displaying all network interface card in linux.

fredie_barron · 03-31-2011, 04:32 AM

hello all,
i am new to redhat linux,how do i list all newly added network interface card.can someone kindly help me with this?

markush · 03-31-2011, 04:35 AM

Hello fredie barron, welcome to LQ,

Code:

lspci | grep -i ethernet

(executed as root) should do the job.

Markus

NM04 · 03-31-2011, 04:40 AM

i think -- ifconfig -a will do the job as well.

markush · 03-31-2011, 04:45 AM

Quote:

Originally Posted by NM04

i think -- ifconfig -a will do the job as well.

no, it will not since it shows only NICs which are up.

Markus

Didier Spaier · 03-31-2011, 05:05 AM

Quote:

Originally Posted by markush

no, it will not since it shows only NICs which are up.

Markus

No, it will show all NICS

markush · 03-31-2011, 05:17 AM

Quote:

Originally Posted by Didier Spaier

No, it will show all NICS

Code:

samsung:~# ifconfig 
wlan0     Link encap:Ethernet  HWaddr f0:7b:cb:2e:cd:3e  
          inet addr:192.168.178.26  Bcast:192.168.178.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:812 errors:0 dropped:0 overruns:0 frame:0
          TX packets:899 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:607146 (592.9 KiB)  TX bytes:135860 (132.6 KiB)

samsung:~#

this laptop has an ethernet-adapter as well

Code:

samsung:~# lspci | grep -i ethernet
04:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8040 PCI-E Fast Ethernet Controller
samsung:~#

But please note that I'm not really sure if this depends on the distribution.

Markus

Didier Spaier · 03-31-2011, 05:30 AM

The OP wanted to see the network interfaces, not the (PCI) network devices. Admittedly both commands are useful though, in order to match devices <-> interfaces

And 'ifconfig' shows all network interfaces - but only with the '-a' option.

Other than that, AFAIK both 'lspci' and 'ifconfig' commands are distribution-agnostics.

NM04 · 03-31-2011, 05:40 AM

markhush,
it seems you did only ifconfig and not ifconfig -a. try ifconfig -a-- this will show all the NIC's.
In fact both the commands will work for this thread.

markush · 03-31-2011, 06:16 AM

Well

,

I've to say sorry, you're both right, I didn't think about the "-a" option. Thanks for correcting me.

Markus

fredie_barron · 03-31-2011, 01:45 PM

thaks very much markush lspci | grep -i ethernet work find for me.