輸入ifconfig
root@localhost ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.18 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::20c:29ff:fec0:cd5a prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:c0:cd:5a txqueuelen 1000 (Ethernet)
RX packets 263728 bytes 378939837 (361.3 MiB)
RX errors 0 dropped 3 overruns 0 frame 0
TX packets 140985 bytes 8786382 (8.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 0 (Local Loopback)
RX packets 16888 bytes 1438004 (1.3 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 16888 bytes 1438004 (1.3 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 00:00:00:00:00:00 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
virbr0-nic: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 52:54:00:fe:a6:53 txqueuelen 500 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eno16777736 這個名字就是網絡連接，其它的干什麼的暫時還不知道。
ifup eno16777736 連接網絡
ifdown eno16777736 關閉網絡
圖形界面就在這裡開關。
