ifconfig
sudo lshw -C network

#recovery mode
robert@robert:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:25:22:ae:a0:71
          inet addr:192.168.1.4  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::225:22ff:feae:a071/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4508 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4822 errors:0 dropped:0 overruns:0 carrier:1
          collisions:0 txqueuelen:1000
          RX bytes:3519274 (3.5 MB)  TX bytes:730938 (730.9 KB)

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:65536  Metric:1
          RX packets:254 errors:0 dropped:0 overruns:0 frame:0
          TX packets:254 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:20724 (20.7 KB)  TX bytes:20724 (20.7 KB)

robert@robert:~$ sudo lshw -C network
  *-network
       description: Ethernet interface
       product: AR8152 v2.0 Fast Ethernet
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: c1
       serial: 00:25:22:ae:a0:71
       size: 100Mbit/s
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.1-NAPI duplex=full ip=192.168.1.4 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:28 memory:fcfc0000-fcffffff ioport:dc00(size=128)

#normal startup
robert@robert:~$ 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:65536  Metric:1
          RX packets:2595 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2595 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:199881 (199.8 KB)  TX bytes:199881 (199.8 KB)

robert@robert:~$ sudo lshw -C network
[sudo] password for robert:
  *-network DISABLED
       description: Ethernet interface
       product: AR8152 v2.0 Fast Ethernet
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:01:00.0
       logical name: eth0
       version: c1
       serial: 00:25:22:ae:a0:71
       capacity: 100Mbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.1-NAPI latency=0 link=no multicast=yes port=twisted pair
       resources: irq:17 memory:fcfc0000-fcffffff ioport:dc00(size=128)