127.255.255.255  Mask:255.0.0.0               UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1           ....           ....

Should I use cut, AWK or anything else, and what are the merits and demerits of one method over the other.

like image 923
Aman Jain Avatar asked Oct 29 '08 05:10

Aman Jain

People also ask

Does ifconfig show MAC address?

On a Linux machine Open a terminal window. Type ifconfig at the command prompt. Your MAC address will be displayed beside the label HWaddr.

How do I find the MAC address of an interface?

Windows 10 (alternate method)Go to Start > Settings. Once the Settings page opens click on Network & Internet. Select Ethernet from the left hand side and select your Ethernet interface on the right hand side. The Mac address will be displayed next to Physical address and is a 12 character alpha numeric string.

How do I find the MAC address of a Linux machine?

UNIX or Linux devicesOpen a terminal. Type ifconfig -a and press Enter. -> HWaddr or ether or lladdr is the device's MAC address.

How can I get a list of all MAC addresses?

To see all the MAC addresses and their associated IP addresses, type “arp -a”. This command will list all the available MAC addresses in the system.

1 Answers

You can do a cat under /sys/class/ 

cat /sys/class/net/*/address

Specifically for eth0

cat /sys/class/net/eth0/address
like image 195
Michalis Avatar answered Oct 11 '22 22:10

Michalis
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