The “ifconfig” command is used for displaying current network configuration details.
The ifconfig command also used to check the assigned IP address of an server.
stefin@pitcy-Inspiron-1525:~$ ifconfig
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:6214 errors:0 dropped:0 overruns:0 frame:0
TX packets:6214 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:671138 (671.1 KB) TX bytes:671138 (671.1 KB)
wlan0 Link encap:Ethernet HWaddr 00:22:69:5c:32:32
inet addr:192.168.0.13 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::222:69ff:fe5c:3232/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:129323 errors:0 dropped:0 overruns:0 frame:0
TX packets:139135 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:94271476 (94.2 MB) TX bytes:47689858 (47.6 MB)
We can check all network interfaces using command ifconfig -a
stefin@pitcy-Inspiron-1525:~$ ifconfig -a
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:6772 errors:0 dropped:0 overruns:0 frame:0
TX packets:6772 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:726108 (726.1 KB) TX bytes:726108 (726.1 KB)
wlan0 Link encap:Ethernet HWaddr 00:22:69:5c:32:32
inet addr:192.168.0.13 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::222:69ff:fe5c:3232/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:142335 errors:0 dropped:0 overruns:0 frame:0
TX packets:153325 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:98838334 (98.8 MB) TX bytes:56333178 (56.3 MB)
Enable / Disable an Interface
$ ifconfig eth0 down
$ ifconfig eth0 up
