O equivalente Ubuntu / Linux de ipconfig no Windows é ifconfig .
Tente digitar sudo ifconfig .
O resultado será algo parecido com isto:
eth0 Link encap:Ethernet HWaddr 00:0c:29:94:37:b6
inet addr:192.168.1.231 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe94:37b6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:519374 errors:0 dropped:0 overruns:0 frame:0
TX packets:110611 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:332864737 (332.8 MB) TX bytes:11113451 (11.1 MB)
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:33651 errors:0 dropped:0 overruns:0 frame:0
TX packets:33651 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2951078 (2.9 MB) TX bytes:2951078 (2.9 MB)