Linux - ifconfig (Interface Configuration)


ifconfig is the equivalent of ipconfig in DOS where you can configure network interface.

Without parameters, it gives you the list of interface with their corresponding IP.



apt-get install -y net-tools


Below you can see two interfaces :

  • eth0 : an ethernet interface with the IP
  • lo : the loopback interface with the IP
[root@oel11g ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0C:29:79:3E:8C  
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::20c:29ff:fe79:3e8c/64 Scope:Link
          RX packets:71800 errors:0 dropped:0 overruns:0 frame:0
          TX packets:9218 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:16185577 (15.4 MiB)  TX bytes:1167946 (1.1 MiB)
          Interrupt:59 Base address:0x2000 

lo        Link encap:Local Loopback  
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:4770 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4770 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:6175911 (5.8 MiB)  TX bytes:6175911 (5.8 MiB)

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