$ ifconfig -a
enp2s1 Link encap:Ethernet HWaddr 00:1b:38:fc:e0:8e
UP 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)
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:1224 errors:0 dropped:0 overruns:0 frame:0
TX packets:1224 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:104372 (104.3 KB) TX bytes:104372 (104.3 KB)
wlp1s0 Link encap:Ethernet HWaddr 00:1f:3a:37:59:b6
UP 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)
wwp0s29f7u3i4 Link encap:Ethernet HWaddr 9e:8b:c8:25:9d:8d
inet addr:10.99.127.146 Bcast:10.99.127.147 Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2628 errors:0 dropped:0 overruns:0 frame:0
TX packets:2463 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1930404 (1.9 MB) TX bytes:201791 (201.7 KB)
$ sudo ifconfig down wlp1s0
[sudo] password for pavlushka:
wlp1s0: Unknown host
ifconfig: `--help' gives usage information.