LINUX - List only the device names of all available network interfaces

I want to get a list of all available Network-Device Names on my Linux server. I figured that

netstat -a

would do the job, however netstat produces quite much output:

eth0      Link encap:Ethernet  Hardware Adresse 08:00:27:fc:5c:98  
          inet Adresse:192.168.2.222  Bcast:192.168.2.255  Maske:255.255.255.0
          inet6-Adresse: fe80::a00:27ff:fefc:5c98/64 Gültigkeitsbereich:Verbindung
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metrik:1
          RX packets:329 errors:0 dropped:0 overruns:0 frame:0
          TX packets:177 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:1000 
          RX bytes:41496 (40.5 KiB)  TX bytes:32503 (31.7 KiB)

eth1      Link encap:Ethernet  Hardware Adresse 08:00:27:e9:35:7d  
          [...]

eth2      Link encap:Ethernet  Hardware Adresse 08:00:27:ff:db:fe  
          [...]

lo        Link encap:Lokale Schleife  
          [...]

What I want to achieve is a list like

eth0
eth1
eth2
lo

or even better just

eth0
eth1
eth2

I assume that this can be done by a combination of "cat", "sed" and "grep", but I have simply no clue of how to strip the uneccessary information.

Thanks in advance

This question and answers originated from www.superuser.com
Question by (10/25/2010 8:41:03 PM)

Answer

Give this a try:

ifconfig -a | sed 's/[ \t].*//;/^$/d'

This will omit lo:

ifconfig -a | sed 's/[ \t].*//;/^\(lo\|\)$/d'
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Related Topics  linux  networking  sed  grep  cat
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