Linux - ifconfig (Interface Configuration)

About

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.

Articles Related

Management

Installation

apt-get install -y net-tools

Example

Below you can see two interfaces :

eth0 : an ethernet interface with the IP 192.168.96.232
lo : the loopback interface with the IP 127.0.0.1

[root@oel11g ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0C:29:79:3E:8C  
          inet addr:192.168.96.232  Bcast:192.168.97.255  Mask:255.255.254.0
          inet6 addr: fe80::20c:29ff:fe79:3e8c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          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:127.0.0.1  Mask:255.0.0.0
          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)

Documentation / Reference

ifconfig