Configurar la red de Linux Mint desde la consola

1. Al agregar el siguiente comando te arrojara toda la interfaz foja sin importar si esta conectada:

ifconfig -a

eth0      Link encap:Ethernet  HWaddr 00:11:25:29:3D:F6
inet addr:10.26.3.144  Bcast:10.26.3.255  Mask:255.255.255.0
inet6 addr: xxxx::xxx:xxxx:xxxx:xxxx/64 Scope:Link
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
RX packets:16328475 errors:0 dropped:0 overruns:0 frame:0
TX packets:11020911 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2262220726 (2.1 GiB)  TX bytes:1803853996 (1.6 GiB)
Interrupt:18

eth1      Link encap:Ethernet  HWaddr 00:11:25:29:3D:F7
BROADCAST MULTICAST  MTU:1500  Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
Interrupt:19

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:2634 errors:0 dropped:0 overruns:0 frame:0
TX packets:2634 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:3270519 (3.1 MiB)  TX bytes:3270519 (3.1 MiB)